Materials Data on CuSbSe2 by Materials Project

Abstract

CuSbSe2 is Chalcostibite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Cu1+ is bonded to four Se2- atoms to form CuSe4 tetrahedra that share corners with eight equivalent SbSe5 square pyramids, corners with four equivalent CuSe4 tetrahedra, and an edgeedge with one SbSe5 square pyramid. There are one shorter (2.41 Å) and three longer (2.44 Å) Cu–Se bond lengths. Sb3+ is bonded to five Se2- atoms to form distorted SbSe5 square pyramids that share corners with eight equivalent CuSe4 tetrahedra, edges with four equivalent SbSe5 square pyramids, and an edgeedge with one CuSe4 tetrahedra. There are a spread of Sb–Se bond distances ranging from 2.64–3.20 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to two equivalent Cu1+ and two equivalent Sb3+ atoms to form corner-sharing SeCu2Sb2 tetrahedra. In the second Se2- site, Se2- is bonded in a 3-coordinate geometry to two equivalent Cu1+ and three equivalent Sb3+ atoms.