CuC7NH7O6 crystallizes in the orthorhombic Pnna space group. Cu(1) is bonded in a distorted square pyramidal geometry to one N(1), one O(2), one O(3), one O(5), and one O(6) atom. The Cu(1)-N(1) bond length is 1.97 Å. The Cu(1)-O(2) bond length is 1.99 Å. The Cu(1)-O(3) bond length is 1.99 Å. The Cu(1)-O(5) bond length is 2.45 Å. The Cu(1)-O(6) bond length is 1.96 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one N(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(6) bond length is 1.51 Å. The C(1)-N(1) bond length is 1.35 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(5) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-H(5) bond length is 1.09 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(7) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(7) bond length is 1.51 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(6) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(6) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one H(7) atom. The C(5)-N(1) bond length is 1.34 Å. The C(5)-H(7) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(6)-O(1) bond length is 1.24 Å. The C(6)-O(2) bond length is 1.30 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(4) atom. The C(7)-O(3) bond length is 1.29 Å. The C(7)-O(4) bond length is 1.26 Å. N(1) is bonded in a trigonal planar geometry to one Cu(1), one C(1), and one C(5) atom. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(5) atom. The H(1)-O(1) bond length is 1.69 Å. The H(1)-O(5) bond length is 1.00 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. The H(2)-O(5) bond length is 0.97 Å. In the third H site, H(3) is bonded in a distorted bent 150 degrees geometry to one O(4) and one O(6) atom. The H(3)-O(4) bond length is 1.60 Å. The H(3)-O(6) bond length is 1.02 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(2) and one O(6) atom. The H(4)-O(2) bond length is 1.70 Å. The H(4)-O(6) bond length is 1.00 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(2) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(4) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(5) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one C(6) and one H(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one C(6), and one H(4) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one C(7) and one H(3) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Cu(1), one H(1), and one H(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one H(3), and one H(4) atom. Linkers: 8 [O]C(=O)c1ccnc(C([O])=O)c1. Metal clusters: 8 [Cu]. The MOF has largest included sphere 2.60 A, density 1.96 g/cm3, surface area 3469.60 m2/g, accessible volume 0.14 cm3/g