IrZn2N3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. Ir(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form IrN4 tetrahedra that share corners with two equivalent Ir(1)N4 tetrahedra and corners with ten equivalent Zn(1)N4 tetrahedra. Zn(1) is bonded to one N(2) and three equivalent N(1) atoms to form ZnN4 tetrahedra that share corners with five equivalent Ir(1)N4 tetrahedra and corners with seven equivalent Zn(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Ir(1) and three equivalent Zn(1) atoms to form NZn3Ir tetrahedra that share corners with five equivalent N(2)Zn2Ir2 tetrahedra and corners with seven equivalent N(1)Zn3Ir tetrahedra. In the second N site, N(2) is bonded to two equivalent Ir(1) and two equivalent Zn(1) atoms to form NZn2Ir2 tetrahedra that share corners with two equivalent N(2)Zn2Ir2 tetrahedra and corners with ten equivalent N(1)Zn3Ir tetrahedra.
IrZn2N3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. Ir(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form IrN4 tetrahedra that share corners with two equivalent Ir(1)N4 tetrahedra and corners with ten equivalent Zn(1)N4 tetrahedra. Both Ir(1)-N(1) bond lengths are 1.92 Å. There is one shorter (1.93 Å) and one longer (1.99 Å) Ir(1)-N(2) bond length. Zn(1) is bonded to one N(2) and three equivalent N(1) atoms to form ZnN4 tetrahedra that share corners with five equivalent Ir(1)N4 tetrahedra and corners with seven equivalent Zn(1)N4 tetrahedra. The Zn(1)-N(2) bond length is 2.15 Å. All Zn(1)-N(1) bond lengths are 2.03 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Ir(1) and three equivalent Zn(1) atoms to form NZn3Ir tetrahedra that share corners with five equivalent N(2)Zn2Ir2 tetrahedra and corners with seven equivalent N(1)Zn3Ir tetrahedra. In the second N site, N(2) is bonded to two equivalent Ir(1) and two equivalent Zn(1) atoms to form NZn2Ir2 tetrahedra that share corners with two equivalent N(2)Zn2Ir2 tetrahedra and corners with ten equivalent N(1)Zn3Ir tetrahedra.