CoH5(C3N2)2 crystallizes in the orthorhombic Fdd2 space group. Co(1) is bonded in a tetrahedral geometry to one C(3), one N(1), one N(3), and one N(4) atom. The Co(1)-C(3) bond length is 2.00 Å. The Co(1)-N(1) bond length is 2.01 Å. The Co(1)-N(3) bond length is 1.97 Å. The Co(1)-N(4) bond length is 1.98 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(1) atom. The C(1)-N(1) bond length is 1.36 Å. The C(1)-N(2) bond length is 1.36 Å. The C(1)-H(1) bond length is 0.96 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(3), one N(1), and one H(2) atom. The C(2)-C(3) bond length is 1.31 Å. The C(2)-N(1) bond length is 1.28 Å. The C(2)-H(2) bond length is 0.96 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one Co(1), one C(2), and one N(2) atom. The C(3)-N(2) bond length is 1.38 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one N(3), one N(4), and one H(3) atom. The C(4)-N(3) bond length is 1.34 Å. The C(4)-N(4) bond length is 1.33 Å. The C(4)-H(3) bond length is 0.96 Å. In the fifth C site, C(5) is bonded in a 3-coordinate geometry to one C(6), one N(4), and one H(4) atom. The C(5)-C(6) bond length is 1.35 Å. The C(5)-N(4) bond length is 1.35 Å. The C(5)-H(4) bond length is 0.96 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one N(3), and one H(5) atom. The C(6)-N(3) bond length is 1.35 Å. The C(6)-H(5) bond length is 0.96 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 water-like geometry to one C(1) and one C(3) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Co(1), one C(4), and one C(6) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Co(1), one C(4), and one C(5) atom. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(6) atom. Linkers: 1 [CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH][N].[CH][N][CH].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C]#N.[C][N].[C][N].[C][N][C].[C][N][C][C][N].[C][N][C][N][Co]([N])[N].[Co].[Co].[Co].[Co].[Co]n1[c][c]nc1.[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N].[N] ,1 [CH]1C=NC=N1. Metal clusters: 2 [Co]. The MOF has largest included sphere 5.12 A, density 1.22 g/cm3, surface area 4098.69 m2/g, accessible volume 0.47 cm3/g