CdSn3 crystallizes in the tetragonal I4/mmm space group. Cd(1) is bonded to four equivalent Sn(2) and eight equivalent Sn(1) atoms to form CdSn12 cuboctahedra that share corners with four equivalent Cd(1)Sn12 cuboctahedra, edges with eight equivalent Cd(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)Cd4Sn8 cuboctahedra, faces with four equivalent Cd(1)Sn12 cuboctahedra, and faces with eight equivalent Sn(1)Cd4Sn8 cuboctahedra. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to four equivalent Cd(1), four equivalent Sn(1), and four equivalent Sn(2) atoms to form distorted SnCd4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)Cd4Sn8 cuboctahedra, edges with eight equivalent Cd(1)Sn12 cuboctahedra, edges with eight equivalent Sn(1)Cd4Sn8 cuboctahedra, faces with four equivalent Cd(1)Sn12 cuboctahedra, and faces with ten equivalent Sn(1)Cd4Sn8 cuboctahedra. In the second Sn site, Sn(2) is bonded in a square co-planar geometry to four equivalent Cd(1) and eight equivalent Sn(1) atoms.
CdSn3 crystallizes in the tetragonal I4/mmm space group. Cd(1) is bonded to four equivalent Sn(2) and eight equivalent Sn(1) atoms to form CdSn12 cuboctahedra that share corners with four equivalent Cd(1)Sn12 cuboctahedra, edges with eight equivalent Cd(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)Cd4Sn8 cuboctahedra, faces with four equivalent Cd(1)Sn12 cuboctahedra, and faces with eight equivalent Sn(1)Cd4Sn8 cuboctahedra. All Cd(1)-Sn(2) bond lengths are 3.18 Å. All Cd(1)-Sn(1) bond lengths are 3.44 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to four equivalent Cd(1), four equivalent Sn(1), and four equivalent Sn(2) atoms to form distorted SnCd4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)Cd4Sn8 cuboctahedra, edges with eight equivalent Cd(1)Sn12 cuboctahedra, edges with eight equivalent Sn(1)Cd4Sn8 cuboctahedra, faces with four equivalent Cd(1)Sn12 cuboctahedra, and faces with ten equivalent Sn(1)Cd4Sn8 cuboctahedra. All Sn(1)-Sn(1) bond lengths are 3.18 Å. All Sn(1)-Sn(2) bond lengths are 3.44 Å. In the second Sn site, Sn(2) is bonded in a square co-planar geometry to four equivalent Cd(1) and eight equivalent Sn(1) atoms.