Co3C28H24(NO9)2 crystallizes in the triclinic P1 space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in an octahedral geometry to one N(1,2); one O(1); one O(13,14); one O(5,6); one O(7,8); and one O(9,10) atom. The Co(1)-N(1,2) bond length is 2.05 Å. The Co(1)-O(1) bond length is 2.07 Å. The Co(1)-O(13,14) bond length is 2.17 Å. The Co(1)-O(5,6) bond length is 2.04 Å. The Co(1)-O(7,8) bond length is 2.23 Å. The Co(1)-O(9,10) bond length is 2.08 Å. In the second Co site, Co(2) is bonded in an octahedral geometry to one N(1,2); one O(13,14); one O(2); one O(5,6); one O(7,8); and one O(9,10) atom. The Co(2)-N(1,2) bond length is 2.05 Å. The Co(2)-O(13,14) bond length is 2.17 Å. The Co(2)-O(2) bond length is 2.07 Å. The Co(2)-O(5,6) bond length is 2.04 Å. The Co(2)-O(7,8) bond length is 2.23 Å. The Co(2)-O(9,10) bond length is 2.08 Å. In the third Co site, Co(3) is bonded in an octahedral geometry to one O(15), one O(16), one O(17), one O(18), one O(3), and one O(4) atom. The Co(3)-O(15) bond length is 2.04 Å. The Co(3)-O(16) bond length is 2.04 Å. The Co(3)-O(17) bond length is 2.18 Å. The Co(3)-O(18) bond length is 2.18 Å. The Co(3)-O(3) bond length is 2.07 Å. The Co(3)-O(4) bond length is 2.07 Å. There are twenty-one inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(3) atom. The C(1)-C(3) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(3) bond length is 1.26 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(2), and one O(4) atom. The C(2)-C(4) bond length is 1.49 Å. The C(2)-O(2) bond length is 1.28 Å. The C(2)-O(4) bond length is 1.26 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(1); one C(11,12); and one N(1,2) atom. The C(3)-C(11,12) bond length is 1.39 Å. The C(3)-N(1,2) bond length is 1.35 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(11,12); one C(2); and one N(1,2) atom. The C(4)-C(11,12) bond length is 1.39 Å. The C(4)-N(1,2) bond length is 1.35 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(7,8); one N(1,2); and one H(13,14) atom. The C(5)-C(7,8) bond length is 1.40 Å. The C(5)-N(1,2) bond length is 1.34 Å. The C(5)-H(13,14) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(7,8); one N(1,2); and one H(13,14) atom. The C(6)-C(7,8) bond length is 1.40 Å. The C(6)-N(1,2) bond length is 1.34 Å. The C(6)-H(13,14) bond length is 1.09 Å. In the seventh C site, C(7,8) is bonded in a trigonal planar geometry to one C(13), one C(5), and one C(9) atom. The C(7,8)-C(13) bond length is 1.47 Å. The C(7,8)-C(9) bond length is 1.41 Å. In the eighth C site, C(9) is bonded in a distorted single-bond geometry to one C(11,12); one C(7,8); and one H(15,16) atom. The C(9)-C(11,12) bond length is 1.39 Å. The C(9)-H(15,16) bond length is 1.09 Å. In the ninth C site, C(10) is bonded in a distorted single-bond geometry to one C(11,12); one C(7,8); and one H(15,16) atom. The C(10)-C(11,12) bond length is 1.39 Å. The C(10)-C(7,8) bond length is 1.41 Å. The C(10)-H(15,16) bond length is 1.09 Å. In the tenth C site, C(11,12) is bonded in a distorted single-bond geometry to one C(3); one C(9); and one H(17,18) atom. The C(11,12)-H(17,18) bond length is 1.09 Å. In the eleventh C site, C(13) is bonded in a trigonal planar geometry to one C(15,16); one C(27,28); and one C(7,8) atom. The C(13)-C(15,16) bond length is 1.41 Å. The C(13)-C(27,28) bond length is 1.40 Å. In the twelfth C site, C(14) is bonded in a trigonal planar geometry to one C(15,16); one C(27,28); and one C(7,8) atom. The C(14)-C(15,16) bond length is 1.41 Å. The C(14)-C(27,28) bond length is 1.40 Å. The C(14)-C(7,8) bond length is 1.47 Å. In the thirteenth C site, C(15,16) is bonded in a distorted single-bond geometry to one C(13); one C(17,18); and one H(19,20) atom. The C(15,16)-C(17,18) bond length is 1.40 Å. The C(15,16)-H(19,20) bond length is 1.09 Å. In the fourteenth C site, C(17,18) is bonded in a trigonal planar geometry to one C(15,16); one C(19); and one C(21,22) atom. The C(17,18)-C(19) bond length is 1.51 Å. The C(17,18)-C(21,22) bond length is 1.40 Å. In the fifteenth C site, C(19) is bonded in a distorted bent 120 degrees geometry to one C(17,18); one O(11,12); and one O(9,10) atom. The C(19)-O(11,12) bond length is 1.26 Å. The C(19)-O(9,10) bond length is 1.29 Å. In the sixteenth C site, C(20) is bonded in a distorted bent 120 degrees geometry to one C(17,18); one O(11,12); and one O(9,10) atom. The C(20)-C(17,18) bond length is 1.51 Å. The C(20)-O(11,12) bond length is 1.26 Å. The C(20)-O(9,10) bond length is 1.29 Å. In the seventeenth C site, C(21,22) is bonded in a distorted single-bond geometry to one C(17,18); one C(23,24); and one H(21,22) atom. The C(21,22)-C(23,24) bond length is 1.40 Å. The C(21,22)-H(21,22) bond length is 1.09 Å. In the eighteenth C site, C(23,24) is bonded in a trigonal planar geometry to one C(21,22); one C(25); and one C(27,28) atom. The C(23,24)-C(25) bond length is 1.49 Å. The C(23,24)-C(27,28) bond length is 1.39 Å. In the nineteenth C site, C(25) is bonded in a distorted bent 120 degrees geometry to one C(23,24); one O(5,6); and one O(7,8) atom. The C(25)-O(5,6) bond length is 1.27 Å. The C(25)-O(7,8) bond length is 1.28 Å. In the twentieth C site, C(26) is bonded in a distorted bent 120 degrees geometry to one C(23,24); one O(5,6); and one O(7,8) atom. The C(26)-C(23,24) bond length is 1.49 Å. The C(26)-O(5,6) bond length is 1.27 Å. The C(26)-O(7,8) bond length is 1.28 Å. In the twenty-first C site, C(27,28) is bonded in a distorted single-bond geometry to one C(13); one C(23,24); and one H(23,24) atom. The C(27,28)-H(23,24) bond length is 1.09 Å. N(1,2) is bonded in a trigonal planar geometry to one Co(1), one C(3), and one C(5) atom. There are eighteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(13,14) atom. The H(1)-O(13,14) bond length is 0.98 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(13,14) atom. The H(2)-O(13,14) bond length is 0.98 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(13,14) atom. The H(3)-O(13,14) bond length is 1.00 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(13,14) atom. The H(4)-O(13,14) bond length is 1.00 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(15) atom. The H(5)-O(15) bond length is 1.00 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(16) atom. The H(6)-O(16) bond length is 1.00 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(15) and one O(7,8) atom. The H(7)-O(15) bond length is 1.00 Å. The H(7)-O(7,8) bond length is 1.71 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(16) and one O(7,8) atom. The H(8)-O(16) bond length is 1.00 Å. The H(8)-O(7,8) bond length is 1.71 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(17) atom. The H(9)-O(17) bond length is 0.99 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(18) atom. The H(10)-O(18) bond length is 0.99 Å. In the eleventh H site, H(11) is bonded in a single-bond geometry to one O(17) atom. The H(11)-O(17) bond length is 0.99 Å. In the twelfth H site, H(12) is bonded in a single-bond geometry to one O(18) atom. The H(12)-O(18) bond length is 0.99 Å. In the thirteenth H site, H(13,14) is bonded in a single-bond geometry to one C(5) atom. In the fourteenth H site, H(15,16) is bonded in a single-bond geometry to one C(9) atom. In the fifteenth H site, H(17,18) is bonded in a single-bond geometry to one C(11,12) atom. In the sixteenth H site, H(19,20) is bonded in a single-bond geometry to one C(15,16) atom. In the seventeenth H site, H(21,22) is bonded in a single-bond geometry to one C(21,22) atom. In the eighteenth H site, H(23,24) is bonded in a single-bond geometry to one C(27,28) atom. There are thirteen 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 bent 120 degrees geometry to one Co(2) and one C(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Co(3) and one C(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Co(3) and one C(2) atom. In the fifth O site, O(5,6) is bonded in a bent 120 degrees geometry to one Co(2) and one C(25) atom. In the sixth O site, O(7,8) is bonded in a distorted single-bond geometry to one Co(1), one C(25), and one H(7) atom. In the seventh O site, O(9,10) is bonded in a 2-coordinate geometry to one Co(2) and one C(19) atom. In the eighth O site, O(11,12) is bonded in a single-bond geometry to one C(19) atom. In the ninth O site, O(13,14) is bonded in a distorted water-like geometry to one Co(1), one H(1), and one H(3) atom. In the tenth O site, O(15) is bonded in a distorted water-like geometry to one Co(3), one H(5), and one H(7) atom. In the eleventh O site, O(16) is bonded in a distorted water-like geometry to one Co(3), one H(6), and one H(8) atom. In the twelfth O site, O(17) is bonded in a distorted water-like geometry to one Co(3), one H(11), and one H(9) atom. In the thirteenth O site, O(18) is bonded in a distorted water-like geometry to one Co(3), one H(10), and one H(12) atom. Linkers: 2 [O]C(=O)c1cc(C([O])=O)cc(-c2ccc(C([O])=O)nc2)c1. Metal clusters: 3 [Co]. The MOF has largest included sphere 3.20 A, density 1.84 g/cm3, surface area 3145.97 m2/g, accessible volume 0.13 cm3/g