Th3Sb4 crystallizes in the cubic I-43d space group. Th(1) is bonded to eight equivalent Sb(1) atoms to form a mixture of distorted edge, face, and corner-sharing ThSb8 hexagonal bipyramids. Sb(1) is bonded to six equivalent Th(1) atoms to form a mixture of distorted edge, face, and corner-sharing SbTh6 octahedra. The corner-sharing octahedral tilt angles range from 15-51°.
Th3Sb4 crystallizes in the cubic I-43d space group. Th(1) is bonded to eight equivalent Sb(1) atoms to form a mixture of distorted edge, face, and corner-sharing ThSb8 hexagonal bipyramids. There are four shorter (3.23 Å) and four longer (3.32 Å) Th(1)-Sb(1) bond lengths. Sb(1) is bonded to six equivalent Th(1) atoms to form a mixture of distorted edge, face, and corner-sharing SbTh6 octahedra. The corner-sharing octahedral tilt angles range from 15-51°.