Tb2Co3Ni is Hexagonal Laves-derived structured and crystallizes in the trigonal R-3m space group. Tb(1) is bonded in a 16-coordinate geometry to four equivalent Tb(1), nine equivalent Co(1), and three equivalent Ni(1) atoms. Co(1) is bonded to six equivalent Tb(1), four equivalent Co(1), and two equivalent Ni(1) atoms to form CoTb6Co4Ni2 cuboctahedra that share corners with four equivalent Ni(1)Tb6Co6 cuboctahedra, corners with fourteen equivalent Co(1)Tb6Co4Ni2 cuboctahedra, edges with six equivalent Co(1)Tb6Co4Ni2 cuboctahedra, faces with six equivalent Ni(1)Tb6Co6 cuboctahedra, and faces with twelve equivalent Co(1)Tb6Co4Ni2 cuboctahedra. Ni(1) is bonded to six equivalent Tb(1) and six equivalent Co(1) atoms to form NiTb6Co6 cuboctahedra that share corners with six equivalent Ni(1)Tb6Co6 cuboctahedra, corners with twelve equivalent Co(1)Tb6Co4Ni2 cuboctahedra, edges with six equivalent Ni(1)Tb6Co6 cuboctahedra, and faces with eighteen equivalent Co(1)Tb6Co4Ni2 cuboctahedra.
Tb2Co3Ni is Hexagonal Laves-derived structured and crystallizes in the trigonal R-3m space group. Tb(1) is bonded in a 16-coordinate geometry to four equivalent Tb(1), nine equivalent Co(1), and three equivalent Ni(1) atoms. There are three shorter (3.11 Å) and one longer (3.16 Å) Tb(1)-Tb(1) bond length. There are six shorter (2.92 Å) and three longer (3.18 Å) Tb(1)-Co(1) bond lengths. All Tb(1)-Ni(1) bond lengths are 2.91 Å. Co(1) is bonded to six equivalent Tb(1), four equivalent Co(1), and two equivalent Ni(1) atoms to form CoTb6Co4Ni2 cuboctahedra that share corners with four equivalent Ni(1)Tb6Co6 cuboctahedra, corners with fourteen equivalent Co(1)Tb6Co4Ni2 cuboctahedra, edges with six equivalent Co(1)Tb6Co4Ni2 cuboctahedra, faces with six equivalent Ni(1)Tb6Co6 cuboctahedra, and faces with twelve equivalent Co(1)Tb6Co4Ni2 cuboctahedra. All Co(1)-Co(1) bond lengths are 2.46 Å. Both Co(1)-Ni(1) bond lengths are 2.63 Å. Ni(1) is bonded to six equivalent Tb(1) and six equivalent Co(1) atoms to form NiTb6Co6 cuboctahedra that share corners with six equivalent Ni(1)Tb6Co6 cuboctahedra, corners with twelve equivalent Co(1)Tb6Co4Ni2 cuboctahedra, edges with six equivalent Ni(1)Tb6Co6 cuboctahedra, and faces with eighteen equivalent Co(1)Tb6Co4Ni2 cuboctahedra.