YbTb3 is Copper-derived structured and crystallizes in the tetragonal I4/mmm space group. Yb(1) is bonded to four equivalent Tb(2) and eight equivalent Tb(1) atoms to form YbTb12 cuboctahedra that share corners with four equivalent Yb(1)Tb12 cuboctahedra, corners with eight equivalent Tb(2)Tb8Yb4 cuboctahedra, edges with eight equivalent Yb(1)Tb12 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Yb4 cuboctahedra, faces with four equivalent Yb(1)Tb12 cuboctahedra, faces with six equivalent Tb(2)Tb8Yb4 cuboctahedra, and faces with eight equivalent Tb(1)Tb8Yb4 cuboctahedra. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to four equivalent Yb(1), four equivalent Tb(1), and four equivalent Tb(2) atoms to form TbTb8Yb4 cuboctahedra that share corners with twelve equivalent Tb(1)Tb8Yb4 cuboctahedra, edges with eight equivalent Yb(1)Tb12 cuboctahedra, edges with eight equivalent Tb(1)Tb8Yb4 cuboctahedra, edges with eight equivalent Tb(2)Tb8Yb4 cuboctahedra, faces with four equivalent Yb(1)Tb12 cuboctahedra, faces with four equivalent Tb(2)Tb8Yb4 cuboctahedra, and faces with ten equivalent Tb(1)Tb8Yb4 cuboctahedra. In the second Tb site, Tb(2) is bonded to four equivalent Yb(1) and eight equivalent Tb(1) atoms to form TbTb8Yb4 cuboctahedra that share corners with four equivalent Tb(2)Tb8Yb4 cuboctahedra, corners with eight equivalent Yb(1)Tb12 cuboctahedra, edges with eight equivalent Tb(2)Tb8Yb4 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Yb4 cuboctahedra, faces with four equivalent Tb(2)Tb8Yb4 cuboctahedra, faces with six equivalent Yb(1)Tb12 cuboctahedra, and faces with eight equivalent Tb(1)Tb8Yb4 cuboctahedra.
YbTb3 is Copper-derived structured and crystallizes in the tetragonal I4/mmm space group. Yb(1) is bonded to four equivalent Tb(2) and eight equivalent Tb(1) atoms to form YbTb12 cuboctahedra that share corners with four equivalent Yb(1)Tb12 cuboctahedra, corners with eight equivalent Tb(2)Tb8Yb4 cuboctahedra, edges with eight equivalent Yb(1)Tb12 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Yb4 cuboctahedra, faces with four equivalent Yb(1)Tb12 cuboctahedra, faces with six equivalent Tb(2)Tb8Yb4 cuboctahedra, and faces with eight equivalent Tb(1)Tb8Yb4 cuboctahedra. All Yb(1)-Tb(2) bond lengths are 3.59 Å. All Yb(1)-Tb(1) bond lengths are 3.60 Å. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to four equivalent Yb(1), four equivalent Tb(1), and four equivalent Tb(2) atoms to form TbTb8Yb4 cuboctahedra that share corners with twelve equivalent Tb(1)Tb8Yb4 cuboctahedra, edges with eight equivalent Yb(1)Tb12 cuboctahedra, edges with eight equivalent Tb(1)Tb8Yb4 cuboctahedra, edges with eight equivalent Tb(2)Tb8Yb4 cuboctahedra, faces with four equivalent Yb(1)Tb12 cuboctahedra, faces with four equivalent Tb(2)Tb8Yb4 cuboctahedra, and faces with ten equivalent Tb(1)Tb8Yb4 cuboctahedra. All Tb(1)-Tb(1) bond lengths are 3.59 Å. All Tb(1)-Tb(2) bond lengths are 3.60 Å. In the second Tb site, Tb(2) is bonded to four equivalent Yb(1) and eight equivalent Tb(1) atoms to form TbTb8Yb4 cuboctahedra that share corners with four equivalent Tb(2)Tb8Yb4 cuboctahedra, corners with eight equivalent Yb(1)Tb12 cuboctahedra, edges with eight equivalent Tb(2)Tb8Yb4 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Yb4 cuboctahedra, faces with four equivalent Tb(2)Tb8Yb4 cuboctahedra, faces with six equivalent Yb(1)Tb12 cuboctahedra, and faces with eight equivalent Tb(1)Tb8Yb4 cuboctahedra.