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Title: Materials Data on Eu7Cu44As23 by Materials Project

Abstract

Eu7Cu44As23 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Eu+2.43+ sites. In the first Eu+2.43+ site, Eu+2.43+ is bonded in a 8-coordinate geometry to eight As+2.65- atoms. There are four shorter (3.19 Å) and four longer (3.46 Å) Eu–As bond lengths. In the second Eu+2.43+ site, Eu+2.43+ is bonded in a body-centered cubic geometry to eight equivalent As+2.65- atoms. All Eu–As bond lengths are 3.15 Å. There are three inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four As+2.65- atoms to form a mixture of edge and corner-sharing CuAs4 tetrahedra. There are three shorter (2.48 Å) and one longer (2.55 Å) Cu–As bond lengths. In the second Cu1+ site, Cu1+ is bonded to four As+2.65- atoms to form a mixture of distorted edge and corner-sharing CuAs4 tetrahedra. There are two shorter (2.45 Å) and two longer (2.51 Å) Cu–As bond lengths. In the third Cu1+ site, Cu1+ is bonded to four As+2.65- atoms to form a mixture of distorted edge and corner-sharing CuAs4 tetrahedra. There are a spread of Cu–As bond distances ranging from 2.52–2.69 Å. There are four inequivalent As+2.65- sites. In the first As+2.65- site, As+2.65- ismore » bonded in a cuboctahedral geometry to twelve equivalent Cu1+ atoms. In the second As+2.65- site, As+2.65- is bonded in a body-centered cubic geometry to eight equivalent Cu1+ atoms. In the third As+2.65- site, As+2.65- is bonded in a 10-coordinate geometry to two equivalent Eu+2.43+ and eight Cu1+ atoms. In the fourth As+2.65- site, As+2.65- is bonded in a 10-coordinate geometry to four Eu+2.43+ and six Cu1+ atoms.« less

Publication Date:
Other Number(s):
mp-1196262
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; Eu7Cu44As23; As-Cu-Eu
OSTI Identifier:
1747812
DOI:
https://doi.org/10.17188/1747812

Citation Formats

The Materials Project. Materials Data on Eu7Cu44As23 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1747812.
The Materials Project. Materials Data on Eu7Cu44As23 by Materials Project. United States. doi:https://doi.org/10.17188/1747812
The Materials Project. 2020. "Materials Data on Eu7Cu44As23 by Materials Project". United States. doi:https://doi.org/10.17188/1747812. https://www.osti.gov/servlets/purl/1747812. Pub date:Sat May 02 00:00:00 EDT 2020
@article{osti_1747812,
title = {Materials Data on Eu7Cu44As23 by Materials Project},
author = {The Materials Project},
abstractNote = {Eu7Cu44As23 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Eu+2.43+ sites. In the first Eu+2.43+ site, Eu+2.43+ is bonded in a 8-coordinate geometry to eight As+2.65- atoms. There are four shorter (3.19 Å) and four longer (3.46 Å) Eu–As bond lengths. In the second Eu+2.43+ site, Eu+2.43+ is bonded in a body-centered cubic geometry to eight equivalent As+2.65- atoms. All Eu–As bond lengths are 3.15 Å. There are three inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four As+2.65- atoms to form a mixture of edge and corner-sharing CuAs4 tetrahedra. There are three shorter (2.48 Å) and one longer (2.55 Å) Cu–As bond lengths. In the second Cu1+ site, Cu1+ is bonded to four As+2.65- atoms to form a mixture of distorted edge and corner-sharing CuAs4 tetrahedra. There are two shorter (2.45 Å) and two longer (2.51 Å) Cu–As bond lengths. In the third Cu1+ site, Cu1+ is bonded to four As+2.65- atoms to form a mixture of distorted edge and corner-sharing CuAs4 tetrahedra. There are a spread of Cu–As bond distances ranging from 2.52–2.69 Å. There are four inequivalent As+2.65- sites. In the first As+2.65- site, As+2.65- is bonded in a cuboctahedral geometry to twelve equivalent Cu1+ atoms. In the second As+2.65- site, As+2.65- is bonded in a body-centered cubic geometry to eight equivalent Cu1+ atoms. In the third As+2.65- site, As+2.65- is bonded in a 10-coordinate geometry to two equivalent Eu+2.43+ and eight Cu1+ atoms. In the fourth As+2.65- site, As+2.65- is bonded in a 10-coordinate geometry to four Eu+2.43+ and six Cu1+ atoms.},
doi = {10.17188/1747812},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}