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Materials Data on Ca(NiO2)2 by Materials Project

Dataset ·
DOI:https://doi.org/10.17188/1318615· OSTI ID:1318615
Ca(NiO2)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.37–2.48 Å. There are two inequivalent Ni3+ sites. In the first Ni3+ site, Ni3+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing NiO6 octahedra. The corner-sharing octahedra tilt angles range from 49–58°. There are a spread of Ni–O bond distances ranging from 1.97–2.02 Å. In the second Ni3+ site, Ni3+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing NiO6 octahedra. The corner-sharing octahedra tilt angles range from 49–58°. There are a spread of Ni–O bond distances ranging from 1.99–2.06 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Ca2+ and three equivalent Ni3+ atoms to form a mixture of distorted corner and edge-sharing OCa2Ni3 trigonal bipyramids. In the second O2- site, O2- is bonded to two equivalent Ca2+ and three Ni3+ atoms to form a mixture of distorted corner and edge-sharing OCa2Ni3 trigonal bipyramids. In the third O2- site, O2- is bonded to two equivalent Ca2+ and three equivalent Ni3+ atoms to form a mixture of distorted corner and edge-sharing OCa2Ni3 square pyramids. In the fourth O2- site, O2- is bonded in a 5-coordinate geometry to two equivalent Ca2+ and three Ni3+ atoms.
Research Organization:
LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Contributing Organization:
The Materials Project; MIT; UC Berkeley; Duke; U Louvain
DOE Contract Number:
AC02-05CH11231
OSTI ID:
1318615
Report Number(s):
mvc-12653
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
Ca(NiO2)2
Ca-Ni-O
crystal structure