Materials Data on Sm2Re2Si2C by Materials Project

Abstract

Sm2Re2Si2C crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Sm3+ is bonded in a 2-coordinate geometry to five equivalent Si4- and two equivalent C4- atoms. There are a spread of Sm–Si bond distances ranging from 3.09–3.17 Å. Both Sm–C bond lengths are 2.69 Å. Re3+ is bonded in a single-bond geometry to three equivalent Si4- and one C4- atom. There are two shorter (2.47 Å) and one longer (2.48 Å) Re–Si bond lengths. The Re–C bond length is 1.95 Å. Si4- is bonded in a 9-coordinate geometry to five equivalent Sm3+, three equivalent Re3+, and one Si4- atom. The Si–Si bond length is 2.65 Å. C4- is bonded to four equivalent Sm3+ and two equivalent Re3+ atoms to form edge-sharing CSm4Re2 octahedra.