Materials Data on FeCuS2 by Materials Project

Abstract

CuFeS2 crystallizes in the tetragonal P-4m2 space group. The structure is three-dimensional. Fe3+ is bonded to four equivalent S2- atoms to form FeS4 tetrahedra that share corners with four equivalent FeS4 tetrahedra, corners with four equivalent CuS4 tetrahedra, and edges with two equivalent CuS4 tetrahedra. All Fe–S bond lengths are 2.20 Å. Cu1+ is bonded to four equivalent S2- atoms to form CuS4 tetrahedra that share corners with four equivalent FeS4 tetrahedra, corners with four equivalent CuS4 tetrahedra, and edges with two equivalent FeS4 tetrahedra. All Cu–S bond lengths are 2.31 Å. S2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Fe3+ and two equivalent Cu1+ atoms.