Materials Data on CrAgSnS4 by Materials Project

Abstract

CrAgSnS4 is Spinel-derived structured and crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Cr3+ is bonded to six S2- atoms to form CrS6 octahedra that share corners with six equivalent AgS4 tetrahedra, edges with two equivalent CrS6 octahedra, and edges with four equivalent SnS6 octahedra. There are two shorter (2.42 Å) and four longer (2.45 Å) Cr–S bond lengths. Ag1+ is bonded to four S2- atoms to form AgS4 tetrahedra that share corners with six equivalent CrS6 octahedra and corners with six equivalent SnS6 octahedra. The corner-sharing octahedra tilt angles range from 51–66°. All Ag–S bond lengths are 2.51 Å. Sn4+ is bonded to six S2- atoms to form SnS6 octahedra that share corners with six equivalent AgS4 tetrahedra, edges with two equivalent SnS6 octahedra, and edges with four equivalent CrS6 octahedra. There are two shorter (2.59 Å) and four longer (2.60 Å) Sn–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to one Cr3+, one Ag1+, and two equivalent Sn4+ atoms. In the second S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Cr3+, one Ag1+, and one Sn4+ atom.