Sm3S4 crystallizes in the cubic I-43d space group. Sm(1) is bonded to eight equivalent S(1) atoms to form a mixture of distorted edge, corner, and face-sharing SmS8 hexagonal bipyramids. S(1) is bonded to six equivalent Sm(1) atoms to form a mixture of distorted edge, corner, and face-sharing SSm6 octahedra. The corner-sharing octahedral tilt angles range from 18-49°.
Sm3S4 crystallizes in the cubic I-43d space group. Sm(1) is bonded to eight equivalent S(1) atoms to form a mixture of distorted edge, corner, and face-sharing SmS8 hexagonal bipyramids. There are four shorter (2.84 Å) and four longer (3.03 Å) Sm(1)-S(1) bond lengths. S(1) is bonded to six equivalent Sm(1) atoms to form a mixture of distorted edge, corner, and face-sharing SSm6 octahedra. The corner-sharing octahedral tilt angles range from 18-49°.