CuC20H14(NO)4 crystallizes in the tetragonal I4_1/a space group. Cu(1) is bonded in a square co-planar geometry to two equivalent N(1) and two equivalent O(1) atoms. Both Cu(1)-N(1) bond lengths are 1.97 Å. Both Cu(1)-O(1) bond lengths are 2.01 Å. There are ten inequivalent C sites. In the first C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(3), one N(1), and one H(2) atom. The C(2)-C(3) bond length is 1.37 Å. The C(2)-N(1) bond length is 1.38 Å. The C(2)-H(2) bond length is 1.08 Å. In the second C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(2), one N(2), and one H(3) atom. The C(3)-N(2) bond length is 1.39 Å. The C(3)-H(3) bond length is 1.08 Å. In the third C site, C(4) is bonded in a distorted trigonal planar geometry to one C(5), one C(9), and one N(2) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-C(9) bond length is 1.40 Å. The C(4)-N(2) bond length is 1.42 Å. In the fourth C site, C(5) is bonded in a distorted single-bond geometry to one C(4), one C(6), and one H(4) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(4) bond length is 1.09 Å. In the fifth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one C(7), and one H(5) atom. The C(6)-C(7) bond length is 1.40 Å. The C(6)-H(5) bond length is 1.09 Å. In the sixth C site, C(7) is bonded in a trigonal planar geometry to one C(10), one C(6), and one C(8) atom. The C(7)-C(10) bond length is 1.51 Å. The C(7)-C(8) bond length is 1.40 Å. In the seventh C site, C(8) is bonded in a distorted single-bond geometry to one C(7), one C(9), and one H(6) atom. The C(8)-C(9) bond length is 1.39 Å. The C(8)-H(6) bond length is 1.09 Å. In the eighth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(4), one C(8), and one H(7) atom. The C(9)-H(7) bond length is 1.09 Å. In the ninth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(1), and one O(2) atom. The C(10)-O(1) bond length is 1.30 Å. The C(10)-O(2) bond length is 1.25 Å. In the tenth C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(1) atom. The C(1)-N(1) bond length is 1.33 Å. The C(1)-N(2) bond length is 1.36 Å. The C(1)-H(1) bond length is 1.08 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(1), and one C(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(1), one C(3), 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 C(1) atom. 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(3) 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. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(8) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(9) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Cu(1) and one C(10) atom. In the second O site, O(2) is bonded in a single-bond geometry to one C(10) atom. Linkers: 2 [C]N1[CH]N([Cu](OC(=O)c2ccc(-n3ccnc3)cc2)(OC(=O)c2ccc(-n3ccnc3)cc2)N2[CH]N(c3ccc(C([O])=O)cc3)C=C2)C=C1 ,2 [O]C(=O)c1ccc(N2[CH]N([Cu](OC(=O)c3ccc(-n4ccnc4)cc3)(OC(=O)c3ccc(-n4ccnc4)cc3)N3[CH]N(c4ccc(C([O])=O)cc4)C=C3)C=C2)cc1 ,2 [CH]C(=[CH])C(=O)O[Cu](OC(=O)c1ccc(-n2ccnc2)cc1)(N1[CH]N(c2ccc(C([O])=O)cc2)C=C1)N1[CH]N(c2ccc(C([O])=O)cc2)C=C1. Metal clusters: 2 O=[C]O[Cu]O[C]=O. The MOF has largest included sphere 5.76 A, density 1.11 g/cm3, surface area 4755.33 m2/g, accessible volume 0.49 cm3/g