Materials Data on Sm5Co2 by Materials Project

Abstract

Co2Sm5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Sm sites. In the first Sm site, Sm is bonded in a 2-coordinate geometry to three equivalent Co atoms. There are a spread of Sm–Co bond distances ranging from 2.76–3.22 Å. In the second Sm site, Sm is bonded to four equivalent Co atoms to form distorted edge-sharing SmCo4 tetrahedra. There are two shorter (2.89 Å) and two longer (2.93 Å) Sm–Co bond lengths. In the third Sm site, Sm is bonded in a distorted bent 150 degrees geometry to two equivalent Co atoms. There are one shorter (2.71 Å) and one longer (2.78 Å) Sm–Co bond lengths. Co is bonded in a 7-coordinate geometry to seven Sm atoms.