Co2C7HO6CH crystallizes in the trigonal R3m space group. The structure consists of nine 02329_fluka molecules inside a Co2C7HO6 framework. In the Co2C7HO6 framework, Co(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form edge-sharing CoO5 square pyramids. The Co(1)-O(1) bond length is 1.99 Å. There is one shorter (2.04 Å) and one longer (2.07 Å) Co(1)-O(2) bond length. There is one shorter (1.96 Å) and one longer (2.12 Å) Co(1)-O(3) bond length. There are four 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(3) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.31 Å. The C(1)-O(3) bond length is 1.30 Å. In the second 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 1.44 Å. The C(2)-C(4) bond length is 1.38 Å. In the third C site, C(3) is bonded in a single-bond geometry to one C(2) and one O(2) atom. The C(3)-O(2) bond length is 1.34 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(1) atom. The C(4)-H(1) bond length is 0.93 Å. H(1) is bonded in a single-bond geometry to one C(4) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Co(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one C(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one C(1) atom. Linkers: 3 [O]C(=O)c1cc(C([O])=O)c([O])cc1[O]. Metal clusters: 6 [Co]. The MOF has largest included sphere 11.02 A, density 1.19 g/cm3, surface area 2422.29 m2/g, accessible volume 0.51 cm3/g