Tb3(Ni3Ga)2 crystallizes in the cubic Im-3m space group. Tb(1) is bonded in a 12-coordinate geometry to eight equivalent Ni(1) and four equivalent Ga(1) atoms. Ni(1) is bonded in a 12-coordinate geometry to four equivalent Tb(1), six equivalent Ni(1), and two equivalent Ga(1) atoms. Ga(1) is bonded to six equivalent Tb(1) and six equivalent Ni(1) atoms to form a mixture of face and corner-sharing GaTb6Ni6 cuboctahedra.
Tb3(Ni3Ga)2 crystallizes in the cubic Im-3m space group. Tb(1) is bonded in a 12-coordinate geometry to eight equivalent Ni(1) and four equivalent Ga(1) atoms. There are four shorter (2.78 Å) and four longer (3.05 Å) Tb(1)-Ni(1) bond lengths. All Tb(1)-Ga(1) bond lengths are 3.18 Å. Ni(1) is bonded in a 12-coordinate geometry to four equivalent Tb(1), six equivalent Ni(1), and two equivalent Ga(1) atoms. There are four shorter (2.58 Å) and two longer (2.90 Å) Ni(1)-Ni(1) bond lengths. Both Ni(1)-Ga(1) bond lengths are 2.49 Å. Ga(1) is bonded to six equivalent Tb(1) and six equivalent Ni(1) atoms to form a mixture of face and corner-sharing GaTb6Ni6 cuboctahedra.