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Title: Materials Data on CsSm2Cu3Se5 by Materials Project

Abstract

CsSm2Cu3Se5 crystallizes in the orthorhombic Cmcm 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 3.55–3.72 Å. Sm3+ is bonded to six Se2- atoms to form SmSe6 octahedra that share a cornercorner with one SmSe6 octahedra, corners with four equivalent CuSe4 tetrahedra, edges with four equivalent SmSe6 octahedra, and edges with five CuSe4 tetrahedra. The corner-sharing octahedral tilt angles are 25°. There are a spread of Sm–Se bond distances ranging from 2.87–2.97 Å. There are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four Se2- atoms to form distorted CuSe4 tetrahedra that share corners with six CuSe4 tetrahedra and edges with four equivalent SmSe6 octahedra. There are two shorter (2.40 Å) and two longer (2.88 Å) Cu–Se bond lengths. In the second Cu1+ site, Cu1+ is bonded to four Se2- atoms to form CuSe4 tetrahedra that share corners with four equivalent SmSe6 octahedra, corners with four CuSe4 tetrahedra, edges with three equivalent SmSe6 octahedra, and an edgeedge with one CuSe4 tetrahedra. The corner-sharing octahedra tilt angles range from 16–61°. There are two shorter (2.51 Å) and twomore » longer (2.57 Å) Cu–Se bond lengths. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to two equivalent Cs1+, two equivalent Sm3+, and two equivalent Cu1+ atoms. In the second Se2- site, Se2- is bonded in a 7-coordinate geometry to two equivalent Cs1+, two equivalent Sm3+, and three Cu1+ atoms. In the third Se2- site, Se2- is bonded to one Cs1+, three equivalent Sm3+, and two equivalent Cu1+ atoms to form a mixture of distorted corner and edge-sharing SeCsSm3Cu2 octahedra. The corner-sharing octahedral tilt angles are 53°.« less

Publication Date:
Other Number(s):
mp-1191238
DOE Contract Number:  
AC02-05CH11231; EDCBEE
Product Type:
Dataset
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)
Subject:
36 MATERIALS SCIENCE
Keywords:
crystal structure; CsSm2Cu3Se5; Cs-Cu-Se-Sm
OSTI Identifier:
1728914
DOI:
https://doi.org/10.17188/1728914

Citation Formats

The Materials Project. Materials Data on CsSm2Cu3Se5 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1728914.
The Materials Project. Materials Data on CsSm2Cu3Se5 by Materials Project. United States. doi:https://doi.org/10.17188/1728914
The Materials Project. 2020. "Materials Data on CsSm2Cu3Se5 by Materials Project". United States. doi:https://doi.org/10.17188/1728914. https://www.osti.gov/servlets/purl/1728914. Pub date:Mon May 04 00:00:00 EDT 2020
@article{osti_1728914,
title = {Materials Data on CsSm2Cu3Se5 by Materials Project},
author = {The Materials Project},
abstractNote = {CsSm2Cu3Se5 crystallizes in the orthorhombic Cmcm 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 3.55–3.72 Å. Sm3+ is bonded to six Se2- atoms to form SmSe6 octahedra that share a cornercorner with one SmSe6 octahedra, corners with four equivalent CuSe4 tetrahedra, edges with four equivalent SmSe6 octahedra, and edges with five CuSe4 tetrahedra. The corner-sharing octahedral tilt angles are 25°. There are a spread of Sm–Se bond distances ranging from 2.87–2.97 Å. There are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four Se2- atoms to form distorted CuSe4 tetrahedra that share corners with six CuSe4 tetrahedra and edges with four equivalent SmSe6 octahedra. There are two shorter (2.40 Å) and two longer (2.88 Å) Cu–Se bond lengths. In the second Cu1+ site, Cu1+ is bonded to four Se2- atoms to form CuSe4 tetrahedra that share corners with four equivalent SmSe6 octahedra, corners with four CuSe4 tetrahedra, edges with three equivalent SmSe6 octahedra, and an edgeedge with one CuSe4 tetrahedra. The corner-sharing octahedra tilt angles range from 16–61°. There are two shorter (2.51 Å) and two longer (2.57 Å) Cu–Se bond lengths. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to two equivalent Cs1+, two equivalent Sm3+, and two equivalent Cu1+ atoms. In the second Se2- site, Se2- is bonded in a 7-coordinate geometry to two equivalent Cs1+, two equivalent Sm3+, and three Cu1+ atoms. In the third Se2- site, Se2- is bonded to one Cs1+, three equivalent Sm3+, and two equivalent Cu1+ atoms to form a mixture of distorted corner and edge-sharing SeCsSm3Cu2 octahedra. The corner-sharing octahedral tilt angles are 53°.},
doi = {10.17188/1728914},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}