CoH6(C5N2)2 crystallizes in the cubic I-43m space group. Co(1) is bonded in a tetrahedral geometry to four equivalent N(1) atoms. All Co(1)-N(1) bond lengths are 1.96 Å. There are four inequivalent C sites. In the first C site, C(4) is bonded in a linear geometry to one C(3) and one H(1) atom. The C(4)-C(3) bond length is 1.21 Å. The C(4)-H(1) bond length is 1.07 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3) and two equivalent N(1) atoms. The C(2)-C(3) bond length is 1.41 Å. Both C(2)-N(1) bond lengths are 1.36 Å. In the third C site, C(1) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(2) atom. The C(1)-N(1) bond length is 1.37 Å. The C(1)-H(2) bond length is 1.08 Å. In the fourth C site, C(3) is bonded in a linear geometry to one C(2) and one C(4) atom. N(1) is bonded in a trigonal planar geometry to one Co(1), one C(1), and one C(2) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. Linkers: 7 C#CC1=N[CH]C=N1 ,5 C#CC1=NC=C[N]1. Metal clusters: 6 [Co]. The MOF has largest included sphere 8.10 A, density 1.00 g/cm3, surface area 5033.70 m2/g, accessible volume 0.56 cm3/g