Tb3Eu is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Tb(1) is bonded to eight equivalent Tb(1) and four equivalent Eu(1) atoms to form TbTb8Eu4 cuboctahedra that share corners with twelve equivalent Tb(1)Tb8Eu4 cuboctahedra, edges with eight equivalent Eu(1)Tb12 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Eu4 cuboctahedra, faces with four equivalent Eu(1)Tb12 cuboctahedra, and faces with fourteen equivalent Tb(1)Tb8Eu4 cuboctahedra. Eu(1) is bonded to twelve equivalent Tb(1) atoms to form EuTb12 cuboctahedra that share corners with twelve equivalent Eu(1)Tb12 cuboctahedra, edges with twenty-four equivalent Tb(1)Tb8Eu4 cuboctahedra, faces with six equivalent Eu(1)Tb12 cuboctahedra, and faces with twelve equivalent Tb(1)Tb8Eu4 cuboctahedra.
Tb3Eu is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Tb(1) is bonded to eight equivalent Tb(1) and four equivalent Eu(1) atoms to form TbTb8Eu4 cuboctahedra that share corners with twelve equivalent Tb(1)Tb8Eu4 cuboctahedra, edges with eight equivalent Eu(1)Tb12 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Eu4 cuboctahedra, faces with four equivalent Eu(1)Tb12 cuboctahedra, and faces with fourteen equivalent Tb(1)Tb8Eu4 cuboctahedra. All Tb(1)-Tb(1) bond lengths are 3.59 Å. All Tb(1)-Eu(1) bond lengths are 3.59 Å. Eu(1) is bonded to twelve equivalent Tb(1) atoms to form EuTb12 cuboctahedra that share corners with twelve equivalent Eu(1)Tb12 cuboctahedra, edges with twenty-four equivalent Tb(1)Tb8Eu4 cuboctahedra, faces with six equivalent Eu(1)Tb12 cuboctahedra, and faces with twelve equivalent Tb(1)Tb8Eu4 cuboctahedra.