Tm6CoBi2 crystallizes in the hexagonal P-62m space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 5-coordinate geometry to one Co(1) and four equivalent Bi(1) atoms. In the second Tm site, Tm(2) is bonded in a 4-coordinate geometry to two equivalent Co(1) and two equivalent Bi(1) atoms. Co(1) is bonded in a 9-coordinate geometry to three equivalent Tm(1) and six equivalent Tm(2) atoms. Bi(1) is bonded in a 9-coordinate geometry to three equivalent Tm(2) and six equivalent Tm(1) atoms.
Tm6CoBi2 crystallizes in the hexagonal P-62m space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 5-coordinate geometry to one Co(1) and four equivalent Bi(1) atoms. The Tm(1)-Co(1) bond length is 3.20 Å. All Tm(1)-Bi(1) bond lengths are 3.26 Å. In the second Tm site, Tm(2) is bonded in a 4-coordinate geometry to two equivalent Co(1) and two equivalent Bi(1) atoms. Both Tm(2)-Co(1) bond lengths are 2.80 Å. Both Tm(2)-Bi(1) bond lengths are 3.22 Å. Co(1) is bonded in a 9-coordinate geometry to three equivalent Tm(1) and six equivalent Tm(2) atoms. Bi(1) is bonded in a 9-coordinate geometry to three equivalent Tm(2) and six equivalent Tm(1) atoms.