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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on NiP4N2O19 by Materials Project

NiO6NiP8(NO13)2(NO)2(O2)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two nitroxyl molecules, two oxygen molecules, one NiO6 cluster, and one NiP8(NO13)2 cluster. In the NiO6 cluster, Ni is bonded in a linear geometry to two equivalent O atoms. Both Ni–O bond lengths are 1.81 Å. There are three inequivalent O sites. In the first O site, O is bonded in a distorted bent 120 degrees geometry to one Ni and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a bent 120 degrees geometry to two O atoms. The O–O bond length is 1.24 Å. In the third O site, O is bonded in a single-bond geometry to one O atom. In the NiP8(NO13)2 cluster, Ni is bonded in a square co-planar geometry to four O atoms. There is two shorter (1.92 Å) and two longer (2.00 Å) Ni–O bond length. There are four inequivalent P sites. In the first P site, P is bonded to four O atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.47–1.63 Å. In the second P site, P is bonded to four O atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.48–1.63 Å. In the third P site, P is bonded to four O atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.47–1.61 Å. In the fourth P site, P is bonded to four O atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.64 Å. N is bonded in a water-like geometry to two O atoms. There is one shorter (1.15 Å) and one longer (1.66 Å) N–O bond length. There are thirteen inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one P atom. In the second O site, O is bonded in a bent 120 degrees geometry to one P and one N atom. In the third O site, O is bonded in a bent 120 degrees geometry to two P atoms. In the fourth O site, O is bonded in a single-bond geometry to one N atom. In the fifth O site, O is bonded in a 2-coordinate geometry to one Ni and one P atom. In the sixth O site, O is bonded in a single-bond geometry to one P atom. In the seventh O site, O is bonded in a bent 150 degrees geometry to two P atoms. In the eighth O site, O is bonded in a distorted bent 150 degrees geometry to one Ni and one P atom. In the ninth O site, O is bonded in a single-bond geometry to one P atom. In the tenth O site, O is bonded in a bent 150 degrees geometry to two P atoms. In the eleventh O site, O is bonded in a single-bond geometry to one P atom. In the twelfth O site, O is bonded in a single-bond geometry to one P atom. In the thirteenth O site, O is bonded in a bent 120 degrees geometry to two P atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ni3P4(NO8)2 by Materials Project

Ni3P4(NO8)2 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of one Ni3P4(NO8)2 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Ni+3.33+ sites. In the first Ni+3.33+ site, Ni+3.33+ is bonded to six O2- atoms to form NiO6 octahedra that share corners with six PO4 tetrahedra and edges with two equivalent NiO6 octahedra. There are a spread of Ni–O bond distances ranging from 2.05–2.11 Å. In the second Ni+3.33+ site, Ni+3.33+ is bonded to six O2- atoms to form NiO6 octahedra that share corners with five PO4 tetrahedra and edges with two NiO6 octahedra. There are a spread of Ni–O bond distances ranging from 1.90–2.13 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with five NiO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 39–61°. There are a spread of P–O bond distances ranging from 1.51–1.63 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three NiO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 45–61°. There are a spread of P–O bond distances ranging from 1.50–1.62 Å. N1+ is bonded in a distorted single-bond geometry to one O2- atom. The N–O bond length is 1.43 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the second O2- site, O2- is bonded in a water-like geometry to one P5+ and one N1+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one Ni+3.33+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Ni+3.33+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two Ni+3.33+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ni+3.33+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Ni+3.33+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to two Ni+3.33+ and one P5+ atom.

36 MATERIALS SCIENCE↗