Tm5Pb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 6-coordinate geometry to six equivalent Pb(1) atoms. In the second Tm site, Tm(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 Tm(1) and five equivalent Tm(2) atoms.
Tm5Pb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 6-coordinate geometry to six equivalent Pb(1) atoms. All Tm(1)-Pb(1) bond lengths are 3.18 Å. In the second Tm site, Tm(2) is bonded in a 5-coordinate geometry to five equivalent Pb(1) atoms. There are a spread of Tm(2)-Pb(1) bond distances ranging from 3.04-3.55 Å. Pb(1) is bonded in a 9-coordinate geometry to four equivalent Tm(1) and five equivalent Tm(2) atoms.