Co2C17N3H13O8(C4H3)2 crystallizes in the hexagonal P6_1 space group. The structure consists of twelve isobutylene molecules inside a Co2C17N3H13O8 framework. In the Co2C17N3H13O8 framework, there are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one N(2), one O(1), one O(4), one O(5), and one O(8) atom to form corner-sharing CoNO4 square pyramids. The corner-sharing octahedral tilt angles are 66°. The Co(1)-N(2) bond length is 2.10 Å. The Co(1)-O(1) bond length is 2.12 Å. The Co(1)-O(4) bond length is 2.13 Å. The Co(1)-O(5) bond length is 2.01 Å. The Co(1)-O(8) bond length is 2.08 Å. In the second Co site, Co(2) is bonded to one N(1), one N(3), one O(1), one O(3), one O(6), and one O(7) atom to form corner-sharing CoN2O4 octahedra. The Co(2)-N(1) bond length is 2.21 Å. The Co(2)-N(3) bond length is 2.14 Å. The Co(2)-O(1) bond length is 2.09 Å. The Co(2)-O(3) bond length is 2.18 Å. The Co(2)-O(6) bond length is 2.11 Å. The Co(2)-O(7) bond length is 2.08 Å. There are seventeen inequivalent C sites. In the first C site, C(3) is bonded in a trigonal planar geometry to one C(13), one C(2), and one C(4) atom. The C(3)-C(13) bond length is 1.51 Å. The C(3)-C(2) bond length is 1.39 Å. The C(3)-C(4) bond length is 1.40 Å. In the second C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(2) atom. The C(4)-C(5) bond length is 1.37 Å. The C(4)-H(2) bond length is 0.93 Å. In the third C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(7) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-C(7) bond length is 1.52 Å. In the fourth C site, C(6) is bonded in a distorted single-bond geometry to one C(1), one C(5), and one H(3) atom. The C(6)-C(1) bond length is 1.39 Å. The C(6)-H(3) bond length is 0.93 Å. In the fifth C site, C(7) is bonded in a 3-coordinate geometry to one C(5), one N(1), one H(4), and one H(5) atom. The C(7)-N(1) bond length is 1.49 Å. The C(7)-H(4) bond length is 0.97 Å. The C(7)-H(5) bond length is 0.97 Å. In the sixth C site, C(8) is bonded in a 3-coordinate geometry to one N(1) and two equivalent H(6,7) atoms. The C(8)-N(1) bond length is 1.48 Å. Both C(8)-H(6,7) bond lengths are 0.97 Å. In the seventh C site, C(9) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(9)-O(1) bond length is 1.30 Å. The C(9)-O(2) bond length is 1.22 Å. In the eighth C site, C(10) is bonded in a 3-coordinate geometry to one N(1), one H(8), and one H(9) atom. The C(10)-N(1) bond length is 1.49 Å. The C(10)-H(8) bond length is 0.97 Å. The C(10)-H(9) bond length is 0.97 Å. In the ninth C site, C(11) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(11)-O(3) bond length is 1.25 Å. The C(11)-O(4) bond length is 1.24 Å. In the tenth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(5), and one O(6) atom. The C(12)-C(1) bond length is 1.51 Å. The C(12)-O(5) bond length is 1.25 Å. The C(12)-O(6) bond length is 1.26 Å. In the eleventh C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(7), and one O(8) atom. The C(13)-O(7) bond length is 1.25 Å. The C(13)-O(8) bond length is 1.24 Å. In the twelfth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(13) atom. The C(18)-N(2) bond length is 1.36 Å. The C(18)-H(13) bond length is 0.93 Å. In the thirteenth C site, C(23) is bonded in a distorted bent 120 degrees geometry to one N(3) and one H(17) atom. The C(23)-N(3) bond length is 1.33 Å. The C(23)-H(17) bond length is 0.93 Å. In the fourteenth C site, C(24) is bonded in a distorted bent 120 degrees geometry to one N(3) and one H(18) atom. The C(24)-N(3) bond length is 1.34 Å. The C(24)-H(18) bond length is 0.93 Å. In the fifteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(10) atom. The C(14)-N(2) bond length is 1.34 Å. The C(14)-H(10) bond length is 0.93 Å. In the sixteenth C site, C(1) is bonded in a trigonal planar geometry to one C(12), one C(2), and one C(6) atom. The C(1)-C(2) bond length is 1.38 Å. In the seventeenth C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(1) atom. The C(2)-H(1) bond length is 0.93 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a tetrahedral geometry to one Co(2), one C(10), one C(7), and one C(8) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Co(1), one C(14), and one C(18) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Co(2), one C(23), and one C(24) atom. There are twelve inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(7) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(7) atom. In the sixth H site, H(6,7) is bonded in a single-bond geometry to one C(8) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(10) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(10) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(14) atom. In the tenth H site, H(13) is bonded in a single-bond geometry to one C(18) atom. In the eleventh H site, H(17) is bonded in a single-bond geometry to one C(23) atom. In the twelfth H site, H(18) is bonded in a single-bond geometry to one C(24) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(9) atom. In the second O site, O(2) is bonded in a single-bond geometry to one C(9) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one C(11) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(11) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Co(1) and one C(12) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Co(2) and one C(12) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Co(2) and one C(13) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one C(13) atom. Linkers: 6 C(=C/c1ccncc1)\c1ccncc1 ,6 [O]C(=O)CN(CC([O])=O)Cc1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 12 [Co]. The MOF has largest included sphere 4.81 A, density 1.29 g/cm3, surface area 3950.03 m2/g, accessible volume 0.24 cm3/g