CuC5H7(N2O)2 crystallizes in the monoclinic P2_1/c space group. Cu(1) is bonded to one N(1), one N(2), one N(4), one O(1), and one O(2) atom to form CuN3O2 square pyramids that share  a cornercorner with one C(5)H3O tetrahedra. The Cu(1)-N(1) bond length is 1.99 Å. The Cu(1)-N(2) bond length is 1.96 Å. The Cu(1)-N(4) bond length is 1.94 Å. The Cu(1)-O(1) bond length is 1.97 Å. The Cu(1)-O(2) bond length is 2.32 Å. There are five inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one O(1) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-N(1) bond length is 1.32 Å. The C(1)-O(1) bond length is 1.31 Å. In the second C site, C(2) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one H(2), one H(3), and one H(4) atom. The C(2)-H(2) bond length is 1.10 Å. The C(2)-H(3) bond length is 1.09 Å. The C(2)-H(4) bond length is 1.09 Å. In the third C site, C(3) is bonded in a linear geometry to one N(2) and one N(3) atom. The C(3)-N(2) bond length is 1.18 Å. The C(3)-N(3) bond length is 1.29 Å. In the fourth C site, C(4) is bonded in a linear geometry to one N(3) and one N(4) atom. The C(4)-N(3) bond length is 1.29 Å. The C(4)-N(4) bond length is 1.18 Å. In the fifth C site, C(5) is bonded to one H(5), one H(6), one H(7), and one O(2) atom to form CH3O tetrahedra that share  a cornercorner with one Cu(1)N3O2 square pyramid. The C(5)-H(5) bond length is 1.10 Å. The C(5)-H(6) bond length is 1.10 Å. The C(5)-H(7) bond length is 1.10 Å. The C(5)-O(2) bond length is 1.43 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(1), and one N(1) atom. The N(1)-N(1) bond length is 1.40 Å. In the second N site, N(2) is bonded in a linear geometry to one Cu(1) and one C(3) atom. In the third N site, N(3) is bonded in a bent 120 degrees geometry to one C(3) and one C(4) atom. In the fourth N site, N(4) is bonded in a bent 150 degrees geometry to one Cu(1) and one C(4) atom. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) and one O(2) atom. The H(1)-O(1) bond length is 1.71 Å. The H(1)-O(2) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(5) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(5) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(5) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(1), and one H(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Cu(1), one C(5), and one H(1) atom. Linkers: 2 CC(=O)[N][N]C(C)=O. Metal clusters: 4 [Cu]. The MOF has largest included sphere 1.78 A, density 1.85 g/cm3, surface area 4456.90 m2/g, accessible volume 0.16 cm3/g