CuC2H(N2O)2 crystallizes in the orthorhombic P2_12_12_1 space group. Cu(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one N(3) atom. The Cu(1)-N(1) bond length is 1.95 Å. The Cu(1)-N(2) bond length is 1.92 Å. The Cu(1)-N(3) bond length is 1.97 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(2), one N(3), and one N(4) atom. The C(1)-N(2) bond length is 1.35 Å. The C(1)-N(3) bond length is 1.36 Å. The C(1)-N(4) bond length is 1.41 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(1), one N(3), and one H(1) atom. The C(2)-N(1) bond length is 1.35 Å. The C(2)-N(3) bond length is 1.34 Å. The C(2)-H(1) bond length is 1.08 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Cu(1), one C(2), and one N(2) atom. The N(1)-N(2) bond length is 1.36 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(1), and one N(1) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(1), and one C(2) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(1), one O(1), and one O(2) atom. The N(4)-O(1) bond length is 1.25 Å. The N(4)-O(2) bond length is 1.25 Å. H(1) is bonded in a single-bond geometry to one C(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one N(4) atom. In the second O site, O(2) is bonded in a single-bond geometry to one N(4) atom. Linkers: 2 O=[N+]([O-])C1=N[N]C=N1 ,1 O=N(=O)C1=[N]=CN=N1. Metal clusters: 4 [Cu]. The MOF has largest included sphere 1.91 A, density 2.46 g/cm3, surface area 2733.77 m2/g, accessible volume 0.08 cm3/g