AgSbSe2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. Ag(1) is bonded to two equivalent Se(1) and four equivalent Se(2) atoms to form AgSe6 octahedra that share corners with six equivalent Ag(1)Se6 octahedra, edges with four equivalent Ag(1)Se6 octahedra, and edges with eight equivalent Sb(1)Se6 octahedra. The corner-sharing octahedra are not tilted. Sb(1) is bonded to two equivalent Se(2) and four equivalent Se(1) atoms to form SbSe6 octahedra that share corners with six equivalent Sb(1)Se6 octahedra, edges with four equivalent Sb(1)Se6 octahedra, and edges with eight equivalent Ag(1)Se6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Ag(1) and four equivalent Sb(1) atoms to form SeAg2Sb4 octahedra that share corners with six equivalent Se(1)Ag2Sb4 octahedra, edges with four equivalent Se(1)Ag2Sb4 octahedra, and edges with eight equivalent Se(2)Ag4Sb2 octahedra. The corner-sharing octahedra are not tilted. In the second Se site, Se(2) is bonded to four equivalent Ag(1) and two equivalent Sb(1) atoms to form SeAg4Sb2 octahedra that share corners with six equivalent Se(2)Ag4Sb2 octahedra, edges with four equivalent Se(2)Ag4Sb2 octahedra, and edges with eight equivalent Se(1)Ag2Sb4 octahedra. The corner-sharing octahedra are not tilted.
AgSbSe2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. Ag(1) is bonded to two equivalent Se(1) and four equivalent Se(2) atoms to form AgSe6 octahedra that share corners with six equivalent Ag(1)Se6 octahedra, edges with four equivalent Ag(1)Se6 octahedra, and edges with eight equivalent Sb(1)Se6 octahedra. The corner-sharing octahedra are not tilted. Both Ag(1)-Se(1) bond lengths are 2.89 Å. All Ag(1)-Se(2) bond lengths are 2.90 Å. Sb(1) is bonded to two equivalent Se(2) and four equivalent Se(1) atoms to form SbSe6 octahedra that share corners with six equivalent Sb(1)Se6 octahedra, edges with four equivalent Sb(1)Se6 octahedra, and edges with eight equivalent Ag(1)Se6 octahedra. The corner-sharing octahedra are not tilted. Both Sb(1)-Se(2) bond lengths are 2.89 Å. All Sb(1)-Se(1) bond lengths are 2.90 Å. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Ag(1) and four equivalent Sb(1) atoms to form SeAg2Sb4 octahedra that share corners with six equivalent Se(1)Ag2Sb4 octahedra, edges with four equivalent Se(1)Ag2Sb4 octahedra, and edges with eight equivalent Se(2)Ag4Sb2 octahedra. The corner-sharing octahedra are not tilted. In the second Se site, Se(2) is bonded to four equivalent Ag(1) and two equivalent Sb(1) atoms to form SeAg4Sb2 octahedra that share corners with six equivalent Se(2)Ag4Sb2 octahedra, edges with four equivalent Se(2)Ag4Sb2 octahedra, and edges with eight equivalent Se(1)Ag2Sb4 octahedra. The corner-sharing octahedra are not tilted.