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Title: Materials Data on CsCeSiSe4 by Materials Project

Abstract

CsCeSiSe4 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. Cs1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.62–4.04 Å. Ce3+ is bonded to seven Se2- atoms to form distorted CeSe7 pentagonal bipyramids that share corners with two equivalent CeSe7 pentagonal bipyramids, a cornercorner with one SiSe4 tetrahedra, edges with two equivalent CeSe7 pentagonal bipyramids, and edges with three equivalent SiSe4 tetrahedra. There are a spread of Ce–Se bond distances ranging from 3.03–3.18 Å. Si4+ is bonded to four Se2- atoms to form SiSe4 tetrahedra that share a cornercorner with one CeSe7 pentagonal bipyramid and edges with three equivalent CeSe7 pentagonal bipyramids. There are a spread of Si–Se bond distances ranging from 2.27–2.30 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to three equivalent Cs1+, one Ce3+, and one Si4+ atom. In the second Se2- site, Se2- is bonded in a 1-coordinate geometry to two equivalent Cs1+, two equivalent Ce3+, and one Si4+ atom. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to one Cs1+, two equivalent Ce3+, and onemore » Si4+ atom. In the fourth Se2- site, Se2- is bonded in a 1-coordinate geometry to two equivalent Cs1+, two equivalent Ce3+, and one Si4+ atom.« less

Authors:
Publication Date:
Other Number(s):
mp-573969
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; CsCeSiSe4; Ce-Cs-Se-Si
OSTI Identifier:
1272717
DOI:
https://doi.org/10.17188/1272717

Citation Formats

The Materials Project. Materials Data on CsCeSiSe4 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1272717.
The Materials Project. Materials Data on CsCeSiSe4 by Materials Project. United States. doi:https://doi.org/10.17188/1272717
The Materials Project. 2020. "Materials Data on CsCeSiSe4 by Materials Project". United States. doi:https://doi.org/10.17188/1272717. https://www.osti.gov/servlets/purl/1272717. Pub date:Sat May 02 00:00:00 EDT 2020
@article{osti_1272717,
title = {Materials Data on CsCeSiSe4 by Materials Project},
author = {The Materials Project},
abstractNote = {CsCeSiSe4 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. Cs1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.62–4.04 Å. Ce3+ is bonded to seven Se2- atoms to form distorted CeSe7 pentagonal bipyramids that share corners with two equivalent CeSe7 pentagonal bipyramids, a cornercorner with one SiSe4 tetrahedra, edges with two equivalent CeSe7 pentagonal bipyramids, and edges with three equivalent SiSe4 tetrahedra. There are a spread of Ce–Se bond distances ranging from 3.03–3.18 Å. Si4+ is bonded to four Se2- atoms to form SiSe4 tetrahedra that share a cornercorner with one CeSe7 pentagonal bipyramid and edges with three equivalent CeSe7 pentagonal bipyramids. There are a spread of Si–Se bond distances ranging from 2.27–2.30 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to three equivalent Cs1+, one Ce3+, and one Si4+ atom. In the second Se2- site, Se2- is bonded in a 1-coordinate geometry to two equivalent Cs1+, two equivalent Ce3+, and one Si4+ atom. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to one Cs1+, two equivalent Ce3+, and one Si4+ atom. In the fourth Se2- site, Se2- is bonded in a 1-coordinate geometry to two equivalent Cs1+, two equivalent Ce3+, and one Si4+ atom.},
doi = {10.17188/1272717},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}