Materials Data on SmSi2Ni by Materials Project

Abstract

SmNiSi2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Sm is bonded in a 4-coordinate geometry to four equivalent Ni and ten Si atoms. All Sm–Ni bond lengths are 3.13 Å. There are a spread of Sm–Si bond distances ranging from 3.08–3.16 Å. Ni is bonded in a 9-coordinate geometry to four equivalent Sm and five Si atoms. There are a spread of Ni–Si bond distances ranging from 2.30–2.34 Å. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to six equivalent Sm, one Ni, and two equivalent Si atoms. Both Si–Si bond lengths are 2.42 Å. In the second Si site, Si is bonded in a 8-coordinate geometry to four equivalent Sm and four equivalent Ni atoms.