CoC13N4H10O3 crystallizes in the triclinic P-1 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent N(3), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing CoN2O4 octahedra. The corner-sharing octahedral tilt angles are 56°. Both Co(1)-N(3) bond lengths are 1.93 Å. Both Co(1)-O(2) bond lengths are 2.31 Å. Both Co(1)-O(3) bond lengths are 1.92 Å. In the second Co site, Co(2) is bonded to two equivalent N(1), two equivalent O(1), and two equivalent O(3) atoms to form corner-sharing CoN2O4 octahedra. The corner-sharing octahedral tilt angles are 56°. Both Co(2)-N(1) bond lengths are 1.93 Å. Both Co(2)-O(1) bond lengths are 2.29 Å. Both Co(2)-O(3) bond lengths are 1.93 Å. There are thirteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(1), and one O(2) atom. The C(1)-C(7) bond length is 1.51 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.27 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(3), one C(7), and one H(1) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(7) bond length is 1.40 Å. The C(2)-H(1) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one N(4) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-N(4) bond length is 1.42 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(2) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(2) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one N(2) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-N(2) bond length is 1.41 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5), one C(7), and one H(3) atom. The C(6)-C(7) bond length is 1.39 Å. The C(6)-H(3) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(6) atom. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(9), one N(2), and one H(4) atom. The C(8)-C(9) bond length is 1.37 Å. The C(8)-N(2) bond length is 1.39 Å. The C(8)-H(4) bond length is 1.08 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(8), one N(1), and one H(5) atom. The C(9)-N(1) bond length is 1.39 Å. The C(9)-H(5) bond length is 1.08 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(6) atom. The C(10)-N(1) bond length is 1.32 Å. The C(10)-N(2) bond length is 1.37 Å. The C(10)-H(6) bond length is 1.08 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one N(3), one N(4), and one H(7) atom. The C(11)-N(3) bond length is 1.33 Å. The C(11)-N(4) bond length is 1.37 Å. The C(11)-H(7) bond length is 1.08 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(13), one N(3), and one H(8) atom. The C(12)-C(13) bond length is 1.37 Å. The C(12)-N(3) bond length is 1.39 Å. The C(12)-H(8) bond length is 1.08 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(12), one N(4), and one H(9) atom. The C(13)-N(4) bond length is 1.39 Å. The C(13)-H(9) bond length is 1.08 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Co(2), one C(10), and one C(9) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(10), one C(5), and one C(8) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Co(1), one C(11), and one C(12) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(3) atom. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(9) 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(12) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(13) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(3) atom. The H(10)-O(3) bond length is 0.97 Å. 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(2) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Co(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Co(1), one Co(2), and one H(10) atom. Linkers: 2 [O]C(=O)c1cc(-n2ccnc2)cc(-n2ccnc2)c1. Metal clusters: 2 [Co]. The MOF has largest included sphere 2.19 A, density 1.82 g/cm3, surface area 3296.23 m2/g, accessible volume 0.09 cm3/g