Lu3S4 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to two equivalent S(1) and four equivalent S(2) atoms to form a mixture of corner and edge-sharing LuS6 octahedra. The corner-sharing octahedra are not tilted. In the second Lu site, Lu(2) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form a mixture of corner and edge-sharing LuS6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent S sites. In the first S site, S(1) is bonded in a square co-planar geometry to two equivalent Lu(1) and two equivalent Lu(2) atoms. In the second S site, S(2) is bonded to one Lu(2) and four equivalent Lu(1) atoms to form a mixture of corner and edge-sharing SLu5 square pyramids.
Lu3S4 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to two equivalent S(1) and four equivalent S(2) atoms to form a mixture of corner and edge-sharing LuS6 octahedra. The corner-sharing octahedra are not tilted. Both Lu(1)-S(1) bond lengths are 2.66 Å. All Lu(1)-S(2) bond lengths are 2.67 Å. In the second Lu site, Lu(2) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form a mixture of corner and edge-sharing LuS6 octahedra. The corner-sharing octahedra are not tilted. Both Lu(2)-S(2) bond lengths are 2.65 Å. All Lu(2)-S(1) bond lengths are 2.67 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a square co-planar geometry to two equivalent Lu(1) and two equivalent Lu(2) atoms. In the second S site, S(2) is bonded to one Lu(2) and four equivalent Lu(1) atoms to form a mixture of corner and edge-sharing SLu5 square pyramids.