Cu2C8H4SO8 crystallizes in the orthorhombic Pnnm space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted trigonal pyramidal geometry to one O(4), one O(5), and two equivalent O(2) atoms. The Cu(1)-O(4) bond length is 1.94 Å. The Cu(1)-O(5) bond length is 2.28 Å. Both Cu(1)-O(2) bond lengths are 1.93 Å. In the second Cu site, Cu(2) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. Both Cu(2)-O(1) bond lengths are 1.95 Å. Both Cu(2)-O(4) bond lengths are 1.99 Å. There are five inequivalent C sites. In the first C site, C(4) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(3) atom. Both C(4)-C(2) bond lengths are 1.39 Å. The C(4)-H(3) bond length is 0.95 Å. In the second C site, C(5) is bonded in a trigonal planar geometry to two equivalent C(3) and one S(1) atom. Both C(5)-C(3) bond lengths are 1.39 Å. The C(5)-S(1) bond length is 1.78 Å. In the third C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.51 Å. The C(1)-O(1) bond length is 1.24 Å. The C(1)-O(2) bond length is 1.26 Å. In the fourth C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(4) atom. The C(2)-C(3) bond length is 1.39 Å. In the fifth 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 0.95 Å. There are three 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 O(4) atom. The H(2)-O(4) bond length is 0.84 Å. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. S(1) is bonded in a distorted trigonal non-coplanar geometry to one C(5), one O(5), and two equivalent O(3) atoms. The S(1)-O(5) bond length is 1.45 Å. Both S(1)-O(3) bond lengths are 1.44 Å. There are five inequivalent O sites. In the first O site, O(3) is bonded in a single-bond geometry to one S(1) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to one Cu(1), two equivalent Cu(2), and one H(2) atom. In the third O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one S(1) atom. In the fourth O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(1) atom. In the fifth O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one C(1) atom. Linkers: 4 [O]C(=O)c1cc(C([O])=O)cc(S([O])([O])[O])c1. Metal clusters: 1 [O][S@](=O)O[Cu@]1(O)O[C]O[Cu]O[C]O[Cu@@](O)(O[S@]([O])=O)O[C]O[Cu]O[C]O1 ,1 [O][S@@](=O)O[Cu@]1(O)O[C]O[Cu]O[C]O[Cu@@](O)(O[S@@]([O])=O)O[C]O[Cu]O[C]O1. RCSR code: rtl. The MOF has largest included sphere 5.74 A, density 1.22 g/cm3, surface area 3127.44 m2/g, accessible volume 0.46 cm3/g