CoH5(C3N2)2 crystallizes in the triclinic P1 space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a tetrahedral geometry to one C(9,10); one N(1,2); one N(15); and one N(9) atom. The Co(1)-C(9,10) bond length is 1.83 Å. The Co(1)-N(1,2) bond length is 1.91 Å. The Co(1)-N(15) bond length is 1.90 Å. The Co(1)-N(9) bond length is 1.93 Å. In the second Co site, Co(2) is bonded in a tetrahedral geometry to one C(9,10); one N(1,2); one N(10); and one N(16) atom. The Co(2)-C(9,10) bond length is 1.83 Å. The Co(2)-N(1,2) bond length is 1.91 Å. The Co(2)-N(10) bond length is 1.93 Å. The Co(2)-N(16) bond length is 1.90 Å. In the third Co site, Co(3) is bonded in a tetrahedral geometry to one C(12), one N(11), one N(13), and one N(3) atom. The Co(3)-C(12) bond length is 1.83 Å. The Co(3)-N(11) bond length is 1.93 Å. The Co(3)-N(13) bond length is 1.90 Å. The Co(3)-N(3) bond length is 1.91 Å. In the fourth Co site, Co(4) is bonded in a tetrahedral geometry to one C(11), one N(12), one N(14), and one N(4) atom. The Co(4)-C(11) bond length is 1.83 Å. The Co(4)-N(12) bond length is 1.93 Å. The Co(4)-N(14) bond length is 1.90 Å. The Co(4)-N(4) bond length is 1.91 Å. There are nineteen inequivalent C sites. In the first C site, C(1,2,4) is bonded in a trigonal planar geometry to one N(1,2); one N(5,6); and one H(1,2,3,4) atom. The C(1,2,4)-N(1,2) bond length is 1.37 Å. The C(1,2,4)-N(5,6) bond length is 1.34 Å. The C(1,2,4)-H(1,2,3,4) bond length is 1.09 Å. In the second C site, C(3) is bonded in a trigonal planar geometry to one N(3); one N(7); and one H(1,2,3,4) atom. The C(3)-N(3) bond length is 1.37 Å. The C(3)-N(7) bond length is 1.34 Å. The C(3)-H(1,2,3,4) bond length is 1.09 Å. In the third C site, C(5,6) is bonded in a distorted bent 120 degrees geometry to one C(9,10); one N(1,2); and one H(5,6,7,8) atom. The C(5,6)-C(9,10) bond length is 1.39 Å. The C(5,6)-N(1,2) bond length is 1.39 Å. The C(5,6)-H(5,6,7,8) bond length is 1.08 Å. In the fourth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(11); one N(3); and one H(5,6,7,8) atom. The C(7)-C(11) bond length is 1.39 Å. The C(7)-N(3) bond length is 1.39 Å. The C(7)-H(5,6,7,8) bond length is 1.08 Å. In the fifth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(12); one N(4); and one H(5,6,7,8) atom. The C(8)-C(12) bond length is 1.39 Å. The C(8)-N(4) bond length is 1.39 Å. The C(8)-H(5,6,7,8) bond length is 1.08 Å. In the sixth C site, C(9,10) is bonded in a distorted bent 120 degrees geometry to one Co(2); one C(5,6); and one N(5,6) atom. The C(9,10)-N(5,6) bond length is 1.36 Å. In the seventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one Co(4), one C(7), and one N(7) atom. The C(11)-N(7) bond length is 1.36 Å. In the eighth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one Co(3), one C(8), and one N(8) atom. The C(12)-N(8) bond length is 1.36 Å. In the ninth C site, C(13) is bonded in a trigonal planar geometry to one N(13); one N(9); and one H(9,12) atom. The C(13)-N(13) bond length is 1.35 Å. The C(13)-N(9) bond length is 1.35 Å. The C(13)-H(9,12) bond length is 1.08 Å. In the tenth C site, C(14) is bonded in a trigonal planar geometry to one N(10), one N(14), and one H(10) atom. The C(14)-N(10) bond length is 1.35 Å. The C(14)-N(14) bond length is 1.35 Å. The C(14)-H(10) bond length is 1.08 Å. In the eleventh C site, C(15) is bonded in a trigonal planar geometry to one N(11), one N(15), and one H(11) atom. The C(15)-N(11) bond length is 1.35 Å. The C(15)-N(15) bond length is 1.35 Å. The C(15)-H(11) bond length is 1.08 Å. In the twelfth C site, C(16) is bonded in a trigonal planar geometry to one N(12); one N(16); and one H(9,12) atom. The C(16)-N(12) bond length is 1.35 Å. The C(16)-N(16) bond length is 1.35 Å. The C(16)-H(9,12) bond length is 1.08 Å. In the thirteenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(21,24); one N(13); and one H(13,15,16) atom. The C(17)-C(21,24) bond length is 1.37 Å. The C(17)-N(13) bond length is 1.39 Å. The C(17)-H(13,15,16) bond length is 1.08 Å. In the fourteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(22), one N(14), and one H(14) atom. The C(18)-C(22) bond length is 1.37 Å. The C(18)-N(14) bond length is 1.39 Å. The C(18)-H(14) bond length is 1.08 Å. In the fifteenth C site, C(19) is bonded in a distorted bent 120 degrees geometry to one C(23); one N(15); and one H(13,15,16) atom. The C(19)-C(23) bond length is 1.37 Å. The C(19)-N(15) bond length is 1.39 Å. The C(19)-H(13,15,16) bond length is 1.08 Å. In the sixteenth C site, C(20) is bonded in a distorted bent 120 degrees geometry to one C(21,24); one N(16); and one H(13,15,16) atom. The C(20)-C(21,24) bond length is 1.37 Å. The C(20)-N(16) bond length is 1.39 Å. The C(20)-H(13,15,16) bond length is 1.08 Å. In the seventeenth C site, C(21,24) is bonded in a distorted trigonal planar geometry to one C(17); one N(9); and one H(17,18,20) atom. The C(21,24)-N(9) bond length is 1.39 Å. The C(21,24)-H(17,18,20) bond length is 1.08 Å. In the eighteenth C site, C(22) is bonded in a distorted trigonal planar geometry to one C(18); one N(10); and one H(17,18,20) atom. The C(22)-N(10) bond length is 1.39 Å. The C(22)-H(17,18,20) bond length is 1.08 Å. In the nineteenth C site, C(23) is bonded in a distorted trigonal planar geometry to one C(19), one N(11), and one H(19) atom. The C(23)-N(11) bond length is 1.39 Å. The C(23)-H(19) bond length is 1.08 Å. There are fourteen inequivalent N sites. In the first N site, N(1,2) is bonded in a trigonal planar geometry to one Co(1); one C(1,2,4); and one C(5,6) atom. In the second N site, N(3) is bonded in a trigonal planar geometry to one Co(3), one C(3), and one C(7) atom. In the third N site, N(4) is bonded in a trigonal planar geometry to one Co(4); one C(1,2,4); and one C(8) atom. The N(4)-C(1,2,4) bond length is 1.37 Å. In the fourth N site, N(5,6) is bonded in a water-like geometry to one C(1,2,4) and one C(9,10) atom. In the fifth N site, N(7) is bonded in a water-like geometry to one C(11) and one C(3) atom. In the sixth N site, N(8) is bonded in a water-like geometry to one C(1,2,4) and one C(12) atom. The N(8)-C(1,2,4) bond length is 1.34 Å. In the seventh N site, N(9) is bonded in a trigonal planar geometry to one Co(1); one C(13); and one C(21,24) atom. In the eighth N site, N(10) is bonded in a trigonal planar geometry to one Co(2), one C(14), and one C(22) atom. In the ninth N site, N(11) is bonded in a trigonal planar geometry to one Co(3), one C(15), and one C(23) atom. In the tenth N site, N(12) is bonded in a trigonal planar geometry to one Co(4); one C(16); and one C(21,24) atom. The N(12)-C(21,24) bond length is 1.39 Å. In the eleventh N site, N(13) is bonded in a trigonal planar geometry to one Co(3), one C(13), and one C(17) atom. In the twelfth N site, N(14) is bonded in a trigonal planar geometry to one Co(4), one C(14), and one C(18) atom. In the thirteenth N site, N(15) is bonded in a trigonal planar geometry to one Co(1), one C(15), and one C(19) atom. In the fourteenth N site, N(16) is bonded in a trigonal planar geometry to one Co(2), one C(16), and one C(20) atom. There are nine inequivalent H sites. In the first H site, H(1,2,3,4) is bonded in a single-bond geometry to one C(1,2,4) atom. In the second H site, H(5,6,7,8) is bonded in a single-bond geometry to one C(5,6) atom. In the third H site, H(9,12) is bonded in a single-bond geometry to one C(13) atom. In the fourth H site, H(10) is bonded in a single-bond geometry to one C(14) atom. In the fifth H site, H(11) is bonded in a single-bond geometry to one C(15) atom. In the sixth H site, H(13,15,16) is bonded in a single-bond geometry to one C(17) atom. In the seventh H site, H(14) is bonded in a single-bond geometry to one C(18) atom. In the eighth H site, H(17,18,20) is bonded in a single-bond geometry to one C(21,24) atom. In the ninth H site, H(19) is bonded in a single-bond geometry to one C(23) atom. Linkers: 1 [CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH][N].[CH][N].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C]=C[N][CH].[C][C][N].[C][C][N][C].[C][N][C].[C][N][C][N].[C][N][C][N].[Co].[Co].[Co].[Co].[H].[H].[H].[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].[N][C][Co][N].[N][Co][N] ,1 C1=CN=C[N]1. Metal clusters: 2 [Co]. The MOF has largest included sphere 4.52 A, density 1.32 g/cm3, surface area 3904.46 m2/g, accessible volume 0.40 cm3/g