Materials Data on Zn(CoS2)4 by Materials Project

Abstract

Zn(CoS2)4 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are two inequivalent Co+3.50+ sites. In the first Co+3.50+ site, Co+3.50+ is bonded to six S2- atoms to form CoS6 octahedra that share edges with two equivalent ZnS6 octahedra and edges with six CoS6 octahedra. There are four shorter (2.24 Å) and two longer (2.26 Å) Co–S bond lengths. In the second Co+3.50+ site, Co+3.50+ is bonded to six equivalent S2- atoms to form CoS6 octahedra that share corners with six equivalent ZnS6 octahedra and edges with six equivalent CoS6 octahedra. The corner-sharing octahedral tilt angles are 11°. All Co–S bond lengths are 2.29 Å. Zn2+ is bonded to six equivalent S2- atoms to form distorted ZnS6 octahedra that share corners with six equivalent CoS6 octahedra and edges with six equivalent CoS6 octahedra. The corner-sharing octahedral tilt angles are 11°. All Zn–S bond lengths are 2.56 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a rectangular see-saw-like geometry to three Co+3.50+ and one Zn2+ atom. In the second S2- site, S2- is bonded in a distorted T-shaped geometry to three equivalent Co+3.50+ atoms.