Materials Data on Ag2GeS3 by Materials Project

Abstract

Ag2GeS3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. Ag1+ is bonded to four S2- atoms to form AgS4 tetrahedra that share corners with five equivalent GeS4 tetrahedra and corners with seven equivalent AgS4 tetrahedra. There are a spread of Ag–S bond distances ranging from 2.55–2.61 Å. Ge4+ is bonded to four S2- atoms to form GeS4 tetrahedra that share corners with two equivalent GeS4 tetrahedra and corners with ten equivalent AgS4 tetrahedra. There are a spread of Ge–S bond distances ranging from 2.21–2.39 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded to two equivalent Ag1+ and two equivalent Ge4+ atoms to form corner-sharing SAg2Ge2 tetrahedra. In the second S2- site, S2- is bonded to three equivalent Ag1+ and one Ge4+ atom to form corner-sharing SAg3Ge tetrahedra.