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DOE OSTI2020

Materials Data on Sr(HO)2 by Materials Project

Sr(OH)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Sr2+ is bonded in a 7-coordinate geometry to one H1+ and six O2- atoms. The Sr–H bond length is 2.54 Å. There are a spread of Sr–O bond distances ranging from 2.54–2.66 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one Sr2+ and one O2- atom. The H–O bond length is 0.98 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to three equivalent Sr2+ and one H1+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to three equivalent Sr2+ and one H1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrH4O3 by Materials Project

Sr(OH)2H2O crystallizes in the orthorhombic Pmc2_1 space group. The structure is two-dimensional and consists of one Sr(OH)2H2O sheet oriented in the (0, 1, 0) direction. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.63–2.71 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the third H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.02 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to two equivalent Sr2+ and two equivalent H1+ atoms. In the second O2- site, O2- is bonded in a single-bond geometry to four equivalent Sr2+ and one H1+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one H1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the monoclinic Cc space group. The structure is two-dimensional and consists of two Sr(H8O5)2 sheets oriented in the (0, 0, 1) direction. Sr is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.64–2.68 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the second H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the third H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the fifth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.60 Å) H–O bond length. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the seventh H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.65 Å) H–O bond length. In the eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the ninth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eleventh H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.64 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the thirteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.64 Å) H–O bond length. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifteenth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.69 Å) H–O bond length. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 5-coordinate geometry to four H and one O atom. The O–O bond length is 1.50 Å. In the second O site, O is bonded in a 5-coordinate geometry to four H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the monoclinic Pc space group. The structure is two-dimensional and consists of two Sr(H8O5)2 sheets oriented in the (0, 0, 1) direction. Sr is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.64–2.68 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the second H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.60 Å) H–O bond length. In the third H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.64 Å) H–O bond length. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the fifth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.58 Å) H–O bond length. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the seventh H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.65 Å) H–O bond length. In the eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the ninth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.65 Å) H–O bond length. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eleventh H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.67 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the thirteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.64 Å) H–O bond length. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the fifteenth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.69 Å) H–O bond length. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 5-coordinate geometry to four H and one O atom. The O–O bond length is 1.50 Å. In the second O site, O is bonded in a 5-coordinate geometry to four H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the monoclinic Cc space group. The structure is two-dimensional and consists of two Sr(H8O5)2 sheets oriented in the (0, 0, 1) direction. Sr is bonded in a 2-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.49–2.80 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.68 Å) H–O bond length. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the third H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.70 Å) H–O bond length. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the sixth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.59 Å) H–O bond length. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the eighth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.58 Å) H–O bond length. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the tenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.61 Å) H–O bond length. In the eleventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the thirteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.65 Å) H–O bond length. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fifteenth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.62 Å) H–O bond length. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 5-coordinate geometry to four H and one O atom. The O–O bond length is 1.50 Å. In the second O site, O is bonded in a 4-coordinate geometry to three H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H2O3)2 by Materials Project

Sr(H2O3)2 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. Sr is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Sr–O bond distances ranging from 2.57–2.89 Å. There are four inequivalent H sites. In the first H site, H is bonded in a bent 150 degrees geometry to two O atoms. There is one shorter (1.07 Å) and one longer (1.46 Å) H–O bond length. In the second H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.05 Å) and one longer (1.52 Å) H–O bond length. In the third H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.55 Å) H–O bond length. In the fourth H site, H is bonded in a distorted bent 150 degrees geometry to two O atoms. There is one shorter (1.06 Å) and one longer (1.50 Å) H–O bond length. There are six inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to two equivalent Sr and one H atom. In the second O site, O is bonded in a single-bond geometry to two equivalent Sr and one H atom. In the third O site, O is bonded in a single-bond geometry to two equivalent Sr and one H atom. In the fourth O site, O is bonded in a single-bond geometry to one Sr and one H atom. In the fifth O site, O is bonded in a 2-coordinate geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a distorted bent 120 degrees geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of one Sr(H8O5)2 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Sr sites. In the first Sr site, Sr is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.54–2.78 Å. In the second Sr site, Sr is bonded in a 8-coordinate geometry to one H and seven O atoms. The Sr–H bond length is 2.60 Å. There are a spread of Sr–O bond distances ranging from 2.56–2.71 Å. There are thirty-two inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the second H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.55 Å) H–O bond length. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the fourth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.65 Å) H–O bond length. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the sixth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.59 Å) H–O bond length. In the seventh H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.59 Å) H–O bond length. In the eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the ninth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eleventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the twelfth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.78 Å) H–O bond length. In the thirteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the fifteenth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.71 Å) H–O bond length. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the seventeenth H site, H is bonded in a distorted single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eighteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the nineteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the twentieth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the twenty-first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the twenty-second H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.06 Å) and one longer (1.46 Å) H–O bond length. In the twenty-third H site, H is bonded in a distorted bent 150 degrees geometry to two O atoms. There is one shorter (1.06 Å) and one longer (1.48 Å) H–O bond length. In the twenty-fourth H site, H is bonded in a single-bond geometry to one Sr and one O atom. The H–O bond length is 0.99 Å. In the twenty-fifth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.58 Å) H–O bond length. In the twenty-sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the twenty-seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the twenty-eighth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.68 Å) H–O bond length. In the twenty-ninth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the thirtieth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the thirty-first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the thirty-second H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.59 Å) H–O bond length. There are twenty inequivalent O sites. In the first O site, O is bonded in a distorted trigonal pyramidal geometry to three H and one O atom. The O–O bond length is 1.50 Å. In the second O site, O is bonded in a 2-coordinate geometry to four H and one O atom. The O–O bond length is 1.48 Å. In the third O site, O is bonded in a distorted single-bond geometry to one H and one O atom. In the fourth O site, O is bonded in a 5-coordinate geometry to four H and one O atom. In the fifth O site, O is bonded in a bent 120 degrees geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eleventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the twelfth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the thirteenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourteenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifteenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixteenth O site, O is bonded in a distorted tetrahedral geometry to four H atoms. In the seventeenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighteenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the nineteenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the twentieth O site, O is bonded in a water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of two Sr(H8O5)2 sheets oriented in the (0, 0, 1) direction. In one of the Sr(H8O5)2 sheets, Sr is bonded in a 10-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.54–2.72 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the second H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.67 Å) H–O bond length. In the third H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.67 Å) H–O bond length. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.60 Å) H–O bond length. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the seventh H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.61 Å) H–O bond length. In the eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the ninth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.61 Å) H–O bond length. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the eleventh H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.59 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the thirteenth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.71 Å) H–O bond length. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the sixteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.64 Å) H–O bond length. There are ten inequivalent O sites. In the first O site, O is bonded in a 5-coordinate geometry to four H and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a 5-coordinate geometry to four H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a distorted bent 120 degrees geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In one of the Sr(H8O5)2 sheets, Sr is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.57–2.73 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.06 Å) and one longer (1.52 Å) H–O bond length. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the fourth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.05 Å) and one longer (1.54 Å) H–O bond length. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the seventh H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.05 Å) and one longer (1.50 Å) H–O bond length. In the eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the tenth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.59 Å) H–O bond length. In the eleventh H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.69 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the thirteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifteenth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.65 Å) H–O bond length. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 4-coordinate geometry to three H and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a 5-coordinate geometry to four H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the triclinic P1 space group. The structure is three-dimensional. Sr is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.58–2.79 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the third H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.53 Å) H–O bond length. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the sixth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.05 Å) and one longer (1.48 Å) H–O bond length. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the ninth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.62 Å) H–O bond length. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the eleventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the twelfth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.60 Å) H–O bond length. In the thirteenth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.54 Å) H–O bond length. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a distorted L-shaped geometry to two H and one O atom. The O–O bond length is 1.51 Å. In the second O site, O is bonded in a 4-coordinate geometry to three H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the monoclinic C2/c space group. The structure is two-dimensional and consists of two Sr(H8O5)2 sheets oriented in the (0, 0, 1) direction. Sr is bonded in a body-centered cubic geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.61–2.67 Å. There are eight inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the second H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.68 Å) H–O bond length. In the third H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.69 Å) H–O bond length. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.70 Å) H–O bond length. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the eighth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.66 Å) H–O bond length. There are five inequivalent O sites. In the first O site, O is bonded in a 5-coordinate geometry to four H and one O atom. The O–O bond length is 1.51 Å. In the second O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a distorted bent 120 degrees geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. Sr is bonded in a 7-coordinate geometry to one H and seven O atoms. The Sr–H bond length is 2.70 Å. There are a spread of Sr–O bond distances ranging from 2.53–2.63 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.70 Å) H–O bond length. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fourth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.65 Å) H–O bond length. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the sixth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.64 Å) H–O bond length. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the eighth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.06 Å) and one longer (1.51 Å) H–O bond length. In the ninth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.62 Å) H–O bond length. In the tenth H site, H is bonded in a single-bond geometry to one Sr and one O atom. The H–O bond length is 0.99 Å. In the eleventh H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.12 Å) and one longer (1.34 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the thirteenth H site, H is bonded in a distorted single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 4-coordinate geometry to three H and one O atom. The O–O bond length is 1.48 Å. In the second O site, O is bonded in a single-bond geometry to one H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a 2-coordinate geometry to four H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of two Sr(H8O5)2 sheets oriented in the (0, 0, 1) direction. In one of the Sr(H8O5)2 sheets, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.56–2.71 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.77 Å) H–O bond length. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fourth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.60 Å) H–O bond length. In the fifth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.66 Å) H–O bond length. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the eighth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.57 Å) H–O bond length. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the tenth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.05 Å) and one longer (1.53 Å) H–O bond length. In the eleventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the thirteenth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the sixteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. There are ten inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to four H and one O atom. The O–O bond length is 1.50 Å. In the second O site, O is bonded in a 4-coordinate geometry to three H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In one of the Sr(H8O5)2 sheets, Sr is bonded in a 8-coordinate geometry to one H and eight O atoms. The Sr–H bond length is 2.72 Å. There are a spread of Sr–O bond distances ranging from 2.56–2.71 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the second H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.67 Å) H–O bond length. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fourth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.68 Å) H–O bond length. In the fifth H site, H is bonded in a single-bond geometry to one Sr and one O atom. The H–O bond length is 0.98 Å. In the sixth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the eighth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the tenth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.69 Å) H–O bond length. In the eleventh H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fourteenth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.64 Å) H–O bond length. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the sixteenth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.64 Å) H–O bond length. There are ten inequivalent O sites. In the first O site, O is bonded in a 5-coordinate geometry to four H and one O atom. The O–O bond length is 1.50 Å. In the second O site, O is bonded in a 5-coordinate geometry to four H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of one Sr(H8O5)2 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Sr sites. In the first Sr site, Sr is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.53–2.74 Å. In the second Sr site, Sr is bonded in a 8-coordinate geometry to one H and seven O atoms. The Sr–H bond length is 2.48 Å. There are a spread of Sr–O bond distances ranging from 2.57–2.76 Å. There are thirty-two inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the second H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. In the third H site, H is bonded in a distorted single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eighth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.05 Å) and one longer (1.48 Å) H–O bond length. In the ninth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.07 Å) and one longer (1.49 Å) H–O bond length. In the tenth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.73 Å) H–O bond length. In the eleventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the twelfth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.64 Å) H–O bond length. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the fifteenth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.78 Å) H–O bond length. In the sixteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.64 Å) H–O bond length. In the seventeenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eighteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the nineteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.59 Å) H–O bond length. In the twentieth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the twenty-first H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.59 Å) H–O bond length. In the twenty-second H site, H is bonded in a single-bond geometry to one Sr and one O atom. The H–O bond length is 1.00 Å. In the twenty-third H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.60 Å) H–O bond length. In the twenty-fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the twenty-fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the twenty-sixth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.64 Å) H–O bond length. In the twenty-seventh H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.66 Å) H–O bond length. In the twenty-eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the twenty-ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the thirtieth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.64 Å) H–O bond length. In the thirty-first H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.71 Å) H–O bond length. In the thirty-second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. There are twenty inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to one H and one O atom. The O–O bond length is 1.48 Å. In the second O site, O is bonded in a 2-coordinate geometry to four H and one O atom. The O–O bond length is 1.49 Å. In the third O site, O is bonded in a single-bond geometry to one H and one O atom. In the fourth O site, O is bonded in a 5-coordinate geometry to four H and one O atom. In the fifth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a 3-coordinate geometry to one Sr and three H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eleventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the twelfth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the thirteenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourteenth O site, O is bonded in a distorted single-bond geometry to one Sr and three H atoms. In the fifteenth O site, O is bonded in a 1-coordinate geometry to four H atoms. In the sixteenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventeenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighteenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the nineteenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the twentieth O site, O is bonded in a water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the monoclinic Cc space group. The structure is two-dimensional and consists of two Sr(H8O5)2 sheets oriented in the (0, 0, 1) direction. Sr is bonded in a 10-coordinate geometry to two H and eight O atoms. There are one shorter (2.71 Å) and one longer (2.72 Å) Sr–H bond lengths. There are a spread of Sr–O bond distances ranging from 2.55–2.86 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the third H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.53 Å) H–O bond length. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the sixth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.68 Å) H–O bond length. In the seventh H site, H is bonded in a single-bond geometry to one Sr and one O atom. The H–O bond length is 0.98 Å. In the eighth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.20 Å) and one longer (1.25 Å) H–O bond length. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eleventh H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.70 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one Sr and one O atom. The H–O bond length is 0.98 Å. In the thirteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.64 Å) H–O bond length. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the sixteenth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.52 Å) H–O bond length. There are ten inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to three H and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a 4-coordinate geometry to three H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a bent 120 degrees geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of two Sr(H8O5)2 sheets oriented in the (0, 0, 1) direction. In one of the Sr(H8O5)2 sheets, Sr is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.49–2.77 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.69 Å) H–O bond length. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the third H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.60 Å) H–O bond length. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fifth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eighth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.64 Å) H–O bond length. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the tenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. In the eleventh H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fourteenth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.65 Å) H–O bond length. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the sixteenth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. There are ten inequivalent O sites. In the first O site, O is bonded in a 5-coordinate geometry to four H and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a 5-coordinate geometry to four H and one O atom. In the third O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In one of the Sr(H8O5)2 sheets, Sr is bonded in a 9-coordinate geometry to one H and eight O atoms. The Sr–H bond length is 2.55 Å. There are a spread of Sr–O bond distances ranging from 2.59–2.75 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.71 Å) H–O bond length. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the third H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.63 Å) H–O bond length. In the fourth H site, H is bonded in a distorted single-bond geometry to one O atom. The H–O bond length is 1.02 Å. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the sixth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.67 Å) H–O bond length. In the seventh H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.78 Å) H–O bond length. In the eighth H site, H is bonded in a distorted single-bond geometry to one O atom. The H–O bond length is 1.02 Å. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the eleventh H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.07 Å) and one longer (1.43 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one Sr and one O atom. The H–O bond length is 0.97 Å. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fourteenth H site, H is bonded in a distorted single-bond geometry to one O atom. The H–O bond length is 1.02 Å. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 5-coordinate geometry to four H and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a single-bond geometry to one H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a distorted bent 150 degrees geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of two Sr(H8O5)2 sheets oriented in the (0, 0, 1) direction. In one of the Sr(H8O5)2 sheets, Sr is bonded in a 8-coordinate geometry to one H and seven O atoms. The Sr–H bond length is 2.68 Å. There are a spread of Sr–O bond distances ranging from 2.51–2.77 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the second H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.59 Å) H–O bond length. In the third H site, H is bonded in a distorted single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the fourth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.72 Å) H–O bond length. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the sixth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.58 Å) H–O bond length. In the seventh H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.62 Å) H–O bond length. In the eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eleventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fourteenth H site, H is bonded in a distorted linear geometry to one Sr and two O atoms. There is one shorter (1.03 Å) and one longer (1.49 Å) H–O bond length. In the fifteenth H site, H is bonded in a distorted single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to three H and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a single-bond geometry to one H and one O atom. In the third O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a 1-coordinate geometry to one Sr and three H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a distorted bent 120 degrees geometry to two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In one of the Sr(H8O5)2 sheets, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.53–2.74 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.70 Å) H–O bond length. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fourth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.70 Å) H–O bond length. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the sixth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.57 Å) H–O bond length. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the eighth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the tenth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.65 Å) H–O bond length. In the eleventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the twelfth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.59 Å) H–O bond length. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fourteenth H site, H is bonded in a distorted single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.69 Å) H–O bond length. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the sixteenth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.52 Å) H–O bond length. There are ten inequivalent O sites. In the first O site, O is bonded in a 5-coordinate geometry to four H and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a 5-coordinate geometry to four H and one O atom. In the third O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(H8O5)2 by Materials Project

Sr(H8O5)2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of one Sr(H8O5)2 ribbon oriented in the (0, 1, 0) direction and one Sr(H8O5)2 sheet oriented in the (0, 0, 1) direction. In the Sr(H8O5)2 ribbon, Sr is bonded in a 8-coordinate geometry to one H and seven O atoms. The Sr–H bond length is 2.55 Å. There are a spread of Sr–O bond distances ranging from 2.54–2.77 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the second H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.60 Å) H–O bond length. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the eighth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.57 Å) H–O bond length. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eleventh H site, H is bonded in a distorted bent 150 degrees geometry to two O atoms. There is one shorter (1.05 Å) and one longer (1.55 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one Sr and one O atom. The H–O bond length is 0.98 Å. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to two H atoms. In the second O site, O is bonded in a single-bond geometry to one H atom. In the third O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a 1-coordinate geometry to two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the Sr(H8O5)2 sheet, Sr is bonded in a distorted body-centered cubic geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.54–3.00 Å. There are sixteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the second H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.74 Å) H–O bond length. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fourth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.56 Å) H–O bond length. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the sixth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the eighth H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.03 Å) and one longer (1.59 Å) H–O bond length. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the tenth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.04 Å) and one longer (1.55 Å) H–O bond length. In the eleventh H site, H is bonded in a distorted linear geometry to two O atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fourteenth H site, H is bonded in a distorted single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the sixteenth H site, H is bonded in a linear geometry to two O atoms. There is one shorter (1.05 Å) and one longer (1.51 Å) H–O bond length. There are ten inequivalent O sites. In the first O site, O is bonded in a 3-coordinate geometry to four H and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a 4-coordinate geometry to three H and one O atom. In the third O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms. In the fourth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the sixth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the seventh O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the eighth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the ninth O site, O is bonded in a water-like geometry to one Sr and two H atoms. In the tenth O site, O is bonded in a distorted water-like geometry to one Sr and two H atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrH4O3 by Materials Project

Sr(OH)2H2O crystallizes in the monoclinic P2_1 space group. The structure is two-dimensional and consists of one Sr(OH)2H2O sheet oriented in the (0, 0, 1) direction. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.62–2.81 Å. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.02 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to two equivalent Sr2+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one H1+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to four equivalent Sr2+ and one H1+ atom.

36 MATERIALS SCIENCE↗