Materials Data on Sc3RhC4 by Materials Project

Abstract

Sc3RhC4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Sc3+ sites. In the first Sc3+ site, Sc3+ is bonded to eight equivalent C3- atoms to form ScC8 hexagonal bipyramids that share corners with eight equivalent CSc5RhC pentagonal bipyramids and faces with two equivalent ScC8 hexagonal bipyramids. All Sc–C bond lengths are 2.43 Å. In the second Sc3+ site, Sc3+ is bonded in a 6-coordinate geometry to six equivalent C3- atoms. There are two shorter (2.35 Å) and four longer (2.40 Å) Sc–C bond lengths. Rh3+ is bonded in a square co-planar geometry to four equivalent C3- atoms. All Rh–C bond lengths are 2.20 Å. C3- is bonded to five Sc3+, one Rh3+, and one C3- atom to form distorted CSc5RhC pentagonal bipyramids that share corners with two equivalent ScC8 hexagonal bipyramids, corners with thirteen equivalent CSc5RhC pentagonal bipyramids, edges with five equivalent CSc5RhC pentagonal bipyramids, and faces with three equivalent CSc5RhC pentagonal bipyramids. The C–C bond length is 1.44 Å.