CoC11N2H10O5 crystallizes in the tetragonal P4_322 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 70°. Both Co(1)-O(1) bond lengths are 2.06 Å. Both Co(1)-O(2) bond lengths are 2.03 Å. Both Co(1)-O(5) bond lengths are 2.21 Å. In the second Co site, Co(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 70°. Both Co(2)-O(3) bond lengths are 2.05 Å. Both Co(2)-O(4) bond lengths are 2.07 Å. Both Co(2)-O(5) bond lengths are 2.14 Å. There are eleven inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one O(5) atom. The C(1)-N(1) bond length is 1.35 Å. The C(1)-N(2) bond length is 1.33 Å. The C(1)-O(5) bond length is 1.27 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(4), one C(7), and one C(8) atom. The C(2)-C(4) bond length is 1.51 Å. The C(2)-C(7) bond length is 1.37 Å. The C(2)-C(8) bond length is 1.40 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(4) atom. The C(3)-C(6) bond length is 1.52 Å. The C(3)-O(1) bond length is 1.25 Å. The C(3)-O(4) bond length is 1.26 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(2), and one O(3) atom. The C(4)-O(2) bond length is 1.25 Å. The C(4)-O(3) bond length is 1.27 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(6) and one H(2) atom. The C(5)-C(6) bond length is 1.41 Å. The C(5)-H(2) bond length is 0.93 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(9) atom. The C(6)-C(9) bond length is 1.38 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(2) and one H(3) atom. The C(7)-H(3) bond length is 0.93 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(2), one C(9), and one H(4) atom. The C(8)-C(9) bond length is 1.37 Å. The C(8)-H(4) bond length is 0.93 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(6), one C(8), and one H(6) atom. The C(9)-H(6) bond length is 0.93 Å. In the tenth C site, C(10) is bonded in a 3-coordinate geometry to one N(2), one H(7), and one H(8) atom. The C(10)-N(2) bond length is 1.46 Å. The C(10)-H(7) bond length is 0.97 Å. The C(10)-H(8) bond length is 0.97 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal non-coplanar geometry to one N(1) and two equivalent H(9,10) atoms. The C(11)-N(1) bond length is 1.44 Å. Both C(11)-H(9,10) bond lengths are 0.97 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one C(1), one C(11), and one H(1) atom. The N(1)-H(1) bond length is 0.86 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(1), one C(10), and one H(5) atom. The N(2)-H(5) bond length is 0.86 Å. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) 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 N(2) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(10) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(10) atom. In the ninth H site, H(9,10) is bonded in a single-bond geometry to one C(11) 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(1) and one C(3) 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 one Co(2) and one C(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Co(2) and one C(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(1) atom. Linkers: 8 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 8 [Co]. The MOF has largest included sphere 5.86 A, density 1.27 g/cm3, surface area 3808.51 m2/g, accessible volume 0.31 cm3/g