Materials Data on Ba(AgS)2 by Materials Project

Abstract

Ba(AgS)2 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Ba2+ is bonded to six equivalent S2- atoms to form BaS6 octahedra that share corners with twelve equivalent AgS4 tetrahedra, edges with six equivalent BaS6 octahedra, and edges with six equivalent AgS4 tetrahedra. All Ba–S bond lengths are 3.16 Å. Ag1+ is bonded to four equivalent S2- atoms to form AgS4 tetrahedra that share corners with six equivalent BaS6 octahedra, corners with six equivalent AgS4 tetrahedra, edges with three equivalent BaS6 octahedra, and edges with three equivalent AgS4 tetrahedra. The corner-sharing octahedra tilt angles range from 18–54°. There are one shorter (2.69 Å) and three longer (2.70 Å) Ag–S bond lengths. S2- is bonded to three equivalent Ba2+ and four equivalent Ag1+ atoms to form a mixture of distorted corner and edge-sharing SBa3Ag4 pentagonal bipyramids.