Materials Data on V4ZnS8 by Materials Project

Abstract

V4ZnS8 is beta indium sulfide-derived structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are two inequivalent V+3.50+ sites. In the first V+3.50+ site, V+3.50+ is bonded to six S2- atoms to form VS6 octahedra that share edges with two equivalent ZnS6 octahedra and edges with six VS6 octahedra. There are two shorter (2.36 Å) and four longer (2.37 Å) V–S bond lengths. In the second V+3.50+ site, V+3.50+ is bonded to six equivalent S2- atoms to form VS6 octahedra that share corners with six equivalent ZnS6 octahedra and edges with six equivalent VS6 octahedra. The corner-sharing octahedral tilt angles are 5°. All V–S bond lengths are 2.39 Å. Zn2+ is bonded to six equivalent S2- atoms to form distorted ZnS6 octahedra that share corners with six equivalent VS6 octahedra and edges with six equivalent VS6 octahedra. The corner-sharing octahedral tilt angles are 5°. All Zn–S bond lengths are 2.53 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a rectangular see-saw-like geometry to three V+3.50+ and one Zn2+ atom. In the second S2- site, S2- is bonded in a distorted T-shaped geometry to three equivalent V+3.50+ atoms.