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Title: Materials Data on K9Co2S7 by Materials Project

Abstract

K9Co2S7 crystallizes in the cubic P2_13 space group. The structure is three-dimensional. there are five inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to five S2- atoms to form distorted KS5 square pyramids that share a cornercorner with one KS6 octahedra, corners with nine KS5 square pyramids, edges with four equivalent KS5 square pyramids, and a faceface with one KS6 octahedra. The corner-sharing octahedral tilt angles are 44°. There are a spread of K–S bond distances ranging from 3.02–3.40 Å. In the second K1+ site, K1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. All K–S bond lengths are 3.23 Å. In the third K1+ site, K1+ is bonded to six S2- atoms to form a mixture of face and corner-sharing KS6 octahedra. There are three shorter (3.37 Å) and three longer (3.39 Å) K–S bond lengths. In the fourth K1+ site, K1+ is bonded to five S2- atoms to form distorted KS5 square pyramids that share a cornercorner with one KS6 octahedra, corners with nine KS5 square pyramids, edges with four equivalent KS5 square pyramids, and a faceface with one KS6 octahedra. The corner-sharing octahedral tilt angles are 44°. There are a spreadmore » of K–S bond distances ranging from 3.02–3.40 Å. In the fifth K1+ site, K1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. All K–S bond lengths are 3.23 Å. There are two inequivalent Co+2.50+ sites. In the first Co+2.50+ site, Co+2.50+ is bonded in a trigonal planar geometry to three equivalent S2- atoms. All Co–S bond lengths are 2.19 Å. In the second Co+2.50+ site, Co+2.50+ is bonded in a trigonal planar geometry to three equivalent S2- atoms. All Co–S bond lengths are 2.19 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a 1-coordinate geometry to six K1+ and one Co+2.50+ atom. In the second S2- site, S2- is bonded in a 1-coordinate geometry to six K1+ and one Co+2.50+ atom. In the third S2- site, S2- is bonded in an octahedral geometry to six K1+ atoms.« less

Publication Date:
Other Number(s):
mp-21946
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; K9Co2S7; Co-K-S
OSTI Identifier:
1197260
DOI:
10.17188/1197260

Citation Formats

The Materials Project. Materials Data on K9Co2S7 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1197260.
The Materials Project. Materials Data on K9Co2S7 by Materials Project. United States. doi:10.17188/1197260.
The Materials Project. 2020. "Materials Data on K9Co2S7 by Materials Project". United States. doi:10.17188/1197260. https://www.osti.gov/servlets/purl/1197260. Pub date:Wed Apr 29 00:00:00 EDT 2020
@article{osti_1197260,
title = {Materials Data on K9Co2S7 by Materials Project},
author = {The Materials Project},
abstractNote = {K9Co2S7 crystallizes in the cubic P2_13 space group. The structure is three-dimensional. there are five inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to five S2- atoms to form distorted KS5 square pyramids that share a cornercorner with one KS6 octahedra, corners with nine KS5 square pyramids, edges with four equivalent KS5 square pyramids, and a faceface with one KS6 octahedra. The corner-sharing octahedral tilt angles are 44°. There are a spread of K–S bond distances ranging from 3.02–3.40 Å. In the second K1+ site, K1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. All K–S bond lengths are 3.23 Å. In the third K1+ site, K1+ is bonded to six S2- atoms to form a mixture of face and corner-sharing KS6 octahedra. There are three shorter (3.37 Å) and three longer (3.39 Å) K–S bond lengths. In the fourth K1+ site, K1+ is bonded to five S2- atoms to form distorted KS5 square pyramids that share a cornercorner with one KS6 octahedra, corners with nine KS5 square pyramids, edges with four equivalent KS5 square pyramids, and a faceface with one KS6 octahedra. The corner-sharing octahedral tilt angles are 44°. There are a spread of K–S bond distances ranging from 3.02–3.40 Å. In the fifth K1+ site, K1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. All K–S bond lengths are 3.23 Å. There are two inequivalent Co+2.50+ sites. In the first Co+2.50+ site, Co+2.50+ is bonded in a trigonal planar geometry to three equivalent S2- atoms. All Co–S bond lengths are 2.19 Å. In the second Co+2.50+ site, Co+2.50+ is bonded in a trigonal planar geometry to three equivalent S2- atoms. All Co–S bond lengths are 2.19 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a 1-coordinate geometry to six K1+ and one Co+2.50+ atom. In the second S2- site, S2- is bonded in a 1-coordinate geometry to six K1+ and one Co+2.50+ atom. In the third S2- site, S2- is bonded in an octahedral geometry to six K1+ atoms.},
doi = {10.17188/1197260},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {4}
}

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