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DOE OSTI2020

Materials Data on USi2 by Materials Project

USi2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. U is bonded to twelve equivalent Si atoms to form a mixture of edge and face-sharing USi12 cuboctahedra. There are eight shorter (2.99 Å) and four longer (3.07 Å) U–Si bond lengths. Si is bonded in a 9-coordinate geometry to six equivalent U and three equivalent Si atoms. There are two shorter (2.30 Å) and one longer (2.31 Å) Si–Si bond lengths.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on USi2 by Materials Project

USi2 is hexagonal omega structure structured and crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. U is bonded to twelve equivalent Si atoms to form a mixture of edge and face-sharing USi12 cuboctahedra. All U–Si bond lengths are 3.02 Å. Si is bonded in a 9-coordinate geometry to six equivalent U and three equivalent Si atoms. All Si–Si bond lengths are 2.32 Å.

36 MATERIALS SCIENCE↗