Co4C7H5(SO7)2CH crystallizes in the trigonal R-3 space group. The structure consists of eighteen 02329_fluka molecules inside a Co4C7H5(SO7)2 framework. In the Co4C7H5(SO7)2 framework, there are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted rectangular see-saw-like geometry to one O(13), one O(2), one O(5), and one O(9) atom. The Co(1)-O(13) bond length is 2.00 Å. The Co(1)-O(2) bond length is 2.01 Å. The Co(1)-O(5) bond length is 2.13 Å. The Co(1)-O(9) bond length is 2.16 Å. In the second Co site, Co(2) is bonded to one O(11), one O(13), one O(14), one O(3), and one O(6) atom to form CoO5 square pyramids that share  a cornercorner with one Co(4)O5 square pyramid,  a cornercorner with one S(1)O4 tetrahedra, and  a cornercorner with one S(2)O4 tetrahedra. The Co(2)-O(11) bond length is 2.11 Å. The Co(2)-O(13) bond length is 2.08 Å. The Co(2)-O(14) bond length is 2.10 Å. The Co(2)-O(3) bond length is 2.03 Å. The Co(2)-O(6) bond length is 2.10 Å. In the third Co site, Co(3) is bonded in a rectangular see-saw-like geometry to one O(10), one O(13), one O(14), and one O(8) atom. The Co(3)-O(10) bond length is 2.06 Å. The Co(3)-O(13) bond length is 2.04 Å. The Co(3)-O(14) bond length is 2.06 Å. The Co(3)-O(8) bond length is 2.11 Å. In the fourth Co site, Co(4) is bonded to one O(1), one O(14), one O(4), one O(5), and one O(9) atom to form CoO5 square pyramids that share  a cornercorner with one Co(2)O5 square pyramid,  a cornercorner with one S(1)O4 tetrahedra, and  a cornercorner with one S(2)O4 tetrahedra. The Co(4)-O(1) bond length is 2.05 Å. The Co(4)-O(14) bond length is 2.02 Å. The Co(4)-O(4) bond length is 2.01 Å. The Co(4)-O(5) bond length is 2.23 Å. The Co(4)-O(9) bond length is 2.12 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(3), one O(1), and one O(2) atom. The C(1)-C(3) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.27 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(3), and one O(4) atom. The C(2)-C(7) bond length is 1.51 Å. The C(2)-O(3) bond length is 1.26 Å. The C(2)-O(4) bond length is 1.25 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(8) atom. The C(3)-C(4) bond length is 1.41 Å. The C(3)-C(8) bond length is 1.38 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3) and one H(1) atom. The C(4)-H(1) bond length is 0.95 Å. In the fifth C site, C(6) is bonded in a distorted single-bond geometry to one C(7) and one H(3) atom. The C(6)-C(7) bond length is 1.39 Å. The C(6)-H(3) bond length is 0.95 Å. In the sixth C site, C(7) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(8) atom. The C(7)-C(8) bond length is 1.39 Å. In the seventh C site, C(8) is bonded in a distorted trigonal planar geometry to one C(3), one C(7), and one H(4) atom. The C(8)-H(4) bond length is 0.95 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(8) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one O(13) atom. The H(5)-O(13) bond length is 0.85 Å. In the fifth H site, H(6) is bonded in a single-bond geometry to one O(14) atom. The H(6)-O(14) bond length is 0.85 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SO4 tetrahedra that share  a cornercorner with one Co(2)O5 square pyramid and  a cornercorner with one Co(4)O5 square pyramid. The S(1)-O(5) bond length is 1.51 Å. The S(1)-O(6) bond length is 1.48 Å. The S(1)-O(7) bond length is 1.46 Å. The S(1)-O(8) bond length is 1.49 Å. In the second S site, S(2) is bonded to one O(10), one O(11), one O(12), and one O(9) atom to form SO4 tetrahedra that share  a cornercorner with one Co(2)O5 square pyramid and  a cornercorner with one Co(4)O5 square pyramid. The S(2)-O(10) bond length is 1.47 Å. The S(2)-O(11) bond length is 1.46 Å. The S(2)-O(12) bond length is 1.45 Å. The S(2)-O(9) bond length is 1.51 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Co(4) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Co(1) and one C(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Co(2) and one C(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Co(4) and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(4), and one S(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Co(2) and one S(1) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one S(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Co(3) and one S(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Co(1), one Co(4), and one S(2) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Co(3) and one S(2) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one S(2) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one S(2) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one Co(1), one Co(2), one Co(3), and one H(5) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one Co(2), one Co(3), one Co(4), and one H(6) atom. Linkers: 6 [O]C(=O)c1cccc(C([O])=O)c1. Metal clusters: 1 [O][S@]12O[Co]O[S@]3([O])O[Co]4O[C]O[Co@]5(O)O[C]O[Co](O)O[S@@]([O])(O[Co]O[S@@]([O])(O[Co]6O[C]O[Co@@]7(O)O[C]O[Co](O)O[S@]([O])(O[Co]O[S@]([O])(O[Co]8O[C]O[Co@]9(O)O[C]O[Co](O)O[S@@]([O])(O[Co]O[S@@]([O])(O[Co]%10O[C]O[Co@@]%11(O)O[C]O[Co](O)O[S@]([O])(O[Co]O[S@]([O])(O[Co]%12O[C]O[Co@]%13(O)O[C]O[Co](O)O[S@@]([O])(O[Co]O[S@@]([O])(O[Co](O[C]O[Co@@](O)(O[C]O[Co](O)O1)O3)O2)O%13)O%12)O%11)O%10)O9)O8)O7)O6)O5)O4. RCSR code: pcu. The MOF has largest included sphere 10.55 A, density 1.00 g/cm3, surface area 2857.84 m2/g, accessible volume 0.68 cm3/g