Lu3Sn is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to four equivalent Lu(1), four equivalent Lu(2), and four equivalent Sn(1) atoms to form distorted LuLu8Sn4 cuboctahedra that share corners with twelve equivalent Lu(1)Lu8Sn4 cuboctahedra, edges with eight equivalent Lu(1)Lu8Sn4 cuboctahedra, edges with eight equivalent Sn(1)Lu12 cuboctahedra, faces with four equivalent Sn(1)Lu12 cuboctahedra, and faces with ten equivalent Lu(1)Lu8Sn4 cuboctahedra. In the second Lu site, Lu(2) is bonded in a square co-planar geometry to eight equivalent Lu(1) and four equivalent Sn(1) atoms. Sn(1) is bonded to four equivalent Lu(2) and eight equivalent Lu(1) atoms to form SnLu12 cuboctahedra that share corners with four equivalent Sn(1)Lu12 cuboctahedra, edges with eight equivalent Sn(1)Lu12 cuboctahedra, edges with sixteen equivalent Lu(1)Lu8Sn4 cuboctahedra, faces with four equivalent Sn(1)Lu12 cuboctahedra, and faces with eight equivalent Lu(1)Lu8Sn4 cuboctahedra.
Lu3Sn is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to four equivalent Lu(1), four equivalent Lu(2), and four equivalent Sn(1) atoms to form distorted LuLu8Sn4 cuboctahedra that share corners with twelve equivalent Lu(1)Lu8Sn4 cuboctahedra, edges with eight equivalent Lu(1)Lu8Sn4 cuboctahedra, edges with eight equivalent Sn(1)Lu12 cuboctahedra, faces with four equivalent Sn(1)Lu12 cuboctahedra, and faces with ten equivalent Lu(1)Lu8Sn4 cuboctahedra. All Lu(1)-Lu(1) bond lengths are 3.23 Å. All Lu(1)-Lu(2) bond lengths are 3.43 Å. All Lu(1)-Sn(1) bond lengths are 3.43 Å. In the second Lu site, Lu(2) is bonded in a square co-planar geometry to eight equivalent Lu(1) and four equivalent Sn(1) atoms. All Lu(2)-Sn(1) bond lengths are 3.23 Å. Sn(1) is bonded to four equivalent Lu(2) and eight equivalent Lu(1) atoms to form SnLu12 cuboctahedra that share corners with four equivalent Sn(1)Lu12 cuboctahedra, edges with eight equivalent Sn(1)Lu12 cuboctahedra, edges with sixteen equivalent Lu(1)Lu8Sn4 cuboctahedra, faces with four equivalent Sn(1)Lu12 cuboctahedra, and faces with eight equivalent Lu(1)Lu8Sn4 cuboctahedra.