OsIr4 is Copper-derived structured and crystallizes in the trigonal R-3m space group. Os(1) is bonded to six equivalent Os(1) and six equivalent Ir(1) atoms to form OsIr6Os6 cuboctahedra that share corners with six equivalent Os(1)Ir6Os6 cuboctahedra; corners with six Ir(2,2)Ir12 cuboctahedra; edges with six equivalent Os(1)Ir6Os6 cuboctahedra; edges with six Ir(2,2)Ir12 cuboctahedra; edges with twelve equivalent Ir(1)Ir9Os3 cuboctahedra; faces with six equivalent Os(1)Ir6Os6 cuboctahedra; and faces with twelve equivalent Ir(1)Ir9Os3 cuboctahedra. There are five inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to three equivalent Os(1), three equivalent Ir(2), and six equivalent Ir(1) atoms to form IrIr9Os3 cuboctahedra that share corners with three equivalent Ir(2)Ir12 cuboctahedra; corners with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with six equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine Ir(2,2)Ir12 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; faces with six equivalent Os(1)Ir6Os6 cuboctahedra; faces with six equivalent Ir(2)Ir12 cuboctahedra; and faces with six equivalent Ir(1)Ir9Os3 cuboctahedra. In the second Ir site, Ir(2) is bonded to three equivalent Ir(1) and nine Ir(2,2) atoms to form IrIr12 cuboctahedra that share corners with three equivalent Os(1)Ir6Os6 cuboctahedra; corners with three equivalent Ir(1)Ir9Os3 cuboctahedra; corners with six equivalent Ir(2)Ir12 cuboctahedra; edges with three equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with twelve Ir(2,2)Ir12 cuboctahedra; faces with six equivalent Ir(1)Ir9Os3 cuboctahedra; and faces with twelve Ir(2,2)Ir12 cuboctahedra. In the third Ir site, Ir(2) is bonded to three equivalent Ir(1) and nine Ir(2,2) atoms to form IrIr12 cuboctahedra that share corners with three equivalent Os(1)Ir6Os6 cuboctahedra; corners with three equivalent Ir(1)Ir9Os3 cuboctahedra; corners with six equivalent Ir(2)Ir12 cuboctahedra; edges with three equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with twelve Ir(2,2)Ir12 cuboctahedra; faces with six equivalent Ir(1)Ir9Os3 cuboctahedra; and faces with twelve Ir(2,2)Ir12 cuboctahedra. In the fourth Ir site, Ir(2) is bonded to three equivalent Ir(1) and nine Ir(2,2) atoms to form IrIr12 cuboctahedra that share corners with three equivalent Os(1)Ir6Os6 cuboctahedra; corners with three equivalent Ir(1)Ir9Os3 cuboctahedra; corners with six equivalent Ir(2)Ir12 cuboctahedra; edges with three equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with twelve Ir(2,2)Ir12 cuboctahedra; faces with six equivalent Ir(1)Ir9Os3 cuboctahedra; and faces with twelve Ir(2,2)Ir12 cuboctahedra. In the fifth Ir site, Ir(2) is bonded to three equivalent Ir(1) and nine Ir(2,2) atoms to form IrIr12 cuboctahedra that share corners with three equivalent Os(1)Ir6Os6 cuboctahedra; corners with three equivalent Ir(1)Ir9Os3 cuboctahedra; corners with six equivalent Ir(2)Ir12 cuboctahedra; edges with three equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with twelve Ir(2,2)Ir12 cuboctahedra; faces with six equivalent Ir(1)Ir9Os3 cuboctahedra; and faces with twelve Ir(2,2)Ir12 cuboctahedra.
OsIr4 is Copper-derived structured and crystallizes in the trigonal R-3m space group. Os(1) is bonded to six equivalent Os(1) and six equivalent Ir(1) atoms to form OsIr6Os6 cuboctahedra that share corners with six equivalent Os(1)Ir6Os6 cuboctahedra; corners with six Ir(2,2)Ir12 cuboctahedra; edges with six equivalent Os(1)Ir6Os6 cuboctahedra; edges with six Ir(2,2)Ir12 cuboctahedra; edges with twelve equivalent Ir(1)Ir9Os3 cuboctahedra; faces with six equivalent Os(1)Ir6Os6 cuboctahedra; and faces with twelve equivalent Ir(1)Ir9Os3 cuboctahedra. All Os(1)-Os(1) bond lengths are 2.74 Å. All Os(1)-Ir(1) bond lengths are 2.72 Å. There are five inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to three equivalent Os(1), three equivalent Ir(2), and six equivalent Ir(1) atoms to form IrIr9Os3 cuboctahedra that share corners with three equivalent Ir(2)Ir12 cuboctahedra; corners with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with six equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine Ir(2,2)Ir12 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; faces with six equivalent Os(1)Ir6Os6 cuboctahedra; faces with six equivalent Ir(2)Ir12 cuboctahedra; and faces with six equivalent Ir(1)Ir9Os3 cuboctahedra. All Ir(1)-Ir(2) bond lengths are 2.77 Å. All Ir(1)-Ir(1) bond lengths are 2.74 Å. In the second Ir site, Ir(2) is bonded to three equivalent Ir(1) and nine Ir(2,2) atoms to form IrIr12 cuboctahedra that share corners with three equivalent Os(1)Ir6Os6 cuboctahedra; corners with three equivalent Ir(1)Ir9Os3 cuboctahedra; corners with six equivalent Ir(2)Ir12 cuboctahedra; edges with three equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with twelve Ir(2,2)Ir12 cuboctahedra; faces with six equivalent Ir(1)Ir9Os3 cuboctahedra; and faces with twelve Ir(2,2)Ir12 cuboctahedra. There are three shorter (2.72 Å) and six longer (2.74 Å) Ir(2)-Ir(2,2) bond lengths. In the third Ir site, Ir(2) is bonded to three equivalent Ir(1) and nine Ir(2,2) atoms to form IrIr12 cuboctahedra that share corners with three equivalent Os(1)Ir6Os6 cuboctahedra; corners with three equivalent Ir(1)Ir9Os3 cuboctahedra; corners with six equivalent Ir(2)Ir12 cuboctahedra; edges with three equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with twelve Ir(2,2)Ir12 cuboctahedra; faces with six equivalent Ir(1)Ir9Os3 cuboctahedra; and faces with twelve Ir(2,2)Ir12 cuboctahedra. All Ir(2)-Ir(1) bond lengths are 2.77 Å. All Ir(2)-Ir(2) bond lengths are 2.74 Å. In the fourth Ir site, Ir(2) is bonded to three equivalent Ir(1) and nine Ir(2,2) atoms to form IrIr12 cuboctahedra that share corners with three equivalent Os(1)Ir6Os6 cuboctahedra; corners with three equivalent Ir(1)Ir9Os3 cuboctahedra; corners with six equivalent Ir(2)Ir12 cuboctahedra; edges with three equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with twelve Ir(2,2)Ir12 cuboctahedra; faces with six equivalent Ir(1)Ir9Os3 cuboctahedra; and faces with twelve Ir(2,2)Ir12 cuboctahedra. All Ir(2)-Ir(1) bond lengths are 2.77 Å. There are three shorter (2.72 Å) and six longer (2.74 Å) Ir(2)-Ir(2,2) bond lengths. In the fifth Ir site, Ir(2) is bonded to three equivalent Ir(1) and nine Ir(2,2) atoms to form IrIr12 cuboctahedra that share corners with three equivalent Os(1)Ir6Os6 cuboctahedra; corners with three equivalent Ir(1)Ir9Os3 cuboctahedra; corners with six equivalent Ir(2)Ir12 cuboctahedra; edges with three equivalent Os(1)Ir6Os6 cuboctahedra; edges with nine equivalent Ir(1)Ir9Os3 cuboctahedra; edges with twelve Ir(2,2)Ir12 cuboctahedra; faces with six equivalent Ir(1)Ir9Os3 cuboctahedra; and faces with twelve Ir(2,2)Ir12 cuboctahedra. All Ir(2)-Ir(1) bond lengths are 2.77 Å. All Ir(2)-Ir(2) bond lengths are 2.74 Å.