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 to one O(6), one O(7), one O(8), and two equivalent O(5) atoms to form edge-sharing CuO5 square pyramids. The Cu(1)-O(6) bond length is 1.91 Å. The Cu(1)-O(7) bond length is 1.94 Å. The Cu(1)-O(8) bond length is 2.21 Å. There is one shorter (1.97 Å) and one longer (1.98 Å) Cu(1)-O(5) bond length. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(2), one O(4), and one O(5) atom. The Cu(2)-O(1) bond length is 2.37 Å. The Cu(2)-O(2) bond length is 1.93 Å. The Cu(2)-O(4) bond length is 1.92 Å. The Cu(2)-O(5) bond length is 1.97 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(1) atom. The C(1)-C(3) bond length is 1.39 Å. The C(1)-C(5) bond length is 1.39 Å. The C(1)-H(1) bond length is 0.93 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(4), one C(7), and one C(8) atom. The C(2)-C(4) bond length is 1.39 Å. The C(2)-C(7) bond length is 1.40 Å. The C(2)-C(8) bond length is 1.49 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(7), and one S(1) atom. The C(3)-C(7) bond length is 1.39 Å. The C(3)-S(1) bond length is 1.76 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(2), 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(1), one C(4), and one C(6) atom. The C(5)-C(6) bond length is 1.50 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(4), and one O(7) atom. The C(6)-O(4) bond length is 1.25 Å. The C(6)-O(7) bond length is 1.27 Å. In the seventh C site, C(7) is bonded in a single-bond geometry to one C(2), one C(3), 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(2), and one O(6) atom. The C(8)-O(2) bond length is 1.26 Å. The C(8)-O(6) bond length is 1.27 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) 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(7) atom. S(1) is bonded in a distorted trigonal non-coplanar geometry to one C(3), one O(1), one O(3), and one O(8) atom. The S(1)-O(1) bond length is 1.46 Å. The S(1)-O(3) bond length is 1.44 Å. The S(1)-O(8) bond length is 1.46 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cu(2) and one S(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one C(8) atom. In the third O site, O(3) is bonded in a single-bond geometry to one S(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Cu(2) and one C(6) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Cu(2) and two equivalent Cu(1) atoms. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(8) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(6) 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 3.91 A, density 1.92 g/cm3, surface area 2956.33 m2/g, accessible volume 0.19 cm3/g