Materials Data on Nb2P2O9 by Materials Project
Nb2P2O9 crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. Nb4+ is bonded to seven O2- atoms to form NbO7 pentagonal bipyramids that share a cornercorner with one NbO7 pentagonal bipyramid, corners with four equivalent PO4 tetrahedra, edges with two equivalent NbO7 pentagonal bipyramids, and an edgeedge with one PO4 tetrahedra. There are a spread of Nb–O bond distances ranging from 1.91–2.25 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent NbO7 pentagonal bipyramids and an edgeedge with one NbO7 pentagonal bipyramid. There are a spread of P–O bond distances ranging from 1.50–1.58 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Nb4+ and one P5+ atom. In the second O2- site, O2- is bonded in a linear geometry to two equivalent Nb4+ atoms. In the third O2- site, O2- is bonded in a linear geometry to one Nb4+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted linear geometry to one Nb4+ and one P5+ atom.
- 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:
- 1272753
- Report Number(s):
- mp-756631
- Country of Publication:
- United States
- Language:
- English
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