Materials Data on U2CuSi3 by Materials Project

Dataset · Sat May 02 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1689222· OSTI ID:1689222

U2CuSi3 crystallizes in the orthorhombic Pmm2 space group. The structure is three-dimensional. there are two inequivalent U5+ sites. In the first U5+ site, U5+ is bonded in a distorted q4 geometry to ten Si4- atoms. There are a spread of U–Si bond distances ranging from 2.99–3.06 Å. In the second U5+ site, U5+ is bonded to eight Si4- atoms to form a mixture of distorted face, edge, and corner-sharing USi8 hexagonal bipyramids. There are a spread of U–Si bond distances ranging from 2.98–3.07 Å. Cu2+ is bonded in a trigonal planar geometry to three Si4- atoms. There are two shorter (2.30 Å) and one longer (2.31 Å) Cu–Si bond lengths. There are three inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 9-coordinate geometry to six U5+ and three Si4- atoms. There are one shorter (2.31 Å) and two longer (2.34 Å) Si–Si bond lengths. In the second Si4- site, Si4- is bonded in a 9-coordinate geometry to six U5+, two equivalent Cu2+, and one Si4- atom. In the third Si4- site, Si4- is bonded in a 9-coordinate geometry to six U5+, one Cu2+, and two equivalent Si4- atoms.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1689222
• Report Number(s): mp-1216820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Cu-Si-U
U2CuSi3
crystal structure