Materials Data on ThSi2 by Materials Project
ThSi2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Th is bonded to twelve equivalent Si atoms to form a mixture of edge and face-sharing ThSi12 cuboctahedra. There are eight shorter (3.15 Å) and four longer (3.18 Å) Th–Si bond lengths. Si is bonded in a 9-coordinate geometry to six equivalent Th and three equivalent Si atoms. There are two shorter (2.39 Å) and one longer (2.41 Å) Si–Si bond lengths.
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