Materials Data on UCuSi by Materials Project

UCuSi crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. U3+ is bonded to six equivalent Si4- atoms to form a mixture of distorted face, edge, and corner-sharing USi6 pentagonal pyramids. All U–Si bond lengths are 3.04 Å. Cu1+ is bonded in a trigonal planar geometry to three equivalent Si4- atoms. All Cu–Si bond lengths are 2.33 Å. Si4- is bonded in a 9-coordinate geometry to six equivalent U3+ and three equivalent Cu1+ atoms.