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Title: Materials Data on Nb2V4Si5 by Materials Project

Abstract

Nb2V4Si5 crystallizes in the orthorhombic Ibam space group. The structure is three-dimensional. Nb2+ is bonded to six Si+2.40- atoms to form distorted NbSi6 octahedra that share corners with four equivalent NbSi6 octahedra, corners with six equivalent VSi7 pentagonal bipyramids, edges with two equivalent NbSi6 octahedra, faces with two equivalent NbSi6 octahedra, and faces with four equivalent VSi7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. There are a spread of Nb–Si bond distances ranging from 2.57–2.66 Å. There are two inequivalent V2+ sites. In the first V2+ site, V2+ is bonded to seven Si+2.40- atoms to form VSi7 pentagonal bipyramids that share corners with six equivalent NbSi6 octahedra, corners with six equivalent VSi7 pentagonal bipyramids, edges with three equivalent VSi7 pentagonal bipyramids, faces with four equivalent NbSi6 octahedra, and faces with two equivalent VSi7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 42–55°. There are a spread of V–Si bond distances ranging from 2.58–2.86 Å. In the second V2+ site, V2+ is bonded in a 7-coordinate geometry to seven Si+2.40- atoms. There are a spread of V–Si bond distances ranging from 2.35–2.83 Å. There are three inequivalent Si+2.40- sites. In the first Si+2.40- site, Si+2.40- is bonded inmore » a 8-coordinate geometry to two equivalent Nb2+, five V2+, and one Si+2.40- atom. The Si–Si bond length is 2.42 Å. In the second Si+2.40- site, Si+2.40- is bonded in a 9-coordinate geometry to four equivalent Nb2+ and five V2+ atoms. In the third Si+2.40- site, Si+2.40- is bonded in a 10-coordinate geometry to eight V2+ and two equivalent Si+2.40- atoms. Both Si–Si bond lengths are 2.57 Å.« less

Authors:
Publication Date:
Other Number(s):
mp-17210
DOE Contract Number:  
AC02-05CH11231; EDCBEE
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Collaborations:
MIT; UC Berkeley; Duke; U Louvain
Subject:
36 MATERIALS SCIENCE
Keywords:
crystal structure; Nb2V4Si5; Nb-Si-V
OSTI Identifier:
1192392
DOI:
https://doi.org/10.17188/1192392

Citation Formats

The Materials Project. Materials Data on Nb2V4Si5 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1192392.
The Materials Project. Materials Data on Nb2V4Si5 by Materials Project. United States. doi:https://doi.org/10.17188/1192392
The Materials Project. 2020. "Materials Data on Nb2V4Si5 by Materials Project". United States. doi:https://doi.org/10.17188/1192392. https://www.osti.gov/servlets/purl/1192392. Pub date:Sun May 03 00:00:00 EDT 2020
@article{osti_1192392,
title = {Materials Data on Nb2V4Si5 by Materials Project},
author = {The Materials Project},
abstractNote = {Nb2V4Si5 crystallizes in the orthorhombic Ibam space group. The structure is three-dimensional. Nb2+ is bonded to six Si+2.40- atoms to form distorted NbSi6 octahedra that share corners with four equivalent NbSi6 octahedra, corners with six equivalent VSi7 pentagonal bipyramids, edges with two equivalent NbSi6 octahedra, faces with two equivalent NbSi6 octahedra, and faces with four equivalent VSi7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. There are a spread of Nb–Si bond distances ranging from 2.57–2.66 Å. There are two inequivalent V2+ sites. In the first V2+ site, V2+ is bonded to seven Si+2.40- atoms to form VSi7 pentagonal bipyramids that share corners with six equivalent NbSi6 octahedra, corners with six equivalent VSi7 pentagonal bipyramids, edges with three equivalent VSi7 pentagonal bipyramids, faces with four equivalent NbSi6 octahedra, and faces with two equivalent VSi7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 42–55°. There are a spread of V–Si bond distances ranging from 2.58–2.86 Å. In the second V2+ site, V2+ is bonded in a 7-coordinate geometry to seven Si+2.40- atoms. There are a spread of V–Si bond distances ranging from 2.35–2.83 Å. There are three inequivalent Si+2.40- sites. In the first Si+2.40- site, Si+2.40- is bonded in a 8-coordinate geometry to two equivalent Nb2+, five V2+, and one Si+2.40- atom. The Si–Si bond length is 2.42 Å. In the second Si+2.40- site, Si+2.40- is bonded in a 9-coordinate geometry to four equivalent Nb2+ and five V2+ atoms. In the third Si+2.40- site, Si+2.40- is bonded in a 10-coordinate geometry to eight V2+ and two equivalent Si+2.40- atoms. Both Si–Si bond lengths are 2.57 Å.},
doi = {10.17188/1192392},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}