ErAgS2 crystallizes in the tetragonal I4_1/amd space group. Er(1) is bonded to six equivalent S(1) atoms to form a mixture of corner and edge-sharing ErS6 octahedra. The corner-sharing octahedral tilt angles are 11°. Ag(1) is bonded in a distorted square co-planar geometry to four equivalent S(1) atoms. S(1) is bonded to three equivalent Er(1) and two equivalent Ag(1) atoms to form a mixture of distorted corner and edge-sharing SEr3Ag2 square pyramids.
ErAgS2 crystallizes in the tetragonal I4_1/amd space group. Er(1) is bonded to six equivalent S(1) atoms to form a mixture of corner and edge-sharing ErS6 octahedra. The corner-sharing octahedral tilt angles are 11°. All Er(1)-S(1) bond lengths are 2.70 Å. Ag(1) is bonded in a distorted square co-planar geometry to four equivalent S(1) atoms. All Ag(1)-S(1) bond lengths are 2.70 Å. S(1) is bonded to three equivalent Er(1) and two equivalent Ag(1) atoms to form a mixture of distorted corner and edge-sharing SEr3Ag2 square pyramids.