CuC11H8O6 crystallizes in the trigonal P-3m1 space group. Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Cu(1)-O(1) bond lengths are 1.96 Å. Both Cu(1)-O(2) bond lengths are 1.93 Å. There are seven inequivalent C sites. In the first C site, C(5) is bonded in a trigonal planar geometry to one C(7) and two equivalent C(3) atoms. The C(5)-C(7) bond length is 1.47 Å. Both C(5)-C(3) bond lengths are 1.38 Å. In the second C site, C(6) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(4) atom. Both C(6)-C(2) bond lengths are 1.37 Å. The C(6)-H(4) bond length is 0.93 Å. In the third C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(5) and two equivalent O(3) atoms. Both C(7)-O(3) bond lengths are 1.27 Å. In the fourth 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 1.49 Å. The C(1)-O(1) bond length is 1.25 Å. The C(1)-O(2) bond length is 1.26 Å. In the fifth C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(6) atom. The C(2)-C(3) bond length is 1.40 Å. In the sixth C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(5), and one H(1) atom. The C(3)-H(1) bond length is 0.96 Å. In the seventh C site, C(4) is bonded to one H(2), one H(3), one H(5), and one O(3) atom to form corner-sharing CH3O tetrahedra. The C(4)-H(2) bond length is 0.97 Å. The C(4)-H(3) bond length is 0.97 Å. The C(4)-H(5) bond length is 1.02 Å. The C(4)-O(3) bond length is 1.42 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) 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(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(6) atom. In the fifth H site, H(5) is bonded in a bent 150 degrees geometry to two equivalent C(4) atoms. There are three inequivalent O sites. In the first O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the second O site, O(3) is bonded in a bent 120 degrees geometry to one C(4) and one C(7) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. Linkers: 2 CO[C](OC)c1cc(C([O])=O)cc(C([O])=O)c1.[CH2]O[C](OC)c1cc(C([O])=O)cc(C([O])=O)c1.[CH2]O[C](OC)c1cc(C([O])=O)cc(C([O])=O)c1.[CH2]O[C](OC)c1cc([C]=O)cc([C]=O)c1.[CH2]O[C](OC)c1cc([C]=O)cc([C]=O)c1.[CH2]O[C](O[CH2])c1cc([C]=O)cc([C]=O)c1 ,2 CO[C](OC)c1cc([C]=O)cc([C]=O)c1.[CH2]O[C](OC)c1cc(C([O])=O)cc(C([O])=O)c1.[CH2]O[C](OC)c1cc(C([O])=O)cc(C([O])=O)c1.[CH2]O[C](OC)c1cc([C]=O)cc([C]=O)c1.[CH2]O[C](OC)c1cc([C]=O)cc([C]=O)c1.[CH2]O[C](O[CH2])c1cc(C([O])=O)cc(C([O])=O)c1 ,3 [CH2]O[C](O[CH2])c1cc(C([O])=O)cc(C([O])=O)c1 ,3 [CH]O[C](O[CH])c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 3 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. The MOF has largest included sphere 6.73 A, density 1.47 g/cm3, surface area 3603.89 m2/g, accessible volume 0.31 cm3/g