Sn2(PtPd)3 crystallizes in the orthorhombic Pmmm space group. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent Pt(3), four equivalent Pd(1), and four equivalent Sn(1) atoms to form PtSn4Pd4Pt4 cuboctahedra that share corners with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, corners with eight equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pt(2)Sn4Pd8 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, and faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra. In the second Pt site, Pt(2) is bonded to four equivalent Pd(1), four equivalent Pd(2), and four equivalent Sn(1) atoms to form PtSn4Pd8 cuboctahedra that share corners with four equivalent Pt(2)Sn4Pd8 cuboctahedra, corners with eight equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, faces with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, and faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra. In the third Pt site, Pt(3) is bonded to four equivalent Pt(1), four equivalent Pd(1), and four equivalent Sn(1) atoms to form PtSn4Pd4Pt4 cuboctahedra that share corners with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, corners with eight equivalent Pt(2)Sn4Pd8 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with eight equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, and faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), two equivalent Pd(2), and four equivalent Sn(1) atoms to form PdSn4Pd2Pt6 cuboctahedra that share corners with twelve equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, edges with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, edges with four equivalent Pt(2)Sn4Pd8 cuboctahedra, edges with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with two equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with two equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with two equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra, and faces with six equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra. In the second Pd site, Pd(2) is bonded to four equivalent Pt(2), four equivalent Pd(1), and four equivalent Sn(1) atoms to form PdSn4Pd4Pt4 cuboctahedra that share corners with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, corners with eight equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, faces with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, and faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra. Sn(1) is bonded to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), two equivalent Pd(2), and four equivalent Pd(1) atoms to form SnPd6Pt6 cuboctahedra that share corners with twelve equivalent Sn(1)Pd6Pt6 cuboctahedra, edges with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, edges with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, edges with four equivalent Pt(2)Sn4Pd8 cuboctahedra, edges with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, faces with two equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with two equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with two equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with two equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, and faces with six equivalent Sn(1)Pd6Pt6 cuboctahedra.
Sn2(PtPd)3 crystallizes in the orthorhombic Pmmm space group. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent Pt(3), four equivalent Pd(1), and four equivalent Sn(1) atoms to form PtSn4Pd4Pt4 cuboctahedra that share corners with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, corners with eight equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pt(2)Sn4Pd8 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, and faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra. All Pt(1)-Pt(3) bond lengths are 2.84 Å. All Pt(1)-Pd(1) bond lengths are 2.84 Å. All Pt(1)-Sn(1) bond lengths are 2.85 Å. In the second Pt site, Pt(2) is bonded to four equivalent Pd(1), four equivalent Pd(2), and four equivalent Sn(1) atoms to form PtSn4Pd8 cuboctahedra that share corners with four equivalent Pt(2)Sn4Pd8 cuboctahedra, corners with eight equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, faces with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, and faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra. All Pt(2)-Pd(1) bond lengths are 2.84 Å. All Pt(2)-Pd(2) bond lengths are 2.84 Å. All Pt(2)-Sn(1) bond lengths are 2.83 Å. In the third Pt site, Pt(3) is bonded to four equivalent Pt(1), four equivalent Pd(1), and four equivalent Sn(1) atoms to form PtSn4Pd4Pt4 cuboctahedra that share corners with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, corners with eight equivalent Pt(2)Sn4Pd8 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with eight equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, and faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra. All Pt(3)-Pd(1) bond lengths are 2.84 Å. All Pt(3)-Sn(1) bond lengths are 2.85 Å. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), two equivalent Pd(2), and four equivalent Sn(1) atoms to form PdSn4Pd2Pt6 cuboctahedra that share corners with twelve equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, edges with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, edges with four equivalent Pt(2)Sn4Pd8 cuboctahedra, edges with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with two equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with two equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with two equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra, and faces with six equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra. Both Pd(1)-Pd(2) bond lengths are 2.84 Å. All Pd(1)-Sn(1) bond lengths are 2.84 Å. In the second Pd site, Pd(2) is bonded to four equivalent Pt(2), four equivalent Pd(1), and four equivalent Sn(1) atoms to form PdSn4Pd4Pt4 cuboctahedra that share corners with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, corners with eight equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, edges with eight equivalent Sn(1)Pd6Pt6 cuboctahedra, faces with two equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, faces with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, and faces with four equivalent Sn(1)Pd6Pt6 cuboctahedra. All Pd(2)-Sn(1) bond lengths are 2.83 Å. Sn(1) is bonded to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), two equivalent Pd(2), and four equivalent Pd(1) atoms to form SnPd6Pt6 cuboctahedra that share corners with twelve equivalent Sn(1)Pd6Pt6 cuboctahedra, edges with four equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, edges with four equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, edges with four equivalent Pt(2)Sn4Pd8 cuboctahedra, edges with four equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, edges with eight equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, faces with two equivalent Pt(1)Sn4Pd4Pt4 cuboctahedra, faces with two equivalent Pt(3)Sn4Pd4Pt4 cuboctahedra, faces with two equivalent Pt(2)Sn4Pd8 cuboctahedra, faces with two equivalent Pd(2)Sn4Pd4Pt4 cuboctahedra, faces with four equivalent Pd(1)Sn4Pd2Pt6 cuboctahedra, and faces with six equivalent Sn(1)Pd6Pt6 cuboctahedra.