Materials Data on SrC2 by Materials Project

Abstract

SrC2 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Sr2+ is bonded to eight equivalent C1- atoms to form SrC8 hexagonal bipyramids that share corners with eight equivalent CSr4C trigonal bipyramids and edges with twelve equivalent SrC8 hexagonal bipyramids. There are two shorter (2.83 Å) and six longer (2.95 Å) Sr–C bond lengths. C1- is bonded to four equivalent Sr2+ and one C1- atom to form distorted CSr4C trigonal bipyramids that share corners with four equivalent SrC8 hexagonal bipyramids, corners with sixteen equivalent CSr4C trigonal bipyramids, and edges with six equivalent CSr4C trigonal bipyramids. The C–C bond length is 1.27 Å.