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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on USiRh by Materials Project

URhSi crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. U is bonded in a 7-coordinate geometry to two equivalent U, six equivalent Rh, and five equivalent Si atoms. Both U–U bond lengths are 2.69 Å. There are a spread of U–Rh bond distances ranging from 3.02–3.39 Å. There are a spread of U–Si bond distances ranging from 2.88–2.97 Å. Rh is bonded in a 4-coordinate geometry to six equivalent U and four equivalent Si atoms. There are a spread of Rh–Si bond distances ranging from 2.42–2.51 Å. Si is bonded in a 9-coordinate geometry to five equivalent U and four equivalent Rh atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U(SiRh)2 by Materials Project

URh2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. U is bonded in a 8-coordinate geometry to eight equivalent Rh and eight equivalent Si atoms. All U–Rh bond lengths are 3.21 Å. All U–Si bond lengths are 3.06 Å. Rh is bonded to four equivalent U and four equivalent Si atoms to form a mixture of distorted corner, edge, and face-sharing RhU4Si4 tetrahedra. All Rh–Si bond lengths are 2.42 Å. Si is bonded in a 9-coordinate geometry to four equivalent U, four equivalent Rh, and one Si atom. The Si–Si bond length is 2.31 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U2Si5Rh3 by Materials Project

U2Rh3Si5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. U5+ is bonded in a 10-coordinate geometry to ten Si4- atoms. There are a spread of U–Si bond distances ranging from 3.00–3.26 Å. There are two inequivalent Rh+3.33+ sites. In the first Rh+3.33+ site, Rh+3.33+ is bonded in a distorted hexagonal planar geometry to six Si4- atoms. There are a spread of Rh–Si bond distances ranging from 2.44–2.59 Å. In the second Rh+3.33+ site, Rh+3.33+ is bonded in a 5-coordinate geometry to five Si4- atoms. There are a spread of Rh–Si bond distances ranging from 2.37–2.47 Å. There are four inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 9-coordinate geometry to four equivalent U5+, three Rh+3.33+, and two Si4- atoms. There are one shorter (2.50 Å) and one longer (2.52 Å) Si–Si bond lengths. In the second Si4- site, Si4- is bonded in a 3-coordinate geometry to four equivalent U5+, three Rh+3.33+, and two equivalent Si4- atoms. In the third Si4- site, Si4- is bonded in a 4-coordinate geometry to four equivalent U5+ and four equivalent Rh+3.33+ atoms. In the fourth Si4- site, Si4- is bonded in a 3-coordinate geometry to four equivalent U5+, three Rh+3.33+, and two equivalent Si4- atoms.

36 MATERIALS SCIENCE↗