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DOE OSTI2020

Materials Data on SrPrFeCoO6 by Materials Project

SrPrFeCoO6 crystallizes in the triclinic P1 space group. The structure is three-dimensional. Sr2+ is bonded to twelve O2- atoms to form distorted SrO12 cuboctahedra that share corners with twelve equivalent SrO12 cuboctahedra, faces with four equivalent FeO6 octahedra, and faces with four equivalent CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.57–2.94 Å. Pr3+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Pr–O bond distances ranging from 2.48–3.02 Å. Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six equivalent CoO6 octahedra and faces with four equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 2–19°. There is two shorter (1.98 Å) and four longer (1.99 Å) Fe–O bond length. Co4+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with six equivalent FeO6 octahedra and faces with four equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 2–19°. There are a spread of Co–O bond distances ranging from 1.89–1.94 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Sr2+, two equivalent Pr3+, one Fe3+, and one Co4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Sr2+, two equivalent Pr3+, one Fe3+, and one Co4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+, two equivalent Pr3+, one Fe3+, and one Co4+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+, two equivalent Pr3+, one Fe3+, and one Co4+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+, two equivalent Pr3+, one Fe3+, and one Co4+ atom. In the sixth O2- site, O2- is bonded to two equivalent Sr2+, two equivalent Pr3+, one Fe3+, and one Co4+ atom to form distorted corner-sharing OSr2Pr2FeCo octahedra. The corner-sharing octahedral tilt angles are 1°.

36 MATERIALS SCIENCE↗
DOE OSTI2021

Valence Effects of Fe Impurity for Recovered LiNi 0.6 Co 0.2 Mn 0.2 O 2 Cathode Materials

Iron impurities are generally included in the obtained leaching liquor solution during the hydrometallurgical recycling method of spent lithium-ion batteries (LIBs) due to the usage of iron in battery casings and machinery parts of recycling equipment, which would definitely affect the physical and electrochemical features of the recovered active materials. In this paper, the effects of iron impurity with different valence states (Fe 2+ and Fe 3+ ) and gradient concentrations (0.2, 1.0, and 5.0 at. %) for the obtained LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622) cathodes are fully studied. It is found that Fe3+ impurity could easily lower the tap density and average size of NCM622 particles and even introduce some impurity phases in the NCM622 structure at high concentration (5.0 at. %), leading to much lower specific capacity, worse rate capability, and cycling performance of the Fe 3+ -based NCM622 cathode. On contrast, with certain concentrations of Fe 2+ impurity (0.2 and 1.0 at. %), the NCM622 cathode material exhibits comparable and much better electrochemical properties compared with the virgin NCM622 materials. Based on these results, the valence of Fe impurity should be considered and controlled as well as its concentration during the recycling process design for spent LIBs.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2020

Materials Data on RbFeS2 by Materials Project

RbFeS2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Rb1+ is bonded to eight equivalent S2- atoms to form distorted RbS8 hexagonal bipyramids that share corners with four equivalent RbS8 hexagonal bipyramids, corners with six equivalent FeS4 tetrahedra, edges with six equivalent RbS8 hexagonal bipyramids, edges with five equivalent FeS4 tetrahedra, and faces with two equivalent RbS8 hexagonal bipyramids. There are a spread of Rb–S bond distances ranging from 3.49–3.57 Å. Fe3+ is bonded to four equivalent S2- atoms to form FeS4 tetrahedra that share corners with six equivalent RbS8 hexagonal bipyramids, edges with five equivalent RbS8 hexagonal bipyramids, and edges with two equivalent FeS4 tetrahedra. There are two shorter (2.18 Å) and two longer (2.19 Å) Fe–S bond lengths. S2- is bonded in a 2-coordinate geometry to four equivalent Rb1+ and two equivalent Fe3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaLi3Fe4(SiO3)8 by Materials Project

NaLi3Fe4(SiO3)8 is Esseneite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.38 Å. In the second Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.39 Å. There are six inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.08–2.57 Å. In the second Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.07–2.58 Å. In the third Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.08–2.58 Å. In the fourth Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.09–2.57 Å. In the fifth Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.09–2.58 Å. In the sixth Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.08–2.58 Å. There are eight inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.94–2.19 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.93–2.20 Å. In the third Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.93–2.20 Å. In the fourth Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.94–2.16 Å. In the fifth Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.94–2.19 Å. In the sixth Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.94–2.17 Å. In the seventh Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.94–2.19 Å. In the eighth Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.94–2.18 Å. There are sixteen inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 35–60°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 35–61°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 35–60°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 35–60°. There is one shorter (1.62 Å) and three longer (1.65 Å) Si–O bond length. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 35–60°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the sixth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 35–61°. There are a spread of Si–O bond distances ranging from 1.62–1.65 Å. In the seventh Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–60°. There are a spread of Si–O bond distances ranging from 1.62–1.65 Å. In the eighth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 33–60°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the ninth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–58°. There is one shorter (1.62 Å) and three longer (1.65 Å) Si–O bond length. In the tenth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–58°. There is one shorter (1.62 Å) and three longer (1.65 Å) Si–O bond length. In the eleventh Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–58°. There is one shorter (1.62 Å) and three longer (1.65 Å) Si–O bond length. In the twelfth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 33–60°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. In the thirteenth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 33–60°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the fourteenth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–59°. There is one shorter (1.62 Å) and three longer (1.65 Å) Si–O bond length. In the fifteenth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 35–60°. There is one shorter (1.62 Å) and three longer (1.65 Å) Si–O bond length. In the sixteenth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three FeO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 33–60°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. There are forty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Fe3+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Fe3+, and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Li1+ and two Si4+ atoms. In the fourth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Li1+ and two Si4+ atoms. In the sixth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Fe3+, and one Si4+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Li1+ and two Si4+ atoms. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Fe3+, and one Si4+ atom. In the tenth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Li1+ and two Si4+ atoms. In the twelfth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Li1+ and two Si4+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the fifteenth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Fe3+, and one Si4+ atom. In the sixteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Li1+ and two Si4+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the eighteenth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Fe3+, and one Si4+ atom. In the nineteenth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Fe3+, and one Si4+ atom. In the twentieth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the twenty-first O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+ and two Si4+ atoms. In the twenty-second O2- site, O2- is bonded in a 4-coordinate geometry to one Na1+, two Fe3+, and one Si4+ atom. In the twenty-third O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the twenty-fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Li1+ and two Si4+ atoms. In the twenty-fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+ and two Si4+ atoms. In the twenty-sixth O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+, one Fe3+, and one Si4+ atom. In the twenty-seventh O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Fe3+, and one Si4+ atom. In the twenty-eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+ and two Si4+ atoms. In the twenty-ninth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the thirtieth O2- site, O2- is bonded in a 4-coordinate geometry to one Na1+, two Fe3+, and one Si4+ atom. In the thirty-first O2- site, O2- is bonded in a 4-coordinate geometry to one Na1+, two Fe3+, and one Si4+ atom. In the thirty-second O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Fe3+, and one Si4+ atom. In the thirty-third O2- site, O2- i

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe4Te2MoC14(SO7)2 by Materials Project

MoFe4C13Te2S2O13CO crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional and consists of four formaldehyde molecules and one MoFe4C13Te2S2O13 framework. In the MoFe4C13Te2S2O13 framework, Mo6+ is bonded in a 2-coordinate geometry to two Te2- and two S2- atoms. There are one shorter (2.78 Å) and one longer (2.85 Å) Mo–Te bond lengths. There are one shorter (2.44 Å) and one longer (2.45 Å) Mo–S bond lengths. There are four inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded in a 5-coordinate geometry to three C+1.29+, one Te2-, and one S2- atom. There is one shorter (1.77 Å) and two longer (1.79 Å) Fe–C bond length. The Fe–Te bond length is 2.58 Å. The Fe–S bond length is 2.26 Å. In the second Fe3+ site, Fe3+ is bonded in a 5-coordinate geometry to three C+1.29+, one Te2-, and one S2- atom. There is one shorter (1.78 Å) and two longer (1.79 Å) Fe–C bond length. The Fe–Te bond length is 2.59 Å. The Fe–S bond length is 2.28 Å. In the third Fe3+ site, Fe3+ is bonded in a 4-coordinate geometry to three C+1.29+, two Te2-, and one S2- atom. There are a spread of Fe–C bond distances ranging from 1.77–1.81 Å. There are one shorter (2.61 Å) and one longer (2.93 Å) Fe–Te bond lengths. The Fe–S bond length is 2.29 Å. In the fourth Fe3+ site, Fe3+ is bonded in a 5-coordinate geometry to three C+1.29+, one Te2-, and one S2- atom. There is one shorter (1.77 Å) and two longer (1.79 Å) Fe–C bond length. The Fe–Te bond length is 2.58 Å. The Fe–S bond length is 2.25 Å. There are thirteen inequivalent C+1.29+ sites. In the first C+1.29+ site, C+1.29+ is bonded in a distorted linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the second C+1.29+ site, C+1.29+ is bonded in a distorted linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the third C+1.29+ site, C+1.29+ is bonded in a linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the fourth C+1.29+ site, C+1.29+ is bonded in a linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the fifth C+1.29+ site, C+1.29+ is bonded in a distorted single-bond geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the sixth C+1.29+ site, C+1.29+ is bonded in a distorted linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the seventh C+1.29+ site, C+1.29+ is bonded in a distorted linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the eighth C+1.29+ site, C+1.29+ is bonded in a distorted linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the ninth C+1.29+ site, C+1.29+ is bonded in a distorted linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the tenth C+1.29+ site, C+1.29+ is bonded in a distorted linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the eleventh C+1.29+ site, C+1.29+ is bonded in a single-bond geometry to one O2- atom. The C–O bond length is 1.17 Å. In the twelfth C+1.29+ site, C+1.29+ is bonded in a distorted linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. In the thirteenth C+1.29+ site, C+1.29+ is bonded in a distorted linear geometry to one Fe3+ and one O2- atom. The C–O bond length is 1.16 Å. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 2-coordinate geometry to one Mo6+, two Fe3+, and one O2- atom. The Te–O bond length is 3.52 Å. In the second Te2- site, Te2- is bonded in a 6-coordinate geometry to one Mo6+, three Fe3+, and two O2- atoms. There are one shorter (3.48 Å) and one longer (3.60 Å) Te–O bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 2-coordinate geometry to one Mo6+, two Fe3+, and one O2- atom. The S–O bond length is 3.43 Å. In the second S2- site, S2- is bonded in a 4-coordinate geometry to one Mo6+, two Fe3+, and one O2- atom. The S–O bond length is 3.26 Å. There are thirteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ atom. In the seventh O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ and one Te2- atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ atom. In the tenth O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ and one Te2- atom. In the eleventh O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ and one Te2- atom. In the twelfth O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ and one S2- atom. In the thirteenth O2- site, O2- is bonded in a single-bond geometry to one C+1.29+ and one S2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe2CuH4(OF4)2 by Materials Project

Fe2CuH4(OF4)2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Fe3+ is bonded to six F1- atoms to form FeF6 octahedra that share corners with two equivalent CuO2F4 octahedra and corners with four equivalent FeF6 octahedra. The corner-sharing octahedra tilt angles range from 24–56°. There are a spread of Fe–F bond distances ranging from 1.93–1.99 Å. Cu2+ is bonded to two equivalent O2- and four F1- atoms to form distorted CuO2F4 octahedra that share corners with four equivalent FeF6 octahedra. The corner-sharing octahedra tilt angles range from 36–56°. Both Cu–O bond lengths are 1.95 Å. There are two shorter (1.93 Å) and two longer (2.54 Å) Cu–F bond lengths. 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 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. O2- is bonded in a distorted trigonal planar geometry to one Cu2+ and two H1+ atoms. There are five inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Fe3+ atoms. In the second F1- site, F1- is bonded in a bent 150 degrees geometry to one Fe3+ and one Cu2+ atom. In the third F1- site, F1- is bonded in a distorted bent 120 degrees geometry to one Fe3+ and one Cu2+ atom. In the fourth F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Fe3+ atoms. In the fifth F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Fe3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaFeCuPb2ClO5 by Materials Project

BaFeCuPb2O5Cl crystallizes in the tetragonal P4mm space group. The structure is three-dimensional. Ba2+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Ba–O bond distances ranging from 2.83–3.31 Å. Fe3+ is bonded to five O2- atoms to form distorted FeO5 trigonal bipyramids that share a cornercorner with one CuO5 square pyramid and corners with four equivalent FeO5 trigonal bipyramids. There is one shorter (1.87 Å) and four longer (2.04 Å) Fe–O bond length. Cu2+ is bonded to five O2- atoms to form CuO5 square pyramids that share corners with four equivalent CuO5 square pyramids and a cornercorner with one FeO5 trigonal bipyramid. There are four shorter (2.00 Å) and one longer (2.35 Å) Cu–O bond lengths. There are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to four equivalent O2- and four equivalent Cl1- atoms. All Pb–O bond lengths are 2.46 Å. All Pb–Cl bond lengths are 3.46 Å. In the second Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to four equivalent O2- and four equivalent Cl1- atoms. All Pb–O bond lengths are 2.46 Å. All Pb–Cl bond lengths are 3.33 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to two equivalent Ba2+, two equivalent Cu2+, and two equivalent Pb2+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+, two equivalent Fe3+, and two equivalent Pb2+ atoms. In the third O2- site, O2- is bonded to four equivalent Ba2+, one Fe3+, and one Cu2+ atom to form a mixture of distorted edge and corner-sharing OBa4FeCu octahedra. The corner-sharing octahedral tilt angles are 13°. Cl1- is bonded in a body-centered cubic geometry to eight Pb2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaV3Fe2CuO12 by Materials Project

NaCuFe2(VO4)3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.24–3.06 Å. In the second Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.33–2.92 Å. There are six inequivalent V5+ sites. In the first V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with three FeO6 octahedra and corners with two CuO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 13–49°. There are a spread of V–O bond distances ranging from 1.73–1.78 Å. In the second V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with four FeO6 octahedra and corners with two equivalent CuO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 26–61°. There are a spread of V–O bond distances ranging from 1.70–1.80 Å. In the third V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with five FeO6 octahedra and a cornercorner with one CuO5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 42–61°. There are a spread of V–O bond distances ranging from 1.66–1.80 Å. In the fourth V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with five FeO6 octahedra and a cornercorner with one CuO5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 44–61°. There are a spread of V–O bond distances ranging from 1.66–1.80 Å. In the fifth V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with four FeO6 octahedra and corners with two equivalent CuO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 23–61°. There are a spread of V–O bond distances ranging from 1.70–1.81 Å. In the sixth V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with three FeO6 octahedra and corners with two CuO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 16–49°. There are a spread of V–O bond distances ranging from 1.73–1.77 Å. There are four inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six VO4 tetrahedra, an edgeedge with one FeO6 octahedra, and an edgeedge with one CuO5 trigonal bipyramid. There are a spread of Fe–O bond distances ranging from 1.92–2.14 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six VO4 tetrahedra, an edgeedge with one FeO6 octahedra, and an edgeedge with one CuO5 trigonal bipyramid. There are a spread of Fe–O bond distances ranging from 1.95–2.11 Å. In the third Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six VO4 tetrahedra, an edgeedge with one FeO6 octahedra, and an edgeedge with one CuO5 trigonal bipyramid. There are a spread of Fe–O bond distances ranging from 1.95–2.10 Å. In the fourth Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six VO4 tetrahedra, an edgeedge with one FeO6 octahedra, and an edgeedge with one CuO5 trigonal bipyramid. There are a spread of Fe–O bond distances ranging from 1.94–2.14 Å. There are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded to five O2- atoms to form CuO5 trigonal bipyramids that share corners with five VO4 tetrahedra and edges with two FeO6 octahedra. There are a spread of Cu–O bond distances ranging from 1.91–2.19 Å. In the second Cu2+ site, Cu2+ is bonded to five O2- atoms to form CuO5 trigonal bipyramids that share corners with five VO4 tetrahedra and edges with two FeO6 octahedra. There are a spread of Cu–O bond distances ranging from 1.93–2.15 Å. There are twenty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one V5+, one Fe3+, and one Cu2+ atom. In the second O2- site, O2- is bonded in a linear geometry to one V5+ and one Fe3+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+, one V5+, and one Cu2+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+ and two Fe3+ atoms. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+, one V5+, and one Fe3+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one V5+, one Fe3+, and one Cu2+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Fe3+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+, one V5+, and one Fe3+ atom. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+ and two Fe3+ atoms. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+, one Fe3+, and one Cu2+ atom. In the eleventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two Na1+ and one V5+ atom. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to one V5+, one Fe3+, and one Cu2+ atom. In the thirteenth O2- site, O2- is bonded in a 3-coordinate geometry to one V5+, one Fe3+, and one Cu2+ atom. In the fourteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+ and one V5+ atom. In the fifteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+, one Fe3+, and one Cu2+ atom. In the sixteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+ and two Fe3+ atoms. In the seventeenth O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Fe3+ atom. In the eighteenth O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Fe3+ atom. In the nineteenth O2- site, O2- is bonded in a 3-coordinate geometry to one V5+, one Fe3+, and one Cu2+ atom. In the twentieth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one V5+, and one Fe3+ atom. In the twenty-first O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+ and two Fe3+ atoms. In the twenty-second O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+, one V5+, and one Cu2+ atom. In the twenty-third O2- site, O2- is bonded in a distorted linear geometry to one Na1+, one V5+, and one Fe3+ atom. In the twenty-fourth O2- site, O2- is bonded in a 3-coordinate geometry to one V5+, one Fe3+, and one Cu2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaNdFeCoO6 by Materials Project

BaNdFeCoO6 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4mm space group. The structure is three-dimensional. Ba2+ is bonded to twelve O2- atoms to form BaO12 cuboctahedra that share corners with four equivalent BaO12 cuboctahedra, corners with eight equivalent NdO12 cuboctahedra, faces with two equivalent NdO12 cuboctahedra, faces with four equivalent BaO12 cuboctahedra, faces with four equivalent FeO6 octahedra, and faces with four equivalent CoO6 octahedra. There are a spread of Ba–O bond distances ranging from 2.77–2.95 Å. Nd3+ is bonded to twelve O2- atoms to form NdO12 cuboctahedra that share corners with four equivalent NdO12 cuboctahedra, corners with eight equivalent BaO12 cuboctahedra, faces with two equivalent BaO12 cuboctahedra, faces with four equivalent NdO12 cuboctahedra, faces with four equivalent FeO6 octahedra, and faces with four equivalent CoO6 octahedra. There are a spread of Nd–O bond distances ranging from 2.61–2.76 Å. Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with two equivalent CoO6 octahedra, corners with four equivalent FeO6 octahedra, faces with four equivalent BaO12 cuboctahedra, and faces with four equivalent NdO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–10°. There are a spread of Fe–O bond distances ranging from 1.96–2.00 Å. Co4+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with four equivalent CoO6 octahedra, faces with four equivalent BaO12 cuboctahedra, and faces with four equivalent NdO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–12°. There are a spread of Co–O bond distances ranging from 1.92–2.01 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Ba2+, one Fe3+, and one Co4+ atom to form a mixture of distorted edge and corner-sharing OBa4FeCo octahedra. The corner-sharing octahedral tilt angles are 2°. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+, two equivalent Nd3+, and two equivalent Co4+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+, two equivalent Nd3+, and two equivalent Fe3+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Nd3+, one Fe3+, and one Co4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba(FeSe2)2 by Materials Project

BaFe2Se4 crystallizes in the tetragonal I4/m space group. The structure is three-dimensional. Ba2+ is bonded to twelve equivalent Se2- atoms to form BaSe12 cuboctahedra that share corners with eight equivalent FeSe4 tetrahedra, edges with eight equivalent BaSe12 cuboctahedra, edges with eight equivalent FeSe4 tetrahedra, and faces with two equivalent BaSe12 cuboctahedra. There are four shorter (3.41 Å) and eight longer (3.69 Å) Ba–Se bond lengths. Fe3+ is bonded to four equivalent Se2- atoms to form FeSe4 tetrahedra that share corners with four equivalent BaSe12 cuboctahedra, edges with four equivalent BaSe12 cuboctahedra, and edges with two equivalent FeSe4 tetrahedra. All Fe–Se bond lengths are 2.27 Å. Se2- is bonded in a 5-coordinate geometry to three equivalent Ba2+ and two equivalent Fe3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba(FeO2)2 by Materials Project

BaFe2O4 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.71–3.32 Å. In the second Ba2+ site, Ba2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ba–O bond distances ranging from 2.73–3.03 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to four O2- atoms to form corner-sharing FeO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.89–1.92 Å. In the second Fe3+ site, Fe3+ is bonded to four O2- atoms to form corner-sharing FeO4 tetrahedra. There is one shorter (1.90 Å) and three longer (1.91 Å) Fe–O bond length. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two Ba2+ and two Fe3+ atoms. In the second O2- site, O2- is bonded to two Ba2+ and two equivalent Fe3+ atoms to form distorted corner-sharing OBa2Fe2 trigonal pyramids. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+ and two equivalent Fe3+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to three equivalent Ba2+ and two equivalent Fe3+ atoms. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Ba2+ and two equivalent Fe3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiFeH8(SO6)2 by Materials Project

LiFeH8(SO6)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Li1+ is bonded in a 2-coordinate geometry to three O2- atoms. There are a spread of Li–O bond distances ranging from 1.98–2.57 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with two equivalent SO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.97–2.11 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with two equivalent SO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.95–2.05 Å. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.60 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.61 Å) H–O bond length. In the third H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.64 Å) H–O bond length. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.71 Å) H–O bond length. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the seventh H1+ site, H1+ is bonded in a distorted bent 150 degrees geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.58 Å) H–O bond length. In the eighth H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.02 Å) and one longer (1.52 Å) H–O bond length. There are two inequivalent S6+ sites. In the first S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one FeO6 octahedra. The corner-sharing octahedral tilt angles are 18°. There is one shorter (1.46 Å) and three longer (1.50 Å) S–O bond length. In the second S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one FeO6 octahedra. The corner-sharing octahedral tilt angles are 38°. There are a spread of S–O bond distances ranging from 1.48–1.51 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Fe3+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Fe3+ and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Fe3+ and two H1+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Fe3+ and two H1+ atoms. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one H1+ and one S6+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two H1+ and one S6+ atom. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two H1+ and one S6+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+ and one S6+ atom. In the ninth O2- site, O2- is bonded in a distorted water-like geometry to one Li1+ and one S6+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Li1+, one H1+, and one S6+ atom. In the eleventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe3+ and one S6+ atom. In the twelfth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Li1+ and one S6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KBaNa2Ti3Fe(Si2O9)2 by Materials Project

KNa2BaTi3Fe(Si2O9)2 crystallizes in the triclinic P1 space group. The structure is three-dimensional. K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.78–3.10 Å. There are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to six O2- atoms to form NaO6 octahedra that share corners with four SiO4 tetrahedra, corners with two TiO5 trigonal bipyramids, edges with two equivalent NaO6 octahedra, edges with two equivalent TiO6 octahedra, and edges with two equivalent FeO6 octahedra. There are a spread of Na–O bond distances ranging from 2.33–2.53 Å. In the second Na1+ site, Na1+ is bonded to six O2- atoms to form distorted NaO6 octahedra that share corners with two SiO4 tetrahedra, corners with two TiO5 trigonal bipyramids, edges with two equivalent NaO6 octahedra, edges with two equivalent TiO6 octahedra, and edges with two equivalent FeO6 octahedra. There are a spread of Na–O bond distances ranging from 2.34–2.54 Å. Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.78–3.01 Å. There are three inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to five O2- atoms to form distorted TiO5 trigonal bipyramids that share a cornercorner with one FeO6 octahedra, corners with two NaO6 octahedra, and corners with four SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 51–67°. There are a spread of Ti–O bond distances ranging from 1.74–1.99 Å. In the second Ti4+ site, Ti4+ is bonded to five O2- atoms to form distorted TiO5 trigonal bipyramids that share a cornercorner with one FeO6 octahedra, corners with two NaO6 octahedra, and corners with four SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 50–68°. There are a spread of Ti–O bond distances ranging from 1.74–2.00 Å. In the third Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with four SiO4 tetrahedra, edges with two equivalent FeO6 octahedra, and edges with four NaO6 octahedra. There are a spread of Ti–O bond distances ranging from 1.87–2.22 Å. Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with two SiO4 tetrahedra, corners with two TiO5 trigonal bipyramids, edges with two equivalent TiO6 octahedra, and edges with four NaO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.93–2.21 Å. There are four inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one TiO6 octahedra, corners with two NaO6 octahedra, a cornercorner with one SiO4 tetrahedra, and corners with two equivalent TiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 50–65°. There is three shorter (1.63 Å) and one longer (1.68 Å) Si–O bond length. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one NaO6 octahedra, a cornercorner with one TiO6 octahedra, a cornercorner with one FeO6 octahedra, a cornercorner with one SiO4 tetrahedra, and corners with two equivalent TiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 51–63°. There are a spread of Si–O bond distances ranging from 1.63–1.68 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one NaO6 octahedra, a cornercorner with one TiO6 octahedra, a cornercorner with one FeO6 octahedra, a cornercorner with one SiO4 tetrahedra, and corners with two equivalent TiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 50–64°. There are a spread of Si–O bond distances ranging from 1.63–1.66 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one TiO6 octahedra, corners with two NaO6 octahedra, a cornercorner with one SiO4 tetrahedra, and corners with two equivalent TiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 50–65°. There are a spread of Si–O bond distances ranging from 1.63–1.66 Å. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to one Na1+, one Ti4+, one Fe3+, and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Na1+, one Ti4+, one Fe3+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Ti4+, and one Fe3+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Ti4+, and one Fe3+ atom. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+ and two Si4+ atoms. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+ and two Si4+ atoms. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ba2+, one Ti4+, and one Si4+ atom. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ba2+, one Ti4+, and one Si4+ atom. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ba2+, one Ti4+, and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ba2+, one Ti4+, and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Fe3+ atom. In the fourteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Fe3+ atom. In the fifteenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ba2+, one Ti4+, and one Si4+ atom. In the sixteenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ba2+, one Ti4+, and one Si4+ atom. In the seventeenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Ba2+, one Ti4+, and one Si4+ atom. In the eighteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+, one Ba2+, one Ti4+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr4Fe2MoWO12 by Materials Project

Sr4WMoFe2O12 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Sr–O bond distances ranging from 2.63–3.18 Å. In the second Sr2+ site, Sr2+ is bonded to twelve O2- atoms to form distorted SrO12 cuboctahedra that share corners with six equivalent SrO12 cuboctahedra, faces with three equivalent SrO12 cuboctahedra, a faceface with one MoO6 octahedra, faces with three equivalent WO6 octahedra, and faces with four equivalent FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.56–3.12 Å. W4+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six equivalent FeO6 octahedra and faces with six equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–17°. All W–O bond lengths are 1.95 Å. Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with six equivalent FeO6 octahedra and faces with two equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 3–17°. There are a spread of Mo–O bond distances ranging from 2.03–2.12 Å. Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with three equivalent WO6 octahedra, corners with three equivalent MoO6 octahedra, and faces with four equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–17°. There are a spread of Fe–O bond distances ranging from 1.94–2.15 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to four Sr2+, one W4+, and one Fe3+ atom. In the second O2- site, O2- is bonded to four Sr2+, one Mo6+, and one Fe3+ atom to form a mixture of distorted edge and corner-sharing OSr4FeMo octahedra. The corner-sharing octahedra tilt angles range from 0–7°. In the third O2- site, O2- is bonded in a 6-coordinate geometry to four Sr2+, one Mo6+, and one Fe3+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to four Sr2+, one W4+, and one Fe3+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to four Sr2+, one W4+, and one Fe3+ atom. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to four Sr2+, one Mo6+, and one Fe3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSr(FeO2)4 by Materials Project

BaSr(FeO2)4 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.67–3.15 Å. Sr2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sr–O bond distances ranging from 2.56–3.03 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to four O2- atoms to form corner-sharing FeO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.87–1.92 Å. In the second Fe3+ site, Fe3+ is bonded to four O2- atoms to form corner-sharing FeO4 tetrahedra. There is one shorter (1.90 Å) and three longer (1.91 Å) Fe–O bond length. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+, one Sr2+, and two equivalent Fe3+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to one Ba2+, one Sr2+, and two equivalent Fe3+ atoms. In the third O2- site, O2- is bonded in a distorted linear geometry to three equivalent Ba2+ and two equivalent Fe3+ atoms. In the fourth O2- site, O2- is bonded to one Ba2+, one Sr2+, and two equivalent Fe3+ atoms to form distorted corner-sharing OBaSrFe2 tetrahedra. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Ba2+, one Sr2+, and two Fe3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrLa2Fe2O7 by Materials Project

La2SrFe2O7 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.42–2.83 Å. There are two inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.34–2.82 Å. In the second La3+ site, La3+ is bonded to twelve O2- atoms to form LaO12 cuboctahedra that share corners with four equivalent LaO12 cuboctahedra, faces with four equivalent LaO12 cuboctahedra, and faces with eight FeO6 octahedra. There are a spread of La–O bond distances ranging from 2.67–2.91 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with five FeO6 octahedra and faces with four equivalent LaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are five shorter (1.98 Å) and one longer (2.09 Å) Fe–O bond lengths. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with five FeO6 octahedra and faces with four equivalent LaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–9°. There are a spread of Fe–O bond distances ranging from 1.98–2.10 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to four La3+ and two equivalent Fe3+ atoms. In the second O2- site, O2- is bonded to two equivalent Sr2+, two equivalent La3+, and two equivalent Fe3+ atoms to form a mixture of distorted edge, face, and corner-sharing OSr2La2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 9–52°. In the third O2- site, O2- is bonded to one Sr2+, four equivalent La3+, and one Fe3+ atom to form distorted OSrLa4Fe octahedra that share corners with eight OSr2La2Fe2 octahedra and edges with eight OSrLa4Fe octahedra. The corner-sharing octahedra tilt angles range from 14–47°. In the fourth O2- site, O2- is bonded to four equivalent Sr2+, one La3+, and one Fe3+ atom to form distorted OSr4LaFe octahedra that share corners with twelve OSr2La2Fe2 octahedra, edges with eight OSrLa4Fe octahedra, and faces with four equivalent OSr2La2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 17–52°. In the fifth O2- site, O2- is bonded in a distorted linear geometry to four equivalent La3+ and two Fe3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe3(AsO4)4 by Materials Project

Fe3(AsO4)4 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of one Fe3(AsO4)4 sheet oriented in the (-1, 0, 2) direction. there are two inequivalent Fe sites. In the first Fe site, Fe is bonded to five O atoms to form distorted FeO5 trigonal bipyramids that share corners with two equivalent FeO6 octahedra and corners with five AsO4 tetrahedra. The corner-sharing octahedra tilt angles range from 42–66°. There are a spread of Fe–O bond distances ranging from 1.90–2.11 Å. In the second Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with two equivalent AsO4 tetrahedra, corners with four equivalent FeO5 trigonal bipyramids, and edges with two equivalent AsO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.95–2.17 Å. There are two inequivalent As sites. In the first As site, As is bonded to four O atoms to form AsO4 tetrahedra that share corners with three equivalent FeO5 trigonal bipyramids. There are a spread of As–O bond distances ranging from 1.71–1.74 Å. In the second As site, As is bonded to four O atoms to form AsO4 tetrahedra that share a cornercorner with one FeO6 octahedra, corners with two equivalent FeO5 trigonal bipyramids, and an edgeedge with one FeO6 octahedra. The corner-sharing octahedral tilt angles are 48°. There are a spread of As–O bond distances ranging from 1.69–1.79 Å. There are eight inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to one Fe and one As atom. In the second O site, O is bonded in a distorted trigonal non-coplanar geometry to two Fe and one As atom. In the third O site, O is bonded in a single-bond geometry to one As atom. In the fourth O site, O is bonded in a distorted bent 120 degrees geometry to one Fe and one As atom. In the fifth O site, O is bonded in a bent 120 degrees geometry to one Fe and one As atom. In the sixth O site, O is bonded in a single-bond geometry to one As atom. In the seventh O site, O is bonded in a distorted trigonal non-coplanar geometry to two Fe and one As atom. In the eighth O site, O is bonded in a bent 120 degrees geometry to one Fe and one As atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li3Fe3CoO8 by Materials Project

Li3Fe3CoO8 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with three equivalent FeO6 octahedra, corners with three equivalent CoO6 octahedra, an edgeedge with one CoO6 octahedra, edges with four equivalent LiO6 octahedra, and edges with five FeO6 octahedra. The corner-sharing octahedra tilt angles range from 3–11°. There are a spread of Li–O bond distances ranging from 2.15–2.23 Å. In the second Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six equivalent FeO6 octahedra, edges with two equivalent CoO6 octahedra, edges with four LiO6 octahedra, and edges with four FeO6 octahedra. The corner-sharing octahedra tilt angles range from 4–12°. There are a spread of Li–O bond distances ranging from 2.09–2.20 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six equivalent LiO6 octahedra, edges with two equivalent CoO6 octahedra, edges with four LiO6 octahedra, and edges with four FeO6 octahedra. The corner-sharing octahedra tilt angles range from 4–12°. There are a spread of Fe–O bond distances ranging from 2.01–2.08 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with three equivalent LiO6 octahedra, edges with two equivalent CoO6 octahedra, edges with four equivalent FeO6 octahedra, and edges with five LiO6 octahedra. The corner-sharing octahedra tilt angles range from 5–10°. There are a spread of Fe–O bond distances ranging from 1.88–1.97 Å. Co4+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with three equivalent LiO6 octahedra, edges with five LiO6 octahedra, and edges with six FeO6 octahedra. The corner-sharing octahedra tilt angles range from 3–11°. There are a spread of Co–O bond distances ranging from 1.92–1.99 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded to two Li1+, two Fe3+, and one Co4+ atom to form OLi2Fe2Co square pyramids that share corners with nine OLi2Fe2Co square pyramids, edges with four OLi3Fe3 octahedra, and edges with four OLi2Fe2Co square pyramids. In the second O2- site, O2- is bonded to three Li1+ and three Fe3+ atoms to form OLi3Fe3 octahedra that share corners with three equivalent OLi3Fe2Co octahedra, corners with three equivalent OLi2Fe3 square pyramids, an edgeedge with one OLi3Fe2Co octahedra, and edges with eleven OLi2Fe2Co square pyramids. The corner-sharing octahedral tilt angles are 2°. In the third O2- site, O2- is bonded to two equivalent Li1+, two equivalent Fe3+, and one Co4+ atom to form OLi2Fe2Co square pyramids that share corners with three equivalent OLi3Fe2Co octahedra, corners with six OLi2Fe3 square pyramids, edges with three OLi3Fe3 octahedra, and edges with five OLi2Fe2Co square pyramids. The corner-sharing octahedra tilt angles range from 1–3°. In the fourth O2- site, O2- is bonded to three Li1+, two equivalent Fe3+, and one Co4+ atom to form OLi3Fe2Co octahedra that share corners with three equivalent OLi3Fe3 octahedra, corners with three equivalent OLi2Fe2Co square pyramids, an edgeedge with one OLi3Fe3 octahedra, and edges with eleven OLi2Fe2Co square pyramids. The corner-sharing octahedral tilt angles are 2°. In the fifth O2- site, O2- is bonded to two equivalent Li1+ and three Fe3+ atoms to form OLi2Fe3 square pyramids that share corners with three equivalent OLi3Fe3 octahedra, corners with six OLi2Fe2Co square pyramids, edges with three OLi3Fe3 octahedra, and edges with five OLi2Fe2Co square pyramids. The corner-sharing octahedra tilt angles range from 1–4°. In the sixth O2- site, O2- is bonded to two Li1+, two Fe3+, and one Co4+ atom to form OLi2Fe2Co square pyramids that share corners with nine OLi2Fe2Co square pyramids, edges with four OLi3Fe3 octahedra, and edges with four OLi2Fe2Co square pyramids.

36 MATERIALS SCIENCE↗