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Title: Materials Data on U2Si5Tc3 by Materials Project

Abstract

U2Tc3Si5 crystallizes in the tetragonal P4/mnc space group. The structure is three-dimensional. U+5.50+ is bonded in a 11-coordinate geometry to four Tc+2.33- and nine Si+0.80- atoms. There are two shorter (3.09 Å) and two longer (3.30 Å) U–Tc bond lengths. There are a spread of U–Si bond distances ranging from 2.89–3.19 Å. There are two inequivalent Tc+2.33- sites. In the first Tc+2.33- site, Tc+2.33- is bonded in a 8-coordinate geometry to two equivalent U+5.50+ and six Si+0.80- atoms. There are a spread of Tc–Si bond distances ranging from 2.45–2.53 Å. In the second Tc+2.33- site, Tc+2.33- is bonded to four equivalent U+5.50+, two equivalent Tc+2.33-, and six Si+0.80- atoms to form a mixture of distorted corner and face-sharing TcU4Si6Tc2 cuboctahedra. Both Tc–Tc bond lengths are 2.74 Å. There are four shorter (2.45 Å) and two longer (2.69 Å) Tc–Si bond lengths. There are three inequivalent Si+0.80- sites. In the first Si+0.80- site, Si+0.80- is bonded in a 9-coordinate geometry to four equivalent U+5.50+, four equivalent Tc+2.33-, and one Si+0.80- atom. The Si–Si bond length is 2.57 Å. In the second Si+0.80- site, Si+0.80- is bonded in a 11-coordinate geometry to four equivalent U+5.50+, three Tc+2.33-, and four Si+0.80- atoms. Theremore » are two shorter (2.57 Å) and two longer (2.74 Å) Si–Si bond lengths. In the third Si+0.80- site, Si+0.80- is bonded in a 9-coordinate geometry to three equivalent U+5.50+, four Tc+2.33-, and two equivalent Si+0.80- atoms.« less

Authors:
Publication Date:
Other Number(s):
mp-21620
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; U2Si5Tc3; Si-Tc-U
OSTI Identifier:
1197065
DOI:
https://doi.org/10.17188/1197065

Citation Formats

The Materials Project. Materials Data on U2Si5Tc3 by Materials Project. United States: N. p., 2017. Web. doi:10.17188/1197065.
The Materials Project. Materials Data on U2Si5Tc3 by Materials Project. United States. doi:https://doi.org/10.17188/1197065
The Materials Project. 2017. "Materials Data on U2Si5Tc3 by Materials Project". United States. doi:https://doi.org/10.17188/1197065. https://www.osti.gov/servlets/purl/1197065. Pub date:Thu May 11 00:00:00 EDT 2017
@article{osti_1197065,
title = {Materials Data on U2Si5Tc3 by Materials Project},
author = {The Materials Project},
abstractNote = {U2Tc3Si5 crystallizes in the tetragonal P4/mnc space group. The structure is three-dimensional. U+5.50+ is bonded in a 11-coordinate geometry to four Tc+2.33- and nine Si+0.80- atoms. There are two shorter (3.09 Å) and two longer (3.30 Å) U–Tc bond lengths. There are a spread of U–Si bond distances ranging from 2.89–3.19 Å. There are two inequivalent Tc+2.33- sites. In the first Tc+2.33- site, Tc+2.33- is bonded in a 8-coordinate geometry to two equivalent U+5.50+ and six Si+0.80- atoms. There are a spread of Tc–Si bond distances ranging from 2.45–2.53 Å. In the second Tc+2.33- site, Tc+2.33- is bonded to four equivalent U+5.50+, two equivalent Tc+2.33-, and six Si+0.80- atoms to form a mixture of distorted corner and face-sharing TcU4Si6Tc2 cuboctahedra. Both Tc–Tc bond lengths are 2.74 Å. There are four shorter (2.45 Å) and two longer (2.69 Å) Tc–Si bond lengths. There are three inequivalent Si+0.80- sites. In the first Si+0.80- site, Si+0.80- is bonded in a 9-coordinate geometry to four equivalent U+5.50+, four equivalent Tc+2.33-, and one Si+0.80- atom. The Si–Si bond length is 2.57 Å. In the second Si+0.80- site, Si+0.80- is bonded in a 11-coordinate geometry to four equivalent U+5.50+, three Tc+2.33-, and four Si+0.80- atoms. There are two shorter (2.57 Å) and two longer (2.74 Å) Si–Si bond lengths. In the third Si+0.80- site, Si+0.80- is bonded in a 9-coordinate geometry to three equivalent U+5.50+, four Tc+2.33-, and two equivalent Si+0.80- atoms.},
doi = {10.17188/1197065},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {5}
}