TbBi3 crystallizes in the hexagonal P6_3/mmc space group. Tb(1) is bonded to twelve equivalent Bi(1) atoms to form a mixture of face and corner-sharing TbBi12 cuboctahedra. Bi(1) is bonded in a 4-coordinate geometry to four equivalent Tb(1) atoms.
TbBi3 crystallizes in the hexagonal P6_3/mmc space group. Tb(1) is bonded to twelve equivalent Bi(1) atoms to form a mixture of face and corner-sharing TbBi12 cuboctahedra. There are six shorter (3.42 Å) and six longer (3.58 Å) Tb(1)-Bi(1) bond lengths. Bi(1) is bonded in a 4-coordinate geometry to four equivalent Tb(1) atoms.