In3Sb is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. In(1) is bonded to eight equivalent In(1) and four equivalent Sb(1) atoms to form InIn8Sb4 cuboctahedra that share corners with twelve equivalent In(1)In8Sb4 cuboctahedra, edges with eight equivalent Sb(1)In12 cuboctahedra, edges with sixteen equivalent In(1)In8Sb4 cuboctahedra, faces with four equivalent Sb(1)In12 cuboctahedra, and faces with fourteen equivalent In(1)In8Sb4 cuboctahedra. Sb(1) is bonded to twelve equivalent In(1) atoms to form SbIn12 cuboctahedra that share corners with twelve equivalent Sb(1)In12 cuboctahedra, edges with twenty-four equivalent In(1)In8Sb4 cuboctahedra, faces with six equivalent Sb(1)In12 cuboctahedra, and faces with twelve equivalent In(1)In8Sb4 cuboctahedra.
In3Sb is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. In(1) is bonded to eight equivalent In(1) and four equivalent Sb(1) atoms to form InIn8Sb4 cuboctahedra that share corners with twelve equivalent In(1)In8Sb4 cuboctahedra, edges with eight equivalent Sb(1)In12 cuboctahedra, edges with sixteen equivalent In(1)In8Sb4 cuboctahedra, faces with four equivalent Sb(1)In12 cuboctahedra, and faces with fourteen equivalent In(1)In8Sb4 cuboctahedra. All In(1)-In(1) bond lengths are 3.42 Å. All In(1)-Sb(1) bond lengths are 3.42 Å. Sb(1) is bonded to twelve equivalent In(1) atoms to form SbIn12 cuboctahedra that share corners with twelve equivalent Sb(1)In12 cuboctahedra, edges with twenty-four equivalent In(1)In8Sb4 cuboctahedra, faces with six equivalent Sb(1)In12 cuboctahedra, and faces with twelve equivalent In(1)In8Sb4 cuboctahedra.