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Title: Materials Data on KSm2CuS4 by Materials Project

Abstract

KSm2CuS4 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of K–S bond distances ranging from 3.17–3.79 Å. Sm3+ is bonded to six S2- atoms to form SmS6 octahedra that share corners with three equivalent SmS6 octahedra, a cornercorner with one CuS4 tetrahedra, edges with five equivalent SmS6 octahedra, and edges with two equivalent CuS4 tetrahedra. The corner-sharing octahedra tilt angles range from 0–38°. There are a spread of Sm–S bond distances ranging from 2.76–2.87 Å. Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with two equivalent SmS6 octahedra, corners with two equivalent CuS4 tetrahedra, and edges with four equivalent SmS6 octahedra. The corner-sharing octahedral tilt angles are 6°. There are two shorter (2.35 Å) and two longer (2.39 Å) Cu–S bond lengths. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted square co-planar geometry to two equivalent K1+ and four equivalent Sm3+ atoms. In the second S2- site, S2- is bonded to two equivalent K1+, three equivalent Sm3+, and one Cu1+ atom to form a mixture of distortedmore » corner, edge, and face-sharing SK2Sm3Cu octahedra. The corner-sharing octahedral tilt angles are 65°. In the third S2- site, S2- is bonded in a 6-coordinate geometry to two equivalent K1+, two equivalent Sm3+, and two equivalent Cu1+ atoms.« less

Publication Date:
Other Number(s):
mp-11604
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; KSm2CuS4; Cu-K-S-Sm
OSTI Identifier:
1188100
DOI:
https://doi.org/10.17188/1188100

Citation Formats

The Materials Project. Materials Data on KSm2CuS4 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1188100.
The Materials Project. Materials Data on KSm2CuS4 by Materials Project. United States. doi:https://doi.org/10.17188/1188100
The Materials Project. 2020. "Materials Data on KSm2CuS4 by Materials Project". United States. doi:https://doi.org/10.17188/1188100. https://www.osti.gov/servlets/purl/1188100. Pub date:Wed Jul 15 00:00:00 EDT 2020
@article{osti_1188100,
title = {Materials Data on KSm2CuS4 by Materials Project},
author = {The Materials Project},
abstractNote = {KSm2CuS4 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of K–S bond distances ranging from 3.17–3.79 Å. Sm3+ is bonded to six S2- atoms to form SmS6 octahedra that share corners with three equivalent SmS6 octahedra, a cornercorner with one CuS4 tetrahedra, edges with five equivalent SmS6 octahedra, and edges with two equivalent CuS4 tetrahedra. The corner-sharing octahedra tilt angles range from 0–38°. There are a spread of Sm–S bond distances ranging from 2.76–2.87 Å. Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with two equivalent SmS6 octahedra, corners with two equivalent CuS4 tetrahedra, and edges with four equivalent SmS6 octahedra. The corner-sharing octahedral tilt angles are 6°. There are two shorter (2.35 Å) and two longer (2.39 Å) Cu–S bond lengths. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted square co-planar geometry to two equivalent K1+ and four equivalent Sm3+ atoms. In the second S2- site, S2- is bonded to two equivalent K1+, three equivalent Sm3+, and one Cu1+ atom to form a mixture of distorted corner, edge, and face-sharing SK2Sm3Cu octahedra. The corner-sharing octahedral tilt angles are 65°. In the third S2- site, S2- is bonded in a 6-coordinate geometry to two equivalent K1+, two equivalent Sm3+, and two equivalent Cu1+ atoms.},
doi = {10.17188/1188100},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}