Ir3Cr is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Cr(1) is bonded to twelve equivalent Ir(1) atoms to form CrIr12 cuboctahedra that share corners with twelve equivalent Cr(1)Ir12 cuboctahedra, edges with twenty-four equivalent Ir(1)Cr4Ir8 cuboctahedra, faces with six equivalent Cr(1)Ir12 cuboctahedra, and faces with twelve equivalent Ir(1)Cr4Ir8 cuboctahedra. Ir(1) is bonded to four equivalent Cr(1) and eight equivalent Ir(1) atoms to form distorted IrCr4Ir8 cuboctahedra that share corners with twelve equivalent Ir(1)Cr4Ir8 cuboctahedra, edges with eight equivalent Cr(1)Ir12 cuboctahedra, edges with sixteen equivalent Ir(1)Cr4Ir8 cuboctahedra, faces with four equivalent Cr(1)Ir12 cuboctahedra, and faces with fourteen equivalent Ir(1)Cr4Ir8 cuboctahedra.
Ir3Cr is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Cr(1) is bonded to twelve equivalent Ir(1) atoms to form CrIr12 cuboctahedra that share corners with twelve equivalent Cr(1)Ir12 cuboctahedra, edges with twenty-four equivalent Ir(1)Cr4Ir8 cuboctahedra, faces with six equivalent Cr(1)Ir12 cuboctahedra, and faces with twelve equivalent Ir(1)Cr4Ir8 cuboctahedra. All Cr(1)-Ir(1) bond lengths are 2.70 Å. Ir(1) is bonded to four equivalent Cr(1) and eight equivalent Ir(1) atoms to form distorted IrCr4Ir8 cuboctahedra that share corners with twelve equivalent Ir(1)Cr4Ir8 cuboctahedra, edges with eight equivalent Cr(1)Ir12 cuboctahedra, edges with sixteen equivalent Ir(1)Cr4Ir8 cuboctahedra, faces with four equivalent Cr(1)Ir12 cuboctahedra, and faces with fourteen equivalent Ir(1)Cr4Ir8 cuboctahedra. All Ir(1)-Ir(1) bond lengths are 2.70 Å.