Materials Data on Ni7(PO4)6 by Materials Project
Ni7(PO4)6 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are three inequivalent Ni+2.57+ sites. In the first Ni+2.57+ site, Ni+2.57+ is bonded to six O2- atoms to form NiO6 octahedra that share corners with three NiO6 octahedra, corners with four PO4 tetrahedra, an edgeedge with one NiO6 octahedra, and an edgeedge with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 55–61°. There are a spread of Ni–O bond distances ranging from 2.01–2.10 Å. In the second Ni+2.57+ site, Ni+2.57+ is bonded to six O2- atoms to form NiO6 octahedra that share corners with four equivalent NiO6 octahedra, corners with two equivalent PO4 tetrahedra, an edgeedge with one NiO6 octahedra, and edges with two equivalent PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 55–61°. There are a spread of Ni–O bond distances ranging from 2.05–2.15 Å. In the third Ni+2.57+ site, Ni+2.57+ is bonded to six O2- atoms to form NiO6 octahedra that share corners with four equivalent NiO6 octahedra and corners with six PO4 tetrahedra. The corner-sharing octahedral tilt angles are 59°. There are two shorter (1.99 Å) and four longer (2.09 Å) Ni–O bond lengths. 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 an edgeedge with one NiO6 octahedra. The corner-sharing octahedra tilt angles range from 30–59°. There are a spread of P–O bond distances ranging from 1.52–1.58 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 edges with two equivalent NiO6 octahedra. The corner-sharing octahedra tilt angles range from 47–55°. There is one shorter (1.51 Å) and three longer (1.57 Å) P–O bond length. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Ni+2.57+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ni+2.57+ and one P5+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Ni+2.57+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Ni+2.57+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Ni+2.57+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Ni+2.57+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two Ni+2.57+ and one P5+ atom.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Contributing Organization:
- MIT; UC Berkeley; Duke; U Louvain
- DOE Contract Number:
- AC02-05CH11231; EDCBEE
- OSTI ID:
- 1206183
- Report Number(s):
- mp-32385
- Resource Relation:
- Related Information: https://materialsproject.org/citing
- Country of Publication:
- United States
- Language:
- English
Similar Records
Materials Data on Ni7(PO4)6 by Materials Project
Materials Data on NaNiP2HO7 by Materials Project