Tb5Pb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 6-coordinate geometry to six equivalent Pb(1) atoms. In the second Tb site, Tb(2) is bonded in a 5-coordinate geometry to five equivalent Pb(1) atoms. Pb(1) is bonded in a 9-coordinate geometry to four equivalent Tb(1) and five equivalent Tb(2) atoms.
Tb5Pb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 6-coordinate geometry to six equivalent Pb(1) atoms. All Tb(1)-Pb(1) bond lengths are 3.24 Å. In the second Tb site, Tb(2) is bonded in a 5-coordinate geometry to five equivalent Pb(1) atoms. There are a spread of Tb(2)-Pb(1) bond distances ranging from 3.11-3.62 Å. Pb(1) is bonded in a 9-coordinate geometry to four equivalent Tb(1) and five equivalent Tb(2) atoms.