Materials Data on USiAu by Materials Project
UAuSi is hexagonal omega structure-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. U5+ is bonded to six equivalent Au1- and six equivalent Si4- atoms to form a mixture of edge and face-sharing USi6Au6 cuboctahedra. All U–Au bond lengths are 3.16 Å. All U–Si bond lengths are 3.16 Å. Au1- is bonded in a distorted trigonal planar geometry to six equivalent U5+ and three equivalent Si4- atoms. All Au–Si bond lengths are 2.48 Å. Si4- is bonded in a distorted trigonal planar geometry to six equivalent U5+ and three equivalent Au1- atoms.
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