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Title: Materials Data on Nb4Ag2O11 by Materials Project

Abstract

Ag2Nb4O11 crystallizes in the trigonal R3c space group. The structure is three-dimensional. there are two inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to six O2- atoms to form corner-sharing NbO6 octahedra. There are three shorter (1.92 Å) and three longer (2.16 Å) Nb–O bond lengths. In the second Nb5+ site, Nb5+ is bonded to seven O2- atoms to form distorted NbO7 pentagonal bipyramids that share corners with two equivalent NbO6 octahedra, corners with two equivalent NbO7 pentagonal bipyramids, and edges with four equivalent NbO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 39–51°. There are a spread of Nb–O bond distances ranging from 1.89–2.36 Å. There are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ag–O bond distances ranging from 2.60–2.85 Å. In the second Ag1+ site, Ag1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (2.54 Å) and three longer (2.75 Å) Ag–O bond lengths. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two Nb5+ and two Ag1+ atoms. Inmore » the second O2- site, O2- is bonded in a trigonal planar geometry to three equivalent Nb5+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three equivalent Nb5+ and one Ag1+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to three equivalent Nb5+ atoms. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Nb5+ and two Ag1+ atoms.« less

Authors:
Publication Date:
Other Number(s):
mp-984755
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; Nb4Ag2O11; Ag-Nb-O
OSTI Identifier:
1316619
DOI:
https://doi.org/10.17188/1316619

Citation Formats

The Materials Project. Materials Data on Nb4Ag2O11 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1316619.
The Materials Project. Materials Data on Nb4Ag2O11 by Materials Project. United States. doi:https://doi.org/10.17188/1316619
The Materials Project. 2020. "Materials Data on Nb4Ag2O11 by Materials Project". United States. doi:https://doi.org/10.17188/1316619. https://www.osti.gov/servlets/purl/1316619. Pub date:Thu Jul 23 00:00:00 EDT 2020
@article{osti_1316619,
title = {Materials Data on Nb4Ag2O11 by Materials Project},
author = {The Materials Project},
abstractNote = {Ag2Nb4O11 crystallizes in the trigonal R3c space group. The structure is three-dimensional. there are two inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to six O2- atoms to form corner-sharing NbO6 octahedra. There are three shorter (1.92 Å) and three longer (2.16 Å) Nb–O bond lengths. In the second Nb5+ site, Nb5+ is bonded to seven O2- atoms to form distorted NbO7 pentagonal bipyramids that share corners with two equivalent NbO6 octahedra, corners with two equivalent NbO7 pentagonal bipyramids, and edges with four equivalent NbO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 39–51°. There are a spread of Nb–O bond distances ranging from 1.89–2.36 Å. There are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ag–O bond distances ranging from 2.60–2.85 Å. In the second Ag1+ site, Ag1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (2.54 Å) and three longer (2.75 Å) Ag–O bond lengths. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two Nb5+ and two Ag1+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to three equivalent Nb5+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three equivalent Nb5+ and one Ag1+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to three equivalent Nb5+ atoms. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Nb5+ and two Ag1+ atoms.},
doi = {10.17188/1316619},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jul 23 00:00:00 EDT 2020},
month = {Thu Jul 23 00:00:00 EDT 2020}
}