PtIr crystallizes in the trigonal R-3m space group. Ir(1) is bonded to six equivalent Ir(1) and six equivalent Pt(1) atoms to form IrIr6Pt6 cuboctahedra that share corners with twelve equivalent Ir(1)Ir6Pt6 cuboctahedra, edges with twelve equivalent Ir(1)Ir6Pt6 cuboctahedra, edges with twelve equivalent Pt(1)Ir6Pt6 cuboctahedra, faces with six equivalent Ir(1)Ir6Pt6 cuboctahedra, and faces with twelve equivalent Pt(1)Ir6Pt6 cuboctahedra. Pt(1) is bonded to six equivalent Ir(1) and six equivalent Pt(1) atoms to form PtIr6Pt6 cuboctahedra that share corners with twelve equivalent Pt(1)Ir6Pt6 cuboctahedra, edges with twelve equivalent Ir(1)Ir6Pt6 cuboctahedra, edges with twelve equivalent Pt(1)Ir6Pt6 cuboctahedra, faces with six equivalent Pt(1)Ir6Pt6 cuboctahedra, and faces with twelve equivalent Ir(1)Ir6Pt6 cuboctahedra.
PtIr crystallizes in the trigonal R-3m space group. Ir(1) is bonded to six equivalent Ir(1) and six equivalent Pt(1) atoms to form IrIr6Pt6 cuboctahedra that share corners with twelve equivalent Ir(1)Ir6Pt6 cuboctahedra, edges with twelve equivalent Ir(1)Ir6Pt6 cuboctahedra, edges with twelve equivalent Pt(1)Ir6Pt6 cuboctahedra, faces with six equivalent Ir(1)Ir6Pt6 cuboctahedra, and faces with twelve equivalent Pt(1)Ir6Pt6 cuboctahedra. All Ir(1)-Ir(1) bond lengths are 2.78 Å. All Ir(1)-Pt(1) bond lengths are 2.77 Å. Pt(1) is bonded to six equivalent Ir(1) and six equivalent Pt(1) atoms to form PtIr6Pt6 cuboctahedra that share corners with twelve equivalent Pt(1)Ir6Pt6 cuboctahedra, edges with twelve equivalent Ir(1)Ir6Pt6 cuboctahedra, edges with twelve equivalent Pt(1)Ir6Pt6 cuboctahedra, faces with six equivalent Pt(1)Ir6Pt6 cuboctahedra, and faces with twelve equivalent Ir(1)Ir6Pt6 cuboctahedra. All Pt(1)-Pt(1) bond lengths are 2.78 Å.