Co2C15N3H12O8 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one N(1), one O(1), one O(5), one O(8), and two equivalent O(7) atoms to form edge-sharing CoNO5 octahedra. The Co(1)-N(1) bond length is 2.07 Å. The Co(1)-O(1) bond length is 2.01 Å. The Co(1)-O(5) bond length is 2.11 Å. The Co(1)-O(8) bond length is 2.20 Å. There is one shorter (2.03 Å) and one longer (2.09 Å) Co(1)-O(7) bond length. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to one N(2), one O(2), one O(3), one O(4), one O(6), and one O(7) atom. The Co(2)-N(2) bond length is 2.12 Å. The Co(2)-O(2) bond length is 2.05 Å. The Co(2)-O(3) bond length is 2.06 Å. The Co(2)-O(4) bond length is 2.48 Å. The Co(2)-O(6) bond length is 2.02 Å. The Co(2)-O(7) bond length is 2.00 Å. There are fifteen inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(4) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-C(3) bond length is 1.40 Å. The C(1)-C(4) bond length is 1.51 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(4,5) atom. The C(2)-H(4,5) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(1) and one H(4,5) atom. The C(3)-H(4,5) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one N(3), one H(6), and one H(7) atom. The C(4)-N(3) bond length is 1.47 Å. The C(4)-H(6) bond length is 1.10 Å. The C(4)-H(7) bond length is 1.10 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one N(1), one N(3), and one H(8) atom. The C(5)-N(1) bond length is 1.32 Å. The C(5)-N(3) bond length is 1.36 Å. The C(5)-H(8) bond length is 1.08 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one N(2), one N(3), and one H(9) atom. The C(6)-N(2) bond length is 1.32 Å. The C(6)-N(3) bond length is 1.36 Å. The C(6)-H(9) bond length is 1.08 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(12), one C(13), and one C(8) atom. The C(7)-C(12) bond length is 1.40 Å. The C(7)-C(13) bond length is 1.49 Å. The C(7)-C(8) bond length is 1.40 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(7), one C(9), and one H(10) atom. The C(8)-C(9) bond length is 1.40 Å. The C(8)-H(10) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(8) atom. The C(9)-C(10) bond length is 1.40 Å. The C(9)-C(14) bond length is 1.49 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(11), one C(9), and one H(11) atom. The C(10)-C(11) bond length is 1.40 Å. The C(10)-H(11) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(15) atom. The C(11)-C(12) bond length is 1.40 Å. The C(11)-C(15) bond length is 1.50 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(7), and one H(12) atom. The C(12)-H(12) 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(7), one O(1), and one O(2) atom. The C(13)-O(1) bond length is 1.28 Å. The C(13)-O(2) bond length is 1.27 Å. In the fourteenth C site, C(14) is bonded in a bent 120 degrees geometry to one C(9), one O(3), and one O(4) atom. The C(14)-O(3) bond length is 1.28 Å. The C(14)-O(4) bond length is 1.28 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(5), and one O(6) atom. The C(15)-O(5) bond length is 1.28 Å. The C(15)-O(6) bond length is 1.28 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Co(1), one C(5), and one N(2) atom. The N(1)-N(2) bond length is 1.38 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Co(2), one C(6), and one N(1) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(4), one C(5), and one C(6) atom. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(7) atom. The H(1)-O(7) bond length is 0.97 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(8) atom. The H(2)-O(8) bond length is 0.98 Å. In the third H site, H(3) is bonded in a distorted single-bond geometry to one O(8) atom. The H(3)-O(8) bond length is 1.00 Å. In the fourth H site, H(4,5) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(4) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(4) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(5) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(6) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(8) atom. In the tenth H site, H(11) is bonded in a single-bond geometry to one C(10) atom. In the eleventh H site, H(12) is bonded in a single-bond geometry to one C(12) atom. There are eight 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(13) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Co(2) and one C(13) atom. In the third O site, O(3) is bonded in a water-like geometry to one Co(2) and one C(14) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to one Co(2) and one C(14) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Co(1) and one C(15) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Co(2) and one C(15) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Co(2), two equivalent Co(1), and one H(1) atom. In the eighth O site, O(8) is bonded in a distorted water-like geometry to one Co(1), one H(2), and one H(3) atom. Linkers: 2 c1cc(Cn2cnnc2)ccc1Cn1cnnc1 ,4 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 2 O.O.O=[C]O[Co]12(O)[N][N][Co]3O[C]O[Co](O)(O[C]=O)([N][N][Co](O[C]O1)O[C]O2)O[C]O3. The MOF has largest included sphere 4.43 A, density 1.47 g/cm3, surface area 3596.70 m2/g, accessible volume 0.31 cm3/g