Co2C11H9(N2O)4CH crystallizes in the tetragonal I4/m space group. The structure consists of eight 02329_fluka molecules inside a Co2C11H9(N2O)4 framework. In the Co2C11H9(N2O)4 framework, Co(1) is bonded in a distorted square pyramidal geometry to one N(1), one N(2), one N(4), one O(1), and one O(2) atom. The Co(1)-N(1) bond length is 2.01 Å. The Co(1)-N(2) bond length is 2.07 Å. The Co(1)-N(4) bond length is 2.06 Å. The Co(1)-O(1) bond length is 2.31 Å. The Co(1)-O(2) bond length is 2.09 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.24 Å. The C(1)-O(2) bond length is 1.28 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(6) atom. The C(2)-C(3) bond length is 1.41 Å. The C(2)-C(6) bond length is 1.38 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(1) atom. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one N(2), one N(4), and one H(2) atom. The C(4)-N(2) bond length is 1.34 Å. The C(4)-N(4) bond length is 1.31 Å. The C(4)-H(2) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one N(1), one N(2), and one N(3) atom. The C(5)-N(1) bond length is 1.33 Å. The C(5)-N(2) bond length is 1.35 Å. The C(5)-N(3) bond length is 1.37 Å. In the sixth C site, C(6) is bonded in a single-bond geometry to two equivalent C(2) and one H(5) atom. The C(6)-H(5) bond length is 0.93 Å. There are four 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(4) atom. The N(1)-N(4) bond length is 1.39 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one Co(1), one C(4), and one C(5) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one C(5), one H(3), and one H(4) atom. The N(3)-H(3) bond length is 0.86 Å. The N(3)-H(4) bond length is 0.86 Å. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one Co(1), one C(4), and one N(1) atom. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) 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 N(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one N(3) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(6) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Co(1) and one C(1) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Co(1) and one C(1) atom. Linkers: 8 [O]C(=O)c1cccc(C([O])=O)c1 ,4 NC1=[N]=CN=N1 ,4 NC1=NN=C[N]1 ,8 NC1=N[N]C=N1. Metal clusters: 8 [C]1O[Co]2(N=N[Co]3(N=N2)O[C]O3)O1. The MOF has largest included sphere 5.35 A, density 1.51 g/cm3, surface area 3604.51 m2/g, accessible volume 0.24 cm3/g