Cu2C8H3SO8 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(3), one O(4), and one O(8) atom. The Cu(1)-O(2) bond length is 1.95 Å. The Cu(1)-O(3) bond length is 1.94 Å. The Cu(1)-O(4) bond length is 1.91 Å. The Cu(1)-O(8) bond length is 2.37 Å. In the second Cu site, Cu(2) is bonded to one O(1), one O(6), one O(7), and two equivalent O(2) atoms to form edge-sharing CuO5 square pyramids. The Cu(2)-O(1) bond length is 1.93 Å. The Cu(2)-O(6) bond length is 1.90 Å. The Cu(2)-O(7) bond length is 2.32 Å. There is one shorter (1.96 Å) and one longer (1.98 Å) Cu(2)-O(2) bond length. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(6), one C(7), and one S(1) atom. The C(1)-C(6) bond length is 1.39 Å. The C(1)-C(7) bond length is 1.38 Å. The C(1)-S(1) bond length is 1.77 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(3), one C(7), and one C(8) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-C(7) bond length is 1.39 Å. The C(2)-C(8) bond length is 1.50 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(4), and one H(1) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(6) atom. The C(4)-C(5) bond length is 1.48 Å. The C(4)-C(6) bond length is 1.38 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(1), and one O(4) atom. The C(5)-O(1) bond length is 1.26 Å. The C(5)-O(4) bond length is 1.27 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(1), one C(4), and one H(2) atom. The C(6)-H(2) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a single-bond geometry to one C(1), one C(2), and one H(3) atom. The C(7)-H(3) bond length is 0.93 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(3), and one O(6) atom. The C(8)-O(3) bond length is 1.25 Å. The C(8)-O(6) bond length is 1.26 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 C(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. S(1) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one O(5), one O(7), and one O(8) atom. The S(1)-O(5) bond length is 1.42 Å. The S(1)-O(7) bond length is 1.44 Å. The S(1)-O(8) bond length is 1.43 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(5) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Cu(1) and two equivalent Cu(2) atoms. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(8) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one C(5) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one S(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(8) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Cu(2) and one S(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one S(1) atom. Linkers: 4 [O]C(=O)c1cc(C([O])=O)cc(S([O])([O])[O])c1. Metal clusters: 8 [Cu]. The MOF has largest included sphere 3.93 A, density 1.90 g/cm3, surface area 2973.70 m2/g, accessible volume 0.21 cm3/g