CoC8H6(N2O)2 crystallizes in the tetragonal I-42d space group. Co(1) is bonded in a tetrahedral geometry to four equivalent N(1) atoms. All Co(1)-N(1) bond lengths are 1.98 Å. There are three inequivalent C sites. In the first C site, C(2) is bonded in a distorted trigonal planar geometry to two equivalent C(3) and one H(1) atom. Both C(2)-C(3) bond lengths are 1.39 Å. The C(2)-H(1) bond length is 1.09 Å. In the second C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(2), one N(1), and one H(2) atom. The C(3)-N(1) bond length is 1.34 Å. The C(3)-H(2) bond length is 1.09 Å. In the third C site, C(1) is bonded in a trigonal planar geometry to two equivalent N(1) and one O(1) atom. Both C(1)-N(1) bond lengths are 1.39 Å. The C(1)-O(1) bond length is 1.25 Å. N(1) is bonded in a trigonal planar geometry to one Co(1), one C(1), and one C(3) atom. There are two 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(3) atom. O(1) is bonded in a single-bond geometry to one C(1) atom. Linkers: 4 O=C1N=C[CH]C=N1. Metal clusters: 2 [Co]. The MOF has largest included sphere 2.37 A, density 1.79 g/cm3, surface area 3752.88 m2/g, accessible volume 0.13 cm3/g