Materials Data on CoRuS4 by Materials Project

Abstract

RuCoS4 is pyrite-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ru6+ is bonded to six S2- atoms to form RuS6 octahedra that share corners with four equivalent RuS6 octahedra, corners with eight equivalent CoS6 octahedra, and corners with two equivalent SCo2RuS tetrahedra. The corner-sharing octahedra tilt angles range from 64–66°. All Ru–S bond lengths are 2.36 Å. Co2+ is bonded to six S2- atoms to form CoS6 octahedra that share corners with four equivalent CoS6 octahedra, corners with eight equivalent RuS6 octahedra, and corners with four equivalent SCo2RuS tetrahedra. The corner-sharing octahedra tilt angles range from 64–65°. There are a spread of Co–S bond distances ranging from 2.30–2.36 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent Ru6+, one Co2+, and one S2- atom. The S–S bond length is 2.19 Å. In the second S2- site, S2- is bonded to one Ru6+, two equivalent Co2+, and one S2- atom to form distorted SCo2RuS tetrahedra that share a cornercorner with one RuS6 octahedra, corners with two equivalent CoS6 octahedra, and corners with seven equivalent SCo2RuS tetrahedra. The corner-sharing octahedra tilt angles range from 75–79°. The S–S bond length is 2.15 Å.