Cu2C21H12(N3O4)2 crystallizes in the hexagonal P6_3/mmc 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 1.96 Å. There are eight inequivalent C sites. In the first C site, C(5) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(4) atom. Both C(5)-C(2) bond lengths are 1.40 Å. The C(5)-H(4) bond length is 0.93 Å. In the second C site, C(6) is bonded in a trigonal planar geometry to one C(7) and two equivalent C(3) atoms. The C(6)-C(7) bond length is 1.50 Å. Both C(6)-C(3) bond lengths are 1.40 Å. In the third C site, C(7) is bonded in a 4-coordinate geometry to one C(6), one C(8), and two equivalent N(1) atoms. The C(7)-C(8) bond length is 1.36 Å. Both C(7)-N(1) bond lengths are 1.41 Å. In the fourth C site, C(8) is bonded in a 4-coordinate geometry to two equivalent C(7) and two equivalent N(2) atoms. Both C(8)-N(2) bond lengths are 1.46 Å. In the fifth C site, C(4) is bonded in a distorted trigonal planar geometry to two equivalent N(1) and one H(3) atom. Both C(4)-N(1) bond lengths are 1.30 Å. The C(4)-H(3) bond length is 0.93 Å. In the sixth C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.26 Å. In the seventh C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(5) atom. The C(2)-C(3) bond length is 1.37 Å. In the eighth C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(6), and one H(2) atom. The C(3)-H(2) bond length is 0.93 Å. There are two inequivalent N sites. In the first N site, N(2) is bonded in a distorted bent 120 degrees geometry to one C(8) and two equivalent H(1) atoms. Both N(2)-H(1) bond lengths are 0.89 Å. In the second N site, N(1) is bonded in a bent 120 degrees geometry to one C(4) and one C(7) atom. There are four inequivalent H sites. In the first H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(1) is bonded in a single-bond geometry to one N(2) atom. In the third H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(3) 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(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cu(1) and one C(1) atom. Linkers: 6 [O]C(=O)c1cc(cc(c1)C(=O)[O])[C@]12[N@@]3[N@]1[C@H]1[C@@H]3[N@]3[C@@](C42[NH2][NH2]4)([N@@]13)c1cc(cc(c1)C(=O)[O])C(=O)[O]. Metal clusters: 6 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. RCSR code: ssa. The MOF has largest included sphere 10.66 A, density 0.84 g/cm3, surface area 3584.26 m2/g, accessible volume 0.84 cm3/g