U.S. Department of EnergyOffice of Scientific and Technical Information
Materials Data on KNb(CuS2)2 by Materials Project
Abstract
KCu2NbS4 crystallizes in the orthorhombic Ama2 space group. The structure is three-dimensional. K1+ is bonded in a 9-coordinate geometry to nine S2- atoms. There are a spread of K–S bond distances ranging from 3.35–3.76 Å. Nb5+ is bonded to four S2- atoms to form NbS4 tetrahedra that share edges with four CuS4 tetrahedra. There are a spread of Nb–S bond distances ranging from 2.30–2.33 Å. There are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with six CuS4 tetrahedra and edges with two equivalent NbS4 tetrahedra. There are two shorter (2.33 Å) and two longer (2.35 Å) Cu–S bond lengths. In the second Cu1+ site, Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with four equivalent CuS4 tetrahedra and edges with two equivalent NbS4 tetrahedra. There are one shorter (2.34 Å) and three longer (2.35 Å) Cu–S bond lengths. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to one K1+, one Nb5+, and three Cu1+ atoms. In the second S2- site, S2- is bonded in a 6-coordinate geometry tomore »
- Publication Date:
- Other Number(s):
- mp-1106233
- DOE Contract Number:
- AC02-05CH11231
- Research Org.:
- LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Collaborations:
- The Materials Project; MIT; UC Berkeley; Duke; U Louvain
- Subject:
- 36 MATERIALS SCIENCE; Cu-K-Nb-S; KNb(CuS2)2; crystal structure
- OSTI Identifier:
- 1710955
- DOI:
- https://doi.org/10.17188/1710955
Citation Formats
Materials Data on KNb(CuS2)2 by Materials Project. United States: N. p., 2020.
Web. doi:10.17188/1710955.
Materials Data on KNb(CuS2)2 by Materials Project. United States. doi:https://doi.org/10.17188/1710955
2020.
"Materials Data on KNb(CuS2)2 by Materials Project". United States. doi:https://doi.org/10.17188/1710955. https://www.osti.gov/servlets/purl/1710955. Pub date:Sat May 09 04:00:00 UTC 2020
@article{osti_1710955,
title = {Materials Data on KNb(CuS2)2 by Materials Project},
abstractNote = {KCu2NbS4 crystallizes in the orthorhombic Ama2 space group. The structure is three-dimensional. K1+ is bonded in a 9-coordinate geometry to nine S2- atoms. There are a spread of K–S bond distances ranging from 3.35–3.76 Å. Nb5+ is bonded to four S2- atoms to form NbS4 tetrahedra that share edges with four CuS4 tetrahedra. There are a spread of Nb–S bond distances ranging from 2.30–2.33 Å. There are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with six CuS4 tetrahedra and edges with two equivalent NbS4 tetrahedra. There are two shorter (2.33 Å) and two longer (2.35 Å) Cu–S bond lengths. In the second Cu1+ site, Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with four equivalent CuS4 tetrahedra and edges with two equivalent NbS4 tetrahedra. There are one shorter (2.34 Å) and three longer (2.35 Å) Cu–S bond lengths. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to one K1+, one Nb5+, and three Cu1+ atoms. In the second S2- site, S2- is bonded in a 6-coordinate geometry to four equivalent K1+, one Nb5+, and one Cu1+ atom. In the third S2- site, S2- is bonded in a 3-coordinate geometry to two equivalent K1+, one Nb5+, and two Cu1+ atoms.},
doi = {10.17188/1710955},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat May 09 04:00:00 UTC 2020},
month = {Sat May 09 04:00:00 UTC 2020}
}