Materials Data on Sm5Ge3C by Materials Project
Sm5Ge3C crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 6-coordinate geometry to six equivalent Ge atoms. All Sm–Ge bond lengths are 3.13 Å. In the second Sm site, Sm is bonded in a 2-coordinate geometry to five equivalent Ge and two equivalent C atoms. There are a spread of Sm–Ge bond distances ranging from 3.08–3.69 Å. Both Sm–C bond lengths are 2.56 Å. Ge is bonded in a 9-coordinate geometry to nine Sm atoms. C is bonded to six equivalent Sm atoms to form face-sharing CSm6 octahedra.
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