CuC12N10H10O crystallizes in the orthorhombic Aea2 space group. Cu(1) is bonded in a square pyramidal geometry to two equivalent N(2), two equivalent N(5), and one O(1) atom. Both Cu(1)-N(2) bond lengths are 2.01 Å. Both Cu(1)-N(5) bond lengths are 2.04 Å. The Cu(1)-O(1) bond length is 2.17 Å. There are six inequivalent C sites. In the first C site, C(6) is bonded in a distorted trigonal planar geometry to one C(2), one C(5), and one H(5) atom. The C(6)-C(2) bond length is 1.40 Å. The C(6)-C(5) bond length is 1.39 Å. The C(6)-H(5) bond length is 1.09 Å. In the second C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one N(4) atom. The C(1)-C(2) bond length is 1.46 Å. The C(1)-N(1) bond length is 1.34 Å. The C(1)-N(4) bond length is 1.35 Å. In the third C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(6) atom. The C(2)-C(3) bond length is 1.40 Å. In the fourth C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one H(2) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(2) bond length is 1.09 Å. In the fifth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one N(5), and one H(3) atom. The C(4)-N(5) bond length is 1.35 Å. The C(4)-H(3) bond length is 1.09 Å. In the sixth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(6), one N(5), and one H(4) atom. The C(5)-N(5) bond length is 1.35 Å. The C(5)-H(4) bond length is 1.09 Å. There are five inequivalent N sites. In the first N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one N(1), and one N(3) atom. The N(2)-N(1) bond length is 1.33 Å. The N(2)-N(3) bond length is 1.34 Å. In the second N site, N(3) is bonded in a water-like geometry to one N(2) and one N(4) atom. The N(3)-N(4) bond length is 1.33 Å. In the third N site, N(4) is bonded in a distorted single-bond geometry to one C(1), one N(3), and one H(1) atom. The N(4)-H(1) bond length is 1.77 Å. In the fourth N site, N(5) is bonded in a trigonal planar geometry to one Cu(1), one C(4), and one C(5) atom. In the fifth N site, N(1) is bonded in a distorted water-like geometry to one C(1) and one N(2) atom. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(4) and one O(1) atom. The H(1)-O(1) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(6) atom. O(1) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and two equivalent H(1) atoms. Linkers: 2 O.[c]1cc(-c2nnn([Cu](N3[CH]C=C(C4=N[N]N=N4)C=C3)(N3[CH]C=C(C4=N[N]N=N4)C=C3)n3nnc(-c4ccncc4)n3)n2)ccn1 ,1 O.[CH]1C=C(C2=N[N]N=N2)C=CN1[Cu](N1[CH]C=C(C2=N[N]N=N2)C=C1)(n1nnc(-c2ccncc2)n1)n1nnc(-c2ccncc2)n1. Metal clusters: 1 O.[Cu]. The MOF has largest included sphere 3.00 A, density 1.60 g/cm3, surface area 4313.60 m2/g, accessible volume 0.11 cm3/g