CoH12(C5N2)2 crystallizes in the tetragonal P-42c space group. Co(1) is bonded in a tetrahedral geometry to four equivalent N(1) atoms. All Co(1)-N(1) bond lengths are 1.97 Å. There are three inequivalent C sites. In the first C site, C(3) is bonded in a distorted trigonal non-coplanar geometry to one C(2), one H(1), one H(2), and one H(3) atom. The C(3)-C(2) bond length is 1.49 Å. The C(3)-H(1) bond length is 1.10 Å. The C(3)-H(2) bond length is 1.10 Å. The C(3)-H(3) bond length is 1.10 Å. In the second C site, C(1) is bonded in a trigonal planar geometry to one C(1) and two equivalent C(2) atoms. The C(1)-C(1) bond length is 1.45 Å. Both C(1)-C(2) bond lengths are 1.41 Å. In the third C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one N(1) atom. The C(2)-N(1) bond length is 1.35 Å. N(1) is bonded in a distorted trigonal planar geometry to one Co(1), one C(2), and one N(1) atom. The N(1)-N(1) bond length is 1.38 Å. There are three 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(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. Linkers: 1 CC1=NN=C(C)[C]1C1=C(C)[N]N=C1C ,1 CC1=NN=C(C)[C]1[C]1C(C)=NN=C1C. Metal clusters: 2 [Co]. The MOF has largest included sphere 3.73 A, density 1.48 g/cm3, surface area 4635.23 m2/g, accessible volume 0.17 cm3/g