Co2C44N6H28O5 crystallizes in the tetragonal I4_1/a space group. Co(1) is bonded to one N(1), one N(3), one O(1), one O(2), and one O(3) atom to form corner-sharing CoN2O3 square pyramids. The Co(1)-N(1) bond length is 2.15 Å. The Co(1)-N(3) bond length is 2.18 Å. The Co(1)-O(1) bond length is 2.05 Å. The Co(1)-O(2) bond length is 2.11 Å. The Co(1)-O(3) bond length is 2.04 Å. There are twenty-two inequivalent C sites. In the first C site, C(13) is bonded in a single-bond geometry to one C(6) and one H(12) atom. The C(13)-C(6) bond length is 1.38 Å. The C(13)-H(12) bond length is 0.93 Å. In the second C site, C(14) is bonded in a distorted single-bond geometry to one C(15) and one H(10) atom. The C(14)-C(15) bond length is 1.32 Å. The C(14)-H(10) bond length is 0.93 Å. In the third C site, C(15) is bonded in a trigonal planar geometry to one C(14), one C(2), and one C(5) atom. The C(15)-C(2) bond length is 1.35 Å. The C(15)-C(5) bond length is 1.49 Å. In the fourth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(18), one C(9), and one N(2) atom. The C(16)-C(18) bond length is 1.48 Å. The C(16)-C(9) bond length is 1.38 Å. The C(16)-N(2) bond length is 1.34 Å. In the fifth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(14) atom. The C(17)-N(1) bond length is 1.34 Å. The C(17)-H(14) bond length is 0.93 Å. In the sixth C site, C(18) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(16) atom. The C(18)-C(10) bond length is 1.38 Å. The C(18)-C(12) bond length is 1.39 Å. In the seventh C site, C(19) is bonded in a distorted bent 120 degrees geometry to one C(12), one N(1), and one H(1) atom. The C(19)-C(12) bond length is 1.36 Å. The C(19)-N(1) bond length is 1.33 Å. The C(19)-H(1) bond length is 0.93 Å. In the eighth C site, C(20) is bonded in a trigonal planar geometry to one C(3), one C(7), and one C(9) atom. The C(20)-C(3) bond length is 1.49 Å. The C(20)-C(7) bond length is 1.39 Å. The C(20)-C(9) bond length is 1.41 Å. In the ninth C site, C(21) is bonded in a bent 120 degrees geometry to one C(2), one N(3), and one H(9) atom. The C(21)-C(2) bond length is 1.39 Å. The C(21)-N(3) bond length is 1.30 Å. The C(21)-H(9) bond length is 0.93 Å. In the tenth C site, C(22) is bonded in a distorted bent 120 degrees geometry to one N(3) and one H(8) atom. The C(22)-N(3) bond length is 1.28 Å. The C(22)-H(8) bond length is 0.93 Å. In the eleventh C site, C(1) is bonded in a distorted single-bond geometry to one C(11), one C(3), and one H(2) atom. The C(1)-C(11) bond length is 1.37 Å. The C(1)-C(3) bond length is 1.37 Å. The C(1)-H(2) bond length is 0.93 Å. In the twelfth C site, C(2) is bonded in a distorted trigonal planar geometry to one C(15), one C(21), and one H(11) atom. The C(2)-H(11) bond length is 0.93 Å. In the thirteenth C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(20), and one C(8) atom. The C(3)-C(8) bond length is 1.38 Å. In the fourteenth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(2) atom. The C(4)-C(6) bond length is 1.51 Å. The C(4)-O(1) bond length is 1.27 Å. The C(4)-O(2) bond length is 1.24 Å. In the fifteenth C site, C(5) is bonded in a trigonal planar geometry to one C(15), one C(7), and one N(2) atom. The C(5)-C(7) bond length is 1.36 Å. The C(5)-N(2) bond length is 1.36 Å. In the sixteenth C site, C(6) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(4) atom. The C(6)-C(11) bond length is 1.36 Å. In the seventeenth C site, C(7) is bonded in a distorted single-bond geometry to one C(20), one C(5), and one H(5) atom. The C(7)-H(5) bond length is 0.93 Å. In the eighteenth C site, C(8) is bonded in a distorted single-bond geometry to one C(3) and one H(13) atom. The C(8)-H(13) bond length is 0.93 Å. In the nineteenth C site, C(9) is bonded in a distorted single-bond geometry to one C(16), one C(20), and one H(4) atom. The C(9)-H(4) bond length is 0.93 Å. In the twentieth C site, C(10) is bonded in a distorted single-bond geometry to one C(18) and one H(6) atom. The C(10)-H(6) bond length is 0.93 Å. In the twenty-first C site, C(11) is bonded in a distorted trigonal planar geometry to one C(1), one C(6), and one H(7) atom. The C(11)-H(7) bond length is 0.93 Å. In the twenty-second C site, C(12) is bonded in a distorted trigonal planar geometry to one C(18), one C(19), and one H(3) atom. The C(12)-H(3) bond length is 0.93 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Co(1), one C(17), and one C(19) atom. In the second N site, N(2) is bonded in a bent 120 degrees geometry to one C(16) and one C(5) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Co(1), one C(21), and one C(22) atom. There are fourteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(19) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(12) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(9) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(10) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(11) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(22) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(21) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(14) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(2) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(13) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(8) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(17) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(4) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(4) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent Co(1) atoms. Linkers: 8 [O]C(=O)c1ccc(-c2cc(-c3ccncc3)nc(-c3ccncc3)c2)cc1. Metal clusters: 4 [C]1O[Co]2O[C]O[Co](O1)O2. The MOF has largest included sphere 14.70 A, density 0.48 g/cm3, surface area 4584.42 m2/g, accessible volume 1.70 cm3/g