Materials Data on SmSi2Rh by Materials Project
SmRhSi2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Sm is bonded in a 6-coordinate geometry to four equivalent Rh and ten Si atoms. All Sm–Rh bond lengths are 3.23 Å. There are a spread of Sm–Si bond distances ranging from 3.17–3.22 Å. Rh is bonded in a 5-coordinate geometry to four equivalent Sm and five Si atoms. There are a spread of Rh–Si bond distances ranging from 2.35–2.42 Å. There are two inequivalent Si sites. In the first Si site, Si is bonded in a distorted single-bond geometry to six equivalent Sm, one Rh, and two equivalent Si atoms. Both Si–Si bond lengths are 2.46 Å. In the second Si site, Si is bonded in a 4-coordinate geometry to four equivalent Sm and four equivalent Rh atoms.
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