Co2C19H6O9CH2CH3CH2CO crystallizes in the trigonal R-3 space group. The structure consists of eighteen 02329_fluka molecules, eighteen 02329_fluka molecules, and eighteen dimethyl ether molecules inside a Co2C19H6O9 framework. In the Co2C19H6O9 framework, there are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a tetrahedral geometry to one O(2), one O(4), one O(7), and one O(9) atom. The Co(1)-O(2) bond length is 1.97 Å. The Co(1)-O(4) bond length is 1.96 Å. The Co(1)-O(7) bond length is 1.96 Å. The Co(1)-O(9) bond length is 1.94 Å. In the second Co site, Co(2) is bonded in a distorted see-saw-like geometry to one O(1), one O(3), one O(6), and one O(8) atom. The Co(2)-O(1) bond length is 2.01 Å. The Co(2)-O(3) bond length is 2.05 Å. The Co(2)-O(6) bond length is 2.06 Å. The Co(2)-O(8) bond length is 1.99 Å. There are nineteen 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 1.49 Å. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.26 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(8) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(8) bond length is 1.39 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 1.38 Å. The C(3)-H(1) bond length is 0.95 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 1.49 Å. The C(4)-C(6) bond length is 1.40 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(5)-O(3) bond length is 1.25 Å. The C(5)-O(4) bond length is 1.28 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(4) and one H(2) atom. The C(6)-H(2) bond length is 0.95 Å. In the seventh C site, C(8) is bonded in a distorted single-bond geometry to one C(2) and one H(3) atom. The C(8)-H(3) bond length is 0.95 Å. In the eighth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(6), and one O(7) atom. The C(12)-C(13) bond length is 1.47 Å. The C(12)-O(6) bond length is 1.25 Å. The C(12)-O(7) bond length is 1.28 Å. In the ninth C site, C(13) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(19) atom. The C(13)-C(14) bond length is 1.39 Å. The C(13)-C(19) bond length is 1.39 Å. In the tenth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(11) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-H(11) bond length is 0.95 Å. In the eleventh C site, C(15) is bonded in a trigonal planar geometry to one C(14), one C(16), and one C(17) atom. The C(15)-C(16) bond length is 1.50 Å. The C(15)-C(17) bond length is 1.39 Å. In the twelfth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(8), and one O(9) atom. The C(16)-O(8) bond length is 1.25 Å. The C(16)-O(9) bond length is 1.26 Å. In the thirteenth C site, C(17) is bonded in a distorted single-bond geometry to one C(15), one C(18), and one H(12) atom. The C(17)-C(18) bond length is 1.37 Å. The C(17)-H(12) bond length is 0.95 Å. In the fourteenth C site, C(18) is bonded in a distorted trigonal planar geometry to one C(17), one C(19), and one O(10) atom. The C(18)-C(19) bond length is 1.39 Å. The C(18)-O(10) bond length is 1.37 Å. In the fifteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(13), one C(18), and one H(13) atom. The C(19)-H(13) bond length is 0.95 Å. In the sixteenth C site, C(20) is bonded in a single-bond geometry to one C(23) and one O(10) atom. The C(20)-C(23) bond length is 1.68 Å. The C(20)-O(10) bond length is 1.41 Å. In the seventeenth C site, C(21) is bonded in a 1-coordinate geometry to one C(22) and one C(23) atom. The C(21)-C(22) bond length is 1.60 Å. The C(21)-C(23) bond length is 0.85 Å. In the eighteenth C site, C(22) is bonded in a 2-coordinate geometry to one C(21) and one C(23) atom. The C(22)-C(23) bond length is 1.51 Å. In the nineteenth C site, C(23) is bonded in a 3-coordinate geometry to one C(20), one C(21), and one C(22) atom. There are six 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(8) atom. In the fourth H site, H(11) is bonded in a single-bond geometry to one C(14) atom. In the fifth H site, H(12) is bonded in a single-bond geometry to one C(17) atom. In the sixth H site, H(13) is bonded in a single-bond geometry to one C(19) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Co(2) 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 distorted bent 150 degrees geometry to one Co(2) and one C(5) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Co(1) and one C(5) atom. In the fifth O site, O(6) is bonded in a bent 150 degrees geometry to one Co(2) and one C(12) atom. In the sixth O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(12) atom. In the seventh O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Co(2) and one C(16) atom. In the eighth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(16) atom. In the ninth O site, O(10) is bonded in a bent 120 degrees geometry to one C(18) and one C(20) atom. Linkers: 18 [C][C][C][C]Oc1cc(C([O])=O)cc(C([O])=O)c1 ,18 CCCOc1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 36 [Co]. The MOF has largest included sphere 6.23 A, density 1.42 g/cm3, surface area 4115.70 m2/g, accessible volume 0.27 cm3/g