Tb6FeBi2 crystallizes in the hexagonal P-62m space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 4-coordinate geometry to two equivalent Fe(1) and two equivalent Bi(1) atoms. In the second Tb site, Tb(2) is bonded in a 5-coordinate geometry to one Fe(1) and four equivalent Bi(1) atoms. Fe(1) is bonded in a 9-coordinate geometry to three equivalent Tb(2) and six equivalent Tb(1) atoms. Bi(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Tb(2) atoms.
Tb6FeBi2 crystallizes in the hexagonal P-62m space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 4-coordinate geometry to two equivalent Fe(1) and two equivalent Bi(1) atoms. Both Tb(1)-Fe(1) bond lengths are 2.84 Å. Both Tb(1)-Bi(1) bond lengths are 3.32 Å. In the second Tb site, Tb(2) is bonded in a 5-coordinate geometry to one Fe(1) and four equivalent Bi(1) atoms. The Tb(2)-Fe(1) bond length is 3.30 Å. All Tb(2)-Bi(1) bond lengths are 3.32 Å. Fe(1) is bonded in a 9-coordinate geometry to three equivalent Tb(2) and six equivalent Tb(1) atoms. Bi(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Tb(2) atoms.