CuC11H5(NO2)2 crystallizes in the trigonal R-3m space group. Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Cu(1)-O(1) bond lengths are 1.95 Å. Both Cu(1)-O(2) bond lengths are 1.95 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a single-bond geometry to one C(2), one C(6), and one H(1) atom. The C(1)-C(2) bond length is 1.37 Å. The C(1)-C(6) bond length is 1.39 Å. The C(1)-H(1) bond length is 0.95 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(7) atom. The C(2)-C(3) bond length is 1.50 Å. The C(2)-C(7) bond length is 1.38 Å. In the third C site, C(3) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(3)-O(1) bond length is 1.26 Å. The C(3)-O(2) bond length is 1.25 Å. In the fourth C site, C(4) is bonded in a 4-coordinate geometry to one C(5), two equivalent N(1), and one H(2) atom. The C(4)-C(5) bond length is 1.37 Å. There is one shorter (1.09 Å) and one longer (1.36 Å) C(4)-N(1) bond length. The C(4)-H(2) bond length is 0.95 Å. In the fifth C site, C(5) is bonded in a 5-coordinate geometry to one C(6), two equivalent C(4), and two equivalent N(1) atoms. The C(5)-C(6) bond length is 1.46 Å. Both C(5)-N(1) bond lengths are 1.33 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(5) and two equivalent C(1) atoms. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(3) atom. The C(7)-H(3) bond length is 0.95 Å. N(1) is bonded in a distorted single-bond geometry to one C(5) and two equivalent C(4) atoms. There are three inequivalent H sites. In the first H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the second H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(2) is bonded in a single-bond geometry to one C(4) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(3) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(3) atom. Linkers: 9 [C@H]12[N@]3[C@@H]4[N@]1C41[C@H]4[N@@]5[C@H]([N@@]41)C253.[O]C(=O)c1c[c]cc(C([O])=O)c1.[O]C(=O)c1c[c]cc(C([O])=O)c1. Metal clusters: 9 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. RCSR code: nbo. The MOF has largest included sphere 11.10 A, density 0.77 g/cm3, surface area 3370.73 m2/g, accessible volume 0.96 cm3/g