CuC7NH3O4 crystallizes in the hexagonal P6_3mc space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. Both Cu(1)-O(1) bond lengths are 1.96 Å. Both Cu(1)-O(3) bond lengths are 1.97 Å. In the second Cu site, Cu(2) is bonded in a distorted square pyramidal geometry to one N(2), two equivalent O(2), and two equivalent O(4) atoms. The Cu(2)-N(2) bond length is 2.13 Å. Both Cu(2)-O(2) bond lengths are 1.96 Å. Both Cu(2)-O(4) bond lengths are 1.97 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one H(1) atom. The C(1)-C(2) bond length is 1.37 Å. The C(1)-N(1) bond length is 1.33 Å. The C(1)-H(1) bond length is 0.93 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 1.51 Å. The C(2)-C(7) bond length is 1.39 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 1.26 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(5), one N(2), and one H(2) atom. The C(4)-C(5) bond length is 1.38 Å. The C(4)-N(2) bond length is 1.35 Å. The C(4)-H(2) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(8) atom. The C(5)-C(6) bond length is 1.49 Å. The C(5)-C(8) bond length is 1.40 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(4) atom. The C(6)-O(3) bond length is 1.26 Å. The C(6)-O(4) bond length is 1.25 Å. 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. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to two equivalent C(5) and one H(4) atom. The C(8)-H(4) bond length is 0.93 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to two equivalent C(1) atoms. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cu(2) and two equivalent C(4) atoms. There are four 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(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. There are four 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 bent 120 degrees geometry to one Cu(2) and one C(3) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(6) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(6) atom. Linkers: 12 [O]C(=O)c1cncc(C([O])=O)c1. Metal clusters: 6 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. RCSR code: kgm. The MOF has largest included sphere 9.77 A, density 1.08 g/cm3, surface area 3433.17 m2/g, accessible volume 0.53 cm3/g