CoH2(C2O)3CH crystallizes in the trigonal P3_221 space group. The structure consists of six 02329_fluka molecules inside a CoH2(C2O)3 framework. In the CoH2(C2O)3 framework, Co(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted edge-sharing CoO5 square pyramids. The Co(1)-O(1) bond length is 2.04 Å. There is one shorter (2.09 Å) and one longer (2.16 Å) Co(1)-O(2) bond length. Both Co(1)-O(3) bond lengths are 2.04 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(4), one O(1), and one O(2) atom. The C(1)-C(4) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.28 Å. In the second C site, C(3) is bonded in a distorted single-bond geometry to one C(7) and one H(2) atom. The C(3)-C(7) bond length is 1.42 Å. The C(3)-H(2) bond length is 0.95 Å. In the third C site, C(4) is bonded in a trigonal planar geometry to one C(1), one C(5), and one C(6) atom. The C(4)-C(5) bond length is 1.43 Å. The C(4)-C(6) bond length is 1.38 Å. In the fourth C site, C(5) is bonded in a single-bond geometry to one C(4) and one O(3) atom. The C(5)-O(3) bond length is 1.34 Å. In the fifth C site, C(6) is bonded in a distorted single-bond geometry to one C(4), one C(7), and one H(3) atom. The C(6)-C(7) bond length is 1.39 Å. The C(6)-H(3) bond length is 0.95 Å. In the sixth C site, C(7) is bonded in a trigonal planar geometry to one C(3), one C(6), and one C(7) atom. The C(7)-C(7) bond length is 1.46 Å. There are two inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(6) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Co(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one C(5) atom. Linkers: 3 [O]C(=O)c1cc(-c2ccc([O])c(C([O])=O)c2)ccc1[O]. Metal clusters: 6 [Co]. The MOF has largest included sphere 16.84 A, density 0.69 g/cm3, surface area 3154.88 m2/g, accessible volume 1.04 cm3/g