CoH2(C3N2)2(CH)8 crystallizes in the trigonal R-3 space group. The structure consists of one hundred and forty-four 02329_fluka molecules inside a CoH2(C3N2)2 framework. In the CoH2(C3N2)2 framework, Co(1) is bonded in a tetrahedral geometry to one N(1), one N(2), one N(3), and one N(4) atom. The Co(1)-N(1) bond length is 1.95 Å. The Co(1)-N(2) bond length is 1.97 Å. The Co(1)-N(3) bond length is 1.97 Å. The Co(1)-N(4) bond length is 1.95 Å. There are six inequivalent C sites. In the first C site, C(6) is bonded in a distorted single-bond geometry to one N(2) atom. The C(6)-N(2) bond length is 1.39 Å. In the second C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(4), and one H(1) atom. The C(1)-N(1) bond length is 1.35 Å. The C(1)-N(4) bond length is 1.35 Å. The C(1)-H(1) bond length is 1.09 Å. In the third C site, C(12) is bonded in a distorted single-bond geometry to one N(4) atom. The C(12)-N(4) bond length is 1.39 Å. In the fourth C site, C(2) is bonded in a distorted single-bond geometry to one N(1) atom. The C(2)-N(1) bond length is 1.39 Å. In the fifth C site, C(9) is bonded in a distorted single-bond geometry to one N(3) atom. The C(9)-N(3) bond length is 1.39 Å. In the sixth C site, C(5) is bonded in a trigonal planar geometry to one N(2), one N(3), and one H(4) atom. The C(5)-N(2) bond length is 1.35 Å. The C(5)-N(3) bond length is 1.35 Å. The C(5)-H(4) bond length is 1.09 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Co(1), one C(1), and one C(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Co(1), one C(5), and one C(6) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Co(1), one C(5), and one C(9) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Co(1), one C(1), and one C(12) atom. There are two inequivalent H sites. In the first H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(1) is bonded in a single-bond geometry to one C(1) atom. Linkers: 9 C1=Nc2ccccc2[N]1. Metal clusters: 6 [Co]. The MOF has largest included sphere 5.40 A, density 1.25 g/cm3, surface area 4665.15 m2/g, accessible volume 0.30 cm3/g