Materials Data on LaSi2 by Materials Project
LaSi2 is hexagonal omega structure-like structured and crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. La is bonded to twelve equivalent Si atoms to form a mixture of face and edge-sharing LaSi12 cuboctahedra. There are a spread of La–Si bond distances ranging from 3.15–3.30 Å. Si is bonded in a 9-coordinate geometry to six equivalent La and three equivalent Si atoms. There are a spread of Si–Si bond distances ranging from 2.34–2.45 Å.
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