Materials Data on Sm3(GeRh)2 by Materials Project

Abstract

Sm3Rh2Ge2 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 7-coordinate geometry to four equivalent Rh and five Ge atoms. There are a spread of Sm–Rh bond distances ranging from 2.94–3.20 Å. There are a spread of Sm–Ge bond distances ranging from 3.04–3.38 Å. In the second Sm site, Sm is bonded in a 9-coordinate geometry to four equivalent Rh and five Ge atoms. There are two shorter (3.07 Å) and two longer (3.16 Å) Sm–Rh bond lengths. There are a spread of Sm–Ge bond distances ranging from 3.03–3.35 Å. Rh is bonded in a 9-coordinate geometry to six Sm and three Ge atoms. There are one shorter (2.56 Å) and two longer (2.61 Å) Rh–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to seven Sm and two equivalent Rh atoms. In the second Ge site, Ge is bonded to eight Sm and four equivalent Rh atoms to form a mixture of distorted corner, edge, and face-sharing GeSm8Rh4 cuboctahedra.