Materials Data on Cr2S3 by Materials Project

Abstract

Cr2S3 is Corundum-like structured and crystallizes in the trigonal P-31c space group. The structure is three-dimensional. there are three inequivalent Cr3+ sites. In the first Cr3+ site, Cr3+ is bonded to six equivalent S2- atoms to form a mixture of face, edge, and corner-sharing CrS6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are three shorter (2.38 Å) and three longer (2.43 Å) Cr–S bond lengths. In the second Cr3+ site, Cr3+ is bonded to six equivalent S2- atoms to form a mixture of edge and corner-sharing CrS6 octahedra. The corner-sharing octahedral tilt angles are 45°. All Cr–S bond lengths are 2.41 Å. In the third Cr3+ site, Cr3+ is bonded to six equivalent S2- atoms to form a mixture of face and corner-sharing CrS6 octahedra. The corner-sharing octahedra tilt angles range from 45–50°. All Cr–S bond lengths are 2.43 Å. S2- is bonded in a rectangular see-saw-like geometry to four Cr3+ atoms.