Tb4Bi3 crystallizes in the cubic I-43d space group. Tb(1) is bonded to six equivalent Bi(1) atoms to form a mixture of distorted corner, edge, and face-sharing TbBi6 octahedra. The corner-sharing octahedral tilt angles range from 18-49°. Bi(1) is bonded to eight equivalent Tb(1) atoms to form a mixture of distorted corner, edge, and face-sharing BiTb8 hexagonal bipyramids.
Tb4Bi3 crystallizes in the cubic I-43d space group. Tb(1) is bonded to six equivalent Bi(1) atoms to form a mixture of distorted corner, edge, and face-sharing TbBi6 octahedra. The corner-sharing octahedral tilt angles range from 18-49°. There are three shorter (3.14 Å) and three longer (3.36 Å) Tb(1)-Bi(1) bond lengths. Bi(1) is bonded to eight equivalent Tb(1) atoms to form a mixture of distorted corner, edge, and face-sharing BiTb8 hexagonal bipyramids.