TbMnGa crystallizes in the hexagonal P-62m space group. Tb(1) is bonded in a 11-coordinate geometry to one Mn(2), four equivalent Mn(1), and six equivalent Ga(1) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 9-coordinate geometry to six equivalent Tb(1) and three equivalent Ga(1) atoms. In the second Mn site, Mn(2) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Ga(1) atoms. Ga(1) is bonded in a 10-coordinate geometry to six equivalent Tb(1), two equivalent Mn(1), and two equivalent Mn(2) atoms.
TbMnGa crystallizes in the hexagonal P-62m space group. Tb(1) is bonded in a 11-coordinate geometry to one Mn(2), four equivalent Mn(1), and six equivalent Ga(1) atoms. The Tb(1)-Mn(2) bond length is 3.01 Å. All Tb(1)-Mn(1) bond lengths are 2.93 Å. There are two shorter (3.09 Å) and four longer (3.27 Å) Tb(1)-Ga(1) bond lengths. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 9-coordinate geometry to six equivalent Tb(1) and three equivalent Ga(1) atoms. All Mn(1)-Ga(1) bond lengths are 2.75 Å. In the second Mn site, Mn(2) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Ga(1) atoms. All Mn(2)-Ga(1) bond lengths are 2.70 Å. Ga(1) is bonded in a 10-coordinate geometry to six equivalent Tb(1), two equivalent Mn(1), and two equivalent Mn(2) atoms.