TlInS2 crystallizes in the monoclinic C2/m space group. Tl(1) is bonded to two equivalent In(1) and four equivalent S(1) atoms to form a mixture of edge and corner-sharing TlIn2S4 octahedra. The corner-sharing octahedra are not tilted. In(1) is bonded in a distorted linear geometry to two equivalent Tl(1) and two equivalent S(1) atoms. S(1) is bonded in a 4-coordinate geometry to two equivalent Tl(1), one In(1), and one S(1) atom.
TlInS2 crystallizes in the monoclinic C2/m space group. Tl(1) is bonded to two equivalent In(1) and four equivalent S(1) atoms to form a mixture of edge and corner-sharing TlIn2S4 octahedra. The corner-sharing octahedra are not tilted. Both Tl(1)-In(1) bond lengths are 3.32 Å. All Tl(1)-S(1) bond lengths are 3.10 Å. In(1) is bonded in a distorted linear geometry to two equivalent Tl(1) and two equivalent S(1) atoms. Both In(1)-S(1) bond lengths are 2.93 Å. S(1) is bonded in a 4-coordinate geometry to two equivalent Tl(1), one In(1), and one S(1) atom. The S(1)-S(1) bond length is 2.13 Å.