Co2C12H10S2O11 crystallizes in the monoclinic C2/c space group. Co(1) is bonded to one O(1), one O(2), one O(5), one O(6), and two equivalent O(3) atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 66°. The Co(1)-O(1) bond length is 2.08 Å. The Co(1)-O(2) bond length is 2.00 Å. The Co(1)-O(5) bond length is 2.09 Å. The Co(1)-O(6) bond length is 2.15 Å. There is one shorter (2.10 Å) and one longer (2.11 Å) Co(1)-O(3) bond length. There are six inequivalent C sites. In the first 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 1.47 Å. The C(1)-O(1) bond length is 1.29 Å. The C(1)-O(2) bond length is 1.27 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one S(1) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-S(1) bond length is 1.72 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(4) atom. The C(3)-H(4) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(5) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(5) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one S(1) atom. The C(5)-C(6) bond length is 1.46 Å. The C(5)-S(1) bond length is 1.72 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(4) atom. The C(6)-O(3) bond length is 1.31 Å. The C(6)-O(4) bond length is 1.27 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) and one O(5) atom. The H(1)-O(1) bond length is 1.71 Å. The H(1)-O(5) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. The H(2)-O(5) bond length is 0.98 Å. In the third H site, H(3) is bonded in a distorted single-bond geometry to one O(4) and one O(6) atom. The H(3)-O(4) bond length is 1.66 Å. The H(3)-O(6) bond length is 1.01 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(4) atom. S(1) is bonded in an L-shaped geometry to one C(2) and one C(5) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Co(1), one C(1), and one H(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one C(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Co(1) and one C(6) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one C(6) and one H(3) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Co(1), one H(1), and one H(2) atom. In the sixth O site, O(6) is bonded in a distorted water-like geometry to two equivalent Co(1) and two equivalent H(3) atoms. Linkers: 4 [O]C(=O)c1ccc(C([O])=O)s1. Metal clusters: 4 [Co]. RCSR code: umc. The MOF has largest included sphere 1.65 A, density 2.23 g/cm3, surface area 2899.74 m2/g, accessible volume 0.06 cm3/g