CuC19N2H10O5 crystallizes in the monoclinic C2/c space group. Cu(1) is bonded in a rectangular see-saw-like geometry to one N(1), one N(2), one O(1), and one O(2) atom. The Cu(1)-N(1) bond length is 2.02 Å. The Cu(1)-N(2) bond length is 2.02 Å. The Cu(1)-O(1) bond length is 2.01 Å. The Cu(1)-O(2) bond length is 2.01 Å. There are thirteen inequivalent C sites. In the first C site, C(13,14) is bonded in a distorted single-bond geometry to one C(19,20) and one H(5,6) atom. The C(13,14)-C(19,20) bond length is 1.40 Å. The C(13,14)-H(5,6) bond length is 1.09 Å. In the second C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(17,18); one N(1); and one H(7,8) atom. The C(15)-C(17,18) bond length is 1.39 Å. The C(15)-N(1) bond length is 1.35 Å. The C(15)-H(7,8) bond length is 1.08 Å. In the third C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(17,18); one N(2); and one H(7,8) atom. The C(16)-C(17,18) bond length is 1.39 Å. The C(16)-N(2) bond length is 1.35 Å. The C(16)-H(7,8) bond length is 1.08 Å. In the fourth C site, C(17,18) is bonded in a distorted trigonal planar geometry to one C(15); one C(19,20); and one H(9,10) atom. The C(17,18)-C(19,20) bond length is 1.40 Å. The C(17,18)-H(9,10) bond length is 1.09 Å. In the fifth C site, C(19,20) is bonded in a trigonal planar geometry to one C(13,14); one C(17,18); and one C(19,20) atom. The C(19,20)-C(19,20) bond length is 1.48 Å. In the sixth C site, C(1,2) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(3) atom. The C(1,2)-C(3) bond length is 1.51 Å. The C(1,2)-O(1) bond length is 1.29 Å. The C(1,2)-O(3) bond length is 1.25 Å. In the seventh C site, C(3) is bonded in a trigonal planar geometry to one C(1,2); one C(4); and one C(5,6) atom. The C(3)-C(4) bond length is 1.41 Å. The C(3)-C(5,6) bond length is 1.40 Å. In the eighth C site, C(4) is bonded in a trigonal planar geometry to one C(1,2); one C(3); and one C(5,6) atom. The C(4)-C(1,2) bond length is 1.51 Å. The C(4)-C(5,6) bond length is 1.40 Å. In the ninth C site, C(5,6) is bonded in a distorted trigonal planar geometry to one C(3); one C(7,8); and one H(1,2) atom. The C(5,6)-C(7,8) bond length is 1.40 Å. The C(5,6)-H(1,2) bond length is 1.09 Å. In the tenth C site, C(7,8) is bonded in a trigonal planar geometry to one C(5,6); one C(7,8); and one C(9,10) atom. The C(7,8)-C(7,8) bond length is 1.41 Å. The C(7,8)-C(9,10) bond length is 1.49 Å. In the eleventh C site, C(9,10) is bonded in a distorted single-bond geometry to two equivalent C(7,8) and one O(5,6) atom. The C(9,10)-O(5,6) bond length is 1.24 Å. In the twelfth C site, C(11) is bonded in a distorted trigonal planar geometry to one N(1) and one H(3,4) atom. The C(11)-N(1) bond length is 1.35 Å. The C(11)-H(3,4) bond length is 1.09 Å. In the thirteenth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(3,4) atom. The C(12)-N(2) bond length is 1.35 Å. The C(12)-H(3,4) bond length is 1.09 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Cu(1), one C(11), and one C(15) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cu(1), one C(12), and one C(16) atom. There are five inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(5,6) atom. In the second H site, H(3,4) is bonded in a single-bond geometry to one C(11) atom. In the third H site, H(5,6) is bonded in a single-bond geometry to one C(13,14) atom. In the fourth H site, H(7,8) is bonded in a single-bond geometry to one C(15) atom. In the fifth H site, H(9,10) is bonded in a single-bond geometry to one C(17,18) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Cu(1) and one C(1,2) atom. In the second O site, O(2) is bonded in a water-like geometry to one Cu(1) and one C(1,2) atom. The O(2)-C(1,2) bond length is 1.29 Å. In the third O site, O(3) is bonded in a single-bond geometry to one C(1,2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one C(1,2) atom. The O(4)-C(1,2) bond length is 1.25 Å. In the fifth O site, O(5,6) is bonded in a single-bond geometry to one C(9,10) atom. Linkers: 2 [O]C(=O)c1cc2c(cc1C([O])=O)C(=O)c1cc(C([O])=O)c(C([O])=O)cc1C2=O ,4 c1cc(-c2ccncc2)ccn1. Metal clusters: 4 O=[C]O[Cu]O[C]=O. The MOF has largest included sphere 3.63 A, density 1.59 g/cm3, surface area 3774.70 m2/g, accessible volume 0.23 cm3/g