CoC19H11(NO3)2 crystallizes in the orthorhombic Amm2 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(1), two equivalent O(1), and two equivalent O(4) atoms. Both Co(1)-N(1) bond lengths are 1.91 Å. Both Co(1)-O(1) bond lengths are 1.91 Å. Both Co(1)-O(4) bond lengths are 2.05 Å. In the second Co site, Co(2) is bonded in an octahedral geometry to two equivalent N(2), one O(2), one O(3), one O(5), and one O(6) atom. Both Co(2)-N(2) bond lengths are 1.91 Å. The Co(2)-O(2) bond length is 1.91 Å. The Co(2)-O(3) bond length is 1.91 Å. The Co(2)-O(5) bond length is 2.05 Å. The Co(2)-O(6) bond length is 2.04 Å. There are twenty-one inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(14,15) and two equivalent C(9,10) atoms. The C(1)-C(14,15) bond length is 1.50 Å. Both C(1)-C(9,10) bond lengths are 1.41 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(14,15) and two equivalent C(9,10) atoms. The C(2)-C(14,15) bond length is 1.50 Å. Both C(2)-C(9,10) bond lengths are 1.41 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(21), one C(6), and one C(7) atom. The C(3)-C(21) bond length is 1.51 Å. The C(3)-C(6) bond length is 1.40 Å. The C(3)-C(7) bond length is 1.39 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(22), one C(7), and one C(8) atom. The C(4)-C(22) bond length is 1.51 Å. The C(4)-C(7) bond length is 1.40 Å. The C(4)-C(8) bond length is 1.39 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(23), one C(6), and one C(8) atom. The C(5)-C(23) bond length is 1.51 Å. The C(5)-C(6) bond length is 1.39 Å. The C(5)-C(8) bond length is 1.40 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(1) atom. The C(6)-H(1) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(3), one C(4), and one H(2) atom. The C(7)-H(2) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(4), one C(5), and one H(3) atom. The C(8)-H(3) bond length is 1.09 Å. In the ninth C site, C(9,10) is bonded in a distorted single-bond geometry to one C(1); one C(2); and one H(4,5) atom. The C(9,10)-H(4,5) bond length is 1.09 Å. In the tenth C site, C(11) is bonded in a distorted trigonal planar geometry to one C(16), one C(19), and one H(6) atom. The C(11)-C(16) bond length is 1.39 Å. The C(11)-C(19) bond length is 1.41 Å. The C(11)-H(6) bond length is 1.09 Å. In the eleventh C site, C(12) is bonded in a distorted trigonal planar geometry to one C(17), one C(20), and one H(7) atom. The C(12)-C(17) bond length is 1.39 Å. The C(12)-C(20) bond length is 1.41 Å. The C(12)-H(7) bond length is 1.09 Å. In the twelfth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(18), one C(20), and one H(8) atom. The C(13)-C(18) bond length is 1.39 Å. The C(13)-C(20) bond length is 1.40 Å. The C(13)-H(8) bond length is 1.09 Å. In the thirteenth C site, C(14,15) is bonded in a bent 120 degrees geometry to one C(1) and two equivalent O(4) atoms. Both C(14,15)-O(4) bond lengths are 1.29 Å. In the fourteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(11); one N(1); and one H(9,10) atom. The C(16)-N(1) bond length is 1.35 Å. The C(16)-H(9,10) bond length is 1.09 Å. In the fifteenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(12); one N(2); and one H(9,10) atom. The C(17)-N(2) bond length is 1.35 Å. The C(17)-H(9,10) bond length is 1.09 Å. In the sixteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(13), one N(2), and one H(11) atom. The C(18)-N(2) bond length is 1.35 Å. The C(18)-H(11) bond length is 1.09 Å. In the seventeenth C site, C(19) is bonded in a trigonal planar geometry to one C(19) and two equivalent C(11) atoms. The C(19)-C(19) bond length is 1.48 Å. In the eighteenth C site, C(20) is bonded in a trigonal planar geometry to one C(12), one C(13), and one C(20) atom. The C(20)-C(20) bond length is 1.48 Å. In the nineteenth C site, C(21) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(7) atom. The C(21)-O(1) bond length is 1.33 Å. The C(21)-O(7) bond length is 1.22 Å. In the twentieth C site, C(22) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(2), and one O(8) atom. The C(22)-O(2) bond length is 1.33 Å. The C(22)-O(8) bond length is 1.22 Å. In the twenty-first C site, C(23) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(9) atom. The C(23)-O(3) bond length is 1.33 Å. The C(23)-O(9) bond length is 1.22 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Co(1) and two equivalent C(16) atoms. In the second N site, N(2) is bonded in a trigonal planar geometry to one Co(2), one C(17), and one C(18) atom. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(6) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(7) 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(4,5) is bonded in a single-bond geometry to one C(9,10) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(11) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(12) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(13) atom. In the eighth H site, H(9,10) is bonded in a single-bond geometry to one C(16) atom. In the ninth H site, H(11) is bonded in a single-bond geometry to one C(18) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Co(1) and one C(21) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Co(2) and one C(22) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Co(2) and one C(23) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one Co(1) and one C(14,15) atom. In the fifth O site, O(5) is bonded in an L-shaped geometry to one Co(2) and one C(14,15) atom. The O(5)-C(14,15) bond length is 1.29 Å. In the sixth O site, O(6) is bonded in an L-shaped geometry to one Co(2) and one C(14,15) atom. The O(6)-C(14,15) bond length is 1.29 Å. In the seventh O site, O(7) is bonded in a single-bond geometry to one C(21) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one C(22) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one C(23) atom. Linkers: 3 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1 ,2 c1cc(-c2ccncc2)ccn1. Metal clusters: 1 [Co] ,2 O=[C]O[Co]1(O[C]=O)O[C]O1. RCSR code: hcb. The MOF has largest included sphere 7.48 A, density 0.82 g/cm3, surface area 4335.57 m2/g, accessible volume 0.76 cm3/g