Cu3C17H10O10 crystallizes in the orthorhombic Pccn space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 3-coordinate geometry to one O(2), one O(4), and one O(5) atom. The Cu(1)-O(2) bond length is 1.98 Å. The Cu(1)-O(4) bond length is 1.97 Å. The Cu(1)-O(5) bond length is 1.95 Å. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(3) and two equivalent O(5) atoms. Both Cu(2)-O(3) bond lengths are 1.96 Å. Both Cu(2)-O(5) bond lengths are 1.93 Å. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-C(6) bond length is 1.40 Å. The C(1)-C(7) bond length is 1.50 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(1) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-H(1) bond length is 0.93 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(8) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-C(8) bond length is 1.50 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(2) atom. The C(4)-C(5) bond length is 1.39 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(9) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-C(9) bond length is 1.51 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(1), one C(5), and one H(3) atom. The C(6)-H(3) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.24 Å. The C(7)-O(2) bond length is 1.29 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.27 Å. The C(8)-O(4) bond length is 1.24 Å. In the ninth C site, C(9) is bonded in a water-like geometry to two equivalent C(5) and two equivalent H(4) atoms. Both C(9)-H(4) bond lengths are 0.97 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) 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(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(9) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(5) atom. The H(5)-O(5) bond length is 0.94 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one C(7) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cu(1) and one C(7) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(8) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(8) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one Cu(2), and one H(5) atom. Linkers: 4 [O]C(=O)c1cc(Cc2cc(C([O])=O)cc(C([O])=O)c2)cc(C([O])=O)c1. Metal clusters: 4 O=[C]O[Cu]O[C]O[Cu](O)(O)O[C]O[Cu]O[C]=O. RCSR code: pts. The MOF has largest included sphere 6.38 A, density 1.34 g/cm3, surface area 3609.27 m2/g, accessible volume 0.41 cm3/g