CuC4H6(N3O)4 is Indium-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of two CuC4H6(N3O)4 clusters. Cu(1) is bonded in a square co-planar geometry to two equivalent N(6) and two equivalent O(2) atoms. Both Cu(1)-N(6) bond lengths are 1.91 Å. Both Cu(1)-O(2) bond lengths are 2.01 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a tetrahedral geometry to one N(5), one H(1), one H(2), and one H(3) atom. The C(1)-N(5) bond length is 1.45 Å. The C(1)-H(1) bond length is 1.09 Å. The C(1)-H(2) bond length is 1.10 Å. The C(1)-H(3) bond length is 1.09 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(2), one N(5), and one N(6) atom. The C(2)-N(2) bond length is 1.35 Å. The C(2)-N(5) bond length is 1.36 Å. The C(2)-N(6) bond length is 1.35 Å. There are six inequivalent N sites. In the first N site, N(4) is bonded in a water-like geometry to one N(1) and one N(5) atom. The N(4)-N(1) bond length is 1.29 Å. The N(4)-N(5) bond length is 1.35 Å. In the second N site, N(5) is bonded in a distorted trigonal planar geometry to one C(1), one C(2), and one N(4) atom. In the third N site, N(6) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(2), and one N(1) atom. The N(6)-N(1) bond length is 1.36 Å. In the fourth N site, N(1) is bonded in a water-like geometry to one N(4) and one N(6) atom. In the fifth N site, N(2) is bonded in a distorted bent 120 degrees geometry to one C(2) and one N(3) atom. The N(2)-N(3) bond length is 1.31 Å. In the sixth N site, N(3) is bonded in a distorted trigonal planar geometry to one N(2), one O(1), and one O(2) atom. The N(3)-O(1) bond length is 1.25 Å. The N(3)-O(2) bond length is 1.31 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one N(3) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(1) and one N(3) atom. Linkers: 2 Cn1nnnc1[N][N+](=O)[O-]. Metal clusters: 1 [O][N]O[Cu]O[N][O]. The MOF has largest included sphere 1.50 A, density 2.04 g/cm3, surface area 4142.45 m2/g, accessible volume 0.07 cm3/g