CoC6H6(N2O)2 crystallizes in the trigonal R-3 space group. Co(1) is bonded in a distorted trigonal bipyramidal 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 2.15 Å. The Co(1)-N(2) bond length is 2.04 Å. The Co(1)-N(4) bond length is 1.96 Å. The Co(1)-O(1) bond length is 2.12 Å. The Co(1)-O(2) bond length is 1.98 Å. There are six inequivalent C sites. In the first C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3), one N(3), and one O(1) atom. The C(2)-C(3) bond length is 1.46 Å. The C(2)-N(3) bond length is 1.33 Å. The C(2)-O(1) bond length is 1.29 Å. In the second C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one N(2) atom. The C(3)-N(2) bond length is 1.38 Å. In the third C site, C(4) is bonded in a distorted single-bond geometry to one N(1) atom. The C(4)-N(1) bond length is 1.38 Å. In the fourth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one N(4) and one O(2) atom. The C(5)-N(4) bond length is 1.32 Å. The C(5)-O(2) bond length is 1.30 Å. In the fifth C site, C(6) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one H(4), one H(5), and one H(6) atom. The C(6)-C(1) bond length is 1.49 Å. The C(6)-H(4) bond length is 1.10 Å. The C(6)-H(5) bond length is 1.10 Å. The C(6)-H(6) bond length is 1.10 Å. In the sixth C site, C(1) is bonded in a distorted trigonal planar geometry to one C(6), one N(1), and one N(2) atom. The C(1)-N(1) bond length is 1.36 Å. The C(1)-N(2) bond length is 1.35 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Co(1), one C(1), and one C(4) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Co(1), one C(1), and one C(3) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(2), one H(1), and one H(2) atom. The N(3)-H(1) bond length is 1.03 Å. The N(3)-H(2) bond length is 1.03 Å. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Co(1), one C(5), and one H(3) atom. The N(4)-H(3) bond length is 1.03 Å. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one N(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one N(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(6) atom. In the sixth H site, H(6) 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 bent 120 degrees geometry to one Co(1) and one C(2) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(5) atom. Linkers: 3 CC1=N[C](C(N)=O)C(C([NH])=O)=N1 ,3 CC1=NC(C([NH])=O)=C(C(N)=O)[N]1. Metal clusters: 6 [Co]. The MOF has largest included sphere 7.75 A, density 1.32 g/cm3, surface area 3453.81 m2/g, accessible volume 0.36 cm3/g