Materials Data on CrCuS2 by Materials Project

Abstract

CuCrS2 crystallizes in the trigonal R3m space group. The structure is three-dimensional. Cr3+ is bonded to six S2- atoms to form distorted edge-sharing CrS6 pentagonal pyramids. There are three shorter (2.33 Å) and three longer (2.39 Å) Cr–S bond lengths. Cu1+ is bonded in a rectangular see-saw-like geometry to four S2- atoms. There are one shorter (2.21 Å) and three longer (2.35 Å) Cu–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 6-coordinate geometry to three equivalent Cr3+ and three equivalent Cu1+ atoms. In the second S2- site, S2- is bonded in a rectangular see-saw-like geometry to three equivalent Cr3+ and one Cu1+ atom.