Materials Data on Si3W by Materials Project
WSi3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. W4+ is bonded to twelve equivalent Si+1.33- atoms to form a mixture of face and corner-sharing WSi12 cuboctahedra. There are six shorter (2.63 Å) and six longer (2.79 Å) W–Si bond lengths. Si+1.33- is bonded in a 12-coordinate geometry to four equivalent W4+ and eight equivalent Si+1.33- atoms. There are a spread of Si–Si bond distances ranging from 2.47–2.89 Å.
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