Materials Data on U2Si3Rh by Materials Project

Abstract

U2RhSi3 crystallizes in the orthorhombic Pmm2 space group. The structure is three-dimensional. there are two inequivalent U+4.50+ sites. In the first U+4.50+ site, U+4.50+ is bonded in a 10-coordinate geometry to ten Si4- atoms. There are a spread of U–Si bond distances ranging from 2.97–3.04 Å. In the second U+4.50+ site, U+4.50+ is bonded in a 8-coordinate geometry to eight Si4- atoms. There are a spread of U–Si bond distances ranging from 3.00–3.06 Å. Rh3+ is bonded in a trigonal planar geometry to three Si4- atoms. There are one shorter (2.41 Å) and two longer (2.43 Å) Rh–Si bond lengths. There are three inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 9-coordinate geometry to six U+4.50+ and three Si4- atoms. There are one shorter (2.33 Å) and two longer (2.37 Å) Si–Si bond lengths. In the second Si4- site, Si4- is bonded in a 2-coordinate geometry to six U+4.50+, two equivalent Rh3+, and one Si4- atom. In the third Si4- site, Si4- is bonded in a 1-coordinate geometry to six U+4.50+, one Rh3+, and two equivalent Si4- atoms.