CoC20H14(NO)5 crystallizes in the triclinic P-1 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in an octahedral geometry to two equivalent N(5), two equivalent O(2), and two equivalent O(4) atoms. Both Co(1)-N(5) bond lengths are 2.05 Å. Both Co(1)-O(2) bond lengths are 2.16 Å. Both Co(1)-O(4) bond lengths are 2.07 Å. In the second Co site, Co(2) is bonded in a distorted octahedral geometry to two equivalent N(4), two equivalent O(1), and two equivalent O(5) atoms. Both Co(2)-N(4) bond lengths are 1.94 Å. Both Co(2)-O(1) bond lengths are 1.90 Å. Both Co(2)-O(5) bond lengths are 2.41 Å. There are twenty inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(5), one N(4), and one H(4) atom. The C(1)-C(5) bond length is 1.38 Å. The C(1)-N(4) bond length is 1.35 Å. The C(1)-H(4) bond length is 1.08 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3), one N(4), and one H(5) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-N(4) bond length is 1.35 Å. The C(2)-H(5) bond length is 1.08 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(6) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(6) bond length is 1.09 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 1.40 Å. The C(4)-C(6) bond length is 1.45 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(1), one C(4), and one H(7) atom. The C(5)-H(7) bond length is 1.08 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one N(3) atom. The C(6)-N(1) bond length is 1.36 Å. The C(6)-N(3) bond length is 1.33 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(8), one N(2), and one N(3) atom. The C(7)-C(8) bond length is 1.45 Å. The C(7)-N(2) bond length is 1.35 Å. The C(7)-N(3) bond length is 1.36 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(12), one C(7), and one C(9) atom. The C(8)-C(12) bond length is 1.40 Å. The C(8)-C(9) bond length is 1.40 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(10), one C(8), and one H(8) atom. The C(9)-C(10) bond length is 1.38 Å. The C(9)-H(8) bond length is 1.09 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(9), one N(5), and one H(9) atom. The C(10)-N(5) bond length is 1.35 Å. The C(10)-H(9) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal planar geometry to one C(12), one N(5), and one H(10) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-N(5) bond length is 1.35 Å. The C(11)-H(10) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(8), and one H(11) atom. The C(12)-H(11) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(3), and one O(4) atom. The C(13)-C(14) bond length is 1.52 Å. The C(13)-O(3) bond length is 1.26 Å. The C(13)-O(4) bond length is 1.28 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(13), one C(15), and one C(19) atom. The C(14)-C(15) bond length is 1.40 Å. The C(14)-C(19) bond length is 1.41 Å. In the fifteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(14) and one H(12) atom. The C(15)-H(12) bond length is 1.09 Å. In the sixteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(17) and one H(13) atom. The C(16)-C(17) bond length is 1.41 Å. The C(16)-H(13) bond length is 1.09 Å. In the seventeenth C site, C(17) is bonded in a trigonal planar geometry to one C(16), one C(17), and one C(18) atom. The C(17)-C(17) bond length is 1.49 Å. The C(17)-C(18) bond length is 1.40 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(17), one C(19), and one H(14) atom. The C(18)-C(19) bond length is 1.40 Å. The C(18)-H(14) bond length is 1.09 Å. In the nineteenth C site, C(19) is bonded in a trigonal planar geometry to one C(14), one C(18), and one C(20) atom. The C(19)-C(20) bond length is 1.50 Å. In the twentieth C site, C(20) is bonded in a distorted bent 120 degrees geometry to one C(19), one O(1), and one O(2) atom. The C(20)-O(1) bond length is 1.29 Å. The C(20)-O(2) bond length is 1.27 Å. There are five inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one C(6), one N(2), and one H(3) atom. The N(1)-N(2) bond length is 1.35 Å. The N(1)-H(3) bond length is 1.03 Å. In the second N site, N(2) is bonded in a water-like geometry to one C(7) and one N(1) atom. In the third N site, N(3) is bonded in a water-like geometry to one C(6) and one C(7) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Co(2), one C(1), and one C(2) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one Co(1), one C(10), and one C(11) atom. There are fourteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(2) and one O(5) atom. The H(1)-O(2) bond length is 1.73 Å. The H(1)-O(5) bond length is 1.00 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 1.01 Å. In the third H site, H(3) is bonded in a single-bond geometry to one N(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(1) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(2) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(3) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(5) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(9) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(10) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(11) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(12) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(15) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(16) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(18) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one C(20) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Co(1), one C(20), and one H(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one C(13) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one C(13) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Co(2), one H(1), and one H(2) atom. Linkers: 1 [O]C(=O)c1ccc(-c2ccc(C([O])=O)c(C([O])=O)c2)cc1C([O])=O ,2 c1cc(-c2n[nH]c(-c3ccncc3)n2)ccn1. Metal clusters: 2 [Co]. The MOF has largest included sphere 2.09 A, density 1.75 g/cm3, surface area 3645.66 m2/g, accessible volume 0.13 cm3/g