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Title: Materials Data on K5SnAs3 by Materials Project

Abstract

K5SnAs3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are five inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to four As3- atoms to form distorted KAs4 tetrahedra that share corners with three equivalent SnAs4 tetrahedra, corners with five KAs4 tetrahedra, an edgeedge with one KAs4 tetrahedra, and an edgeedge with one SnAs4 tetrahedra. There are a spread of K–As bond distances ranging from 3.33–3.40 Å. In the second K1+ site, K1+ is bonded to four As3- atoms to form distorted KAs4 tetrahedra that share corners with three equivalent KAs4 tetrahedra, corners with five equivalent SnAs4 tetrahedra, and edges with two KAs4 tetrahedra. There are a spread of K–As bond distances ranging from 3.38–3.56 Å. In the third K1+ site, K1+ is bonded in a 3-coordinate geometry to four As3- atoms. There are a spread of K–As bond distances ranging from 3.43–3.92 Å. In the fourth K1+ site, K1+ is bonded in a distorted see-saw-like geometry to four As3- atoms. There are a spread of K–As bond distances ranging from 3.36–3.65 Å. In the fifth K1+ site, K1+ is bonded in a 3-coordinate geometry to three As3- atoms. There are a spread ofmore » K–As bond distances ranging from 3.34–3.58 Å. Sn4+ is bonded to four As3- atoms to form SnAs4 tetrahedra that share corners with eight KAs4 tetrahedra, an edgeedge with one KAs4 tetrahedra, and an edgeedge with one SnAs4 tetrahedra. There are a spread of Sn–As bond distances ranging from 2.67–2.77 Å. There are three inequivalent As3- sites. In the first As3- site, As3- is bonded in a 9-coordinate geometry to seven K1+ and one Sn4+ atom. In the second As3- site, As3- is bonded in a 7-coordinate geometry to five K1+ and two equivalent Sn4+ atoms. In the third As3- site, As3- is bonded in a 7-coordinate geometry to seven K1+ and one Sn4+ atom.« less

Authors:
Publication Date:
Other Number(s):
mp-16989
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; K5SnAs3; As-K-Sn
OSTI Identifier:
1192272
DOI:
https://doi.org/10.17188/1192272

Citation Formats

The Materials Project. Materials Data on K5SnAs3 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1192272.
The Materials Project. Materials Data on K5SnAs3 by Materials Project. United States. doi:https://doi.org/10.17188/1192272
The Materials Project. 2020. "Materials Data on K5SnAs3 by Materials Project". United States. doi:https://doi.org/10.17188/1192272. https://www.osti.gov/servlets/purl/1192272. Pub date:Wed Jul 15 00:00:00 EDT 2020
@article{osti_1192272,
title = {Materials Data on K5SnAs3 by Materials Project},
author = {The Materials Project},
abstractNote = {K5SnAs3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are five inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to four As3- atoms to form distorted KAs4 tetrahedra that share corners with three equivalent SnAs4 tetrahedra, corners with five KAs4 tetrahedra, an edgeedge with one KAs4 tetrahedra, and an edgeedge with one SnAs4 tetrahedra. There are a spread of K–As bond distances ranging from 3.33–3.40 Å. In the second K1+ site, K1+ is bonded to four As3- atoms to form distorted KAs4 tetrahedra that share corners with three equivalent KAs4 tetrahedra, corners with five equivalent SnAs4 tetrahedra, and edges with two KAs4 tetrahedra. There are a spread of K–As bond distances ranging from 3.38–3.56 Å. In the third K1+ site, K1+ is bonded in a 3-coordinate geometry to four As3- atoms. There are a spread of K–As bond distances ranging from 3.43–3.92 Å. In the fourth K1+ site, K1+ is bonded in a distorted see-saw-like geometry to four As3- atoms. There are a spread of K–As bond distances ranging from 3.36–3.65 Å. In the fifth K1+ site, K1+ is bonded in a 3-coordinate geometry to three As3- atoms. There are a spread of K–As bond distances ranging from 3.34–3.58 Å. Sn4+ is bonded to four As3- atoms to form SnAs4 tetrahedra that share corners with eight KAs4 tetrahedra, an edgeedge with one KAs4 tetrahedra, and an edgeedge with one SnAs4 tetrahedra. There are a spread of Sn–As bond distances ranging from 2.67–2.77 Å. There are three inequivalent As3- sites. In the first As3- site, As3- is bonded in a 9-coordinate geometry to seven K1+ and one Sn4+ atom. In the second As3- site, As3- is bonded in a 7-coordinate geometry to five K1+ and two equivalent Sn4+ atoms. In the third As3- site, As3- is bonded in a 7-coordinate geometry to seven K1+ and one Sn4+ atom.},
doi = {10.17188/1192272},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}