Ho3Tb is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ho(1) is bonded to eight equivalent Ho(1) and four equivalent Tb(1) atoms to form HoTb4Ho8 cuboctahedra that share corners with twelve equivalent Ho(1)Tb4Ho8 cuboctahedra, edges with eight equivalent Tb(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Tb4Ho8 cuboctahedra, faces with four equivalent Tb(1)Ho12 cuboctahedra, and faces with fourteen equivalent Ho(1)Tb4Ho8 cuboctahedra. Tb(1) is bonded to twelve equivalent Ho(1) atoms to form TbHo12 cuboctahedra that share corners with twelve equivalent Tb(1)Ho12 cuboctahedra, edges with twenty-four equivalent Ho(1)Tb4Ho8 cuboctahedra, faces with six equivalent Tb(1)Ho12 cuboctahedra, and faces with twelve equivalent Ho(1)Tb4Ho8 cuboctahedra.
Ho3Tb is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ho(1) is bonded to eight equivalent Ho(1) and four equivalent Tb(1) atoms to form HoTb4Ho8 cuboctahedra that share corners with twelve equivalent Ho(1)Tb4Ho8 cuboctahedra, edges with eight equivalent Tb(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Tb4Ho8 cuboctahedra, faces with four equivalent Tb(1)Ho12 cuboctahedra, and faces with fourteen equivalent Ho(1)Tb4Ho8 cuboctahedra. All Ho(1)-Ho(1) bond lengths are 3.54 Å. All Ho(1)-Tb(1) bond lengths are 3.54 Å. Tb(1) is bonded to twelve equivalent Ho(1) atoms to form TbHo12 cuboctahedra that share corners with twelve equivalent Tb(1)Ho12 cuboctahedra, edges with twenty-four equivalent Ho(1)Tb4Ho8 cuboctahedra, faces with six equivalent Tb(1)Ho12 cuboctahedra, and faces with twelve equivalent Ho(1)Tb4Ho8 cuboctahedra.