Tb3Pb is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to four equivalent Tb(1), four equivalent Tb(2), and four equivalent Pb(1) atoms to form distorted TbTb8Pb4 cuboctahedra that share corners with twelve equivalent Tb(1)Tb8Pb4 cuboctahedra, edges with eight equivalent Tb(1)Tb8Pb4 cuboctahedra, edges with eight equivalent Pb(1)Tb12 cuboctahedra, faces with four equivalent Pb(1)Tb12 cuboctahedra, and faces with ten equivalent Tb(1)Tb8Pb4 cuboctahedra. In the second Tb site, Tb(2) is bonded in a square co-planar geometry to eight equivalent Tb(1) and four equivalent Pb(1) atoms. Pb(1) is bonded to four equivalent Tb(2) and eight equivalent Tb(1) atoms to form PbTb12 cuboctahedra that share corners with four equivalent Pb(1)Tb12 cuboctahedra, edges with eight equivalent Pb(1)Tb12 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Pb4 cuboctahedra, faces with four equivalent Pb(1)Tb12 cuboctahedra, and faces with eight equivalent Tb(1)Tb8Pb4 cuboctahedra.
Tb3Pb is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to four equivalent Tb(1), four equivalent Tb(2), and four equivalent Pb(1) atoms to form distorted TbTb8Pb4 cuboctahedra that share corners with twelve equivalent Tb(1)Tb8Pb4 cuboctahedra, edges with eight equivalent Tb(1)Tb8Pb4 cuboctahedra, edges with eight equivalent Pb(1)Tb12 cuboctahedra, faces with four equivalent Pb(1)Tb12 cuboctahedra, and faces with ten equivalent Tb(1)Tb8Pb4 cuboctahedra. All Tb(1)-Tb(1) bond lengths are 3.35 Å. All Tb(1)-Tb(2) bond lengths are 3.53 Å. All Tb(1)-Pb(1) bond lengths are 3.53 Å. In the second Tb site, Tb(2) is bonded in a square co-planar geometry to eight equivalent Tb(1) and four equivalent Pb(1) atoms. All Tb(2)-Pb(1) bond lengths are 3.35 Å. Pb(1) is bonded to four equivalent Tb(2) and eight equivalent Tb(1) atoms to form PbTb12 cuboctahedra that share corners with four equivalent Pb(1)Tb12 cuboctahedra, edges with eight equivalent Pb(1)Tb12 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Pb4 cuboctahedra, faces with four equivalent Pb(1)Tb12 cuboctahedra, and faces with eight equivalent Tb(1)Tb8Pb4 cuboctahedra.