Materials Data on CrCuS2 by Materials Project

Abstract

CuCrS2 crystallizes in the trigonal R3m space group. The structure is two-dimensional and consists of three CuCrS2 sheets oriented in the (0, 0, 1) direction. Cr3+ is bonded to six S2- atoms to form distorted edge-sharing CrS6 octahedra. There are three shorter (2.41 Å) and three longer (2.79 Å) Cr–S bond lengths. Cu1+ is bonded in a distorted trigonal planar geometry to four S2- atoms. There are three shorter (2.16 Å) and one longer (2.77 Å) Cu–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 3-coordinate geometry to three equivalent Cr3+ and one Cu1+ atom. In the second S2- site, S2- is bonded in a distorted trigonal planar geometry to three equivalent Cr3+ and three equivalent Cu1+ atoms.