CoC20H22(NO4)2 crystallizes in the trigonal P3_221 space group. Co(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Both Co(1)-O(1) bond lengths are 2.06 Å. Both Co(1)-O(2) bond lengths are 2.07 Å. Both Co(1)-O(4) bond lengths are 2.13 Å. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(6) atom. The C(1)-C(3) bond length is 1.40 Å. The C(1)-C(5) bond length is 1.40 Å. The C(1)-C(6) bond length is 1.48 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(8) atom. The C(2)-C(2) bond length is 1.47 Å. The C(2)-C(4) bond length is 1.42 Å. The C(2)-C(8) bond length is 1.41 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(1) and one H(2) atom. The C(3)-H(2) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(2) and one O(2) atom. The C(4)-O(2) bond length is 1.35 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(1), one C(8), and one H(3) atom. The C(5)-C(8) bond length is 1.39 Å. The C(5)-H(3) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(3) atom. The C(6)-O(1) bond length is 1.25 Å. The C(6)-O(3) bond length is 1.32 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one N(1), one H(4), and one O(4) atom. The C(7)-N(1) bond length is 1.34 Å. The C(7)-H(4) bond length is 1.10 Å. The C(7)-O(4) bond length is 1.26 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(2), one C(5), and one H(5) atom. The C(8)-H(5) bond length is 1.09 Å. In the ninth C site, C(9) is bonded to one N(1), one H(6), one H(7), and one H(8) atom to form corner-sharing CH3N tetrahedra. The C(9)-N(1) bond length is 1.45 Å. The C(9)-H(6) bond length is 1.09 Å. The C(9)-H(7) bond length is 1.10 Å. The C(9)-H(8) bond length is 1.10 Å. In the tenth C site, C(10) is bonded to one N(1), one H(10), one H(11), and one H(9) atom to form corner-sharing CH3N tetrahedra. The C(10)-N(1) bond length is 1.45 Å. The C(10)-H(10) bond length is 1.10 Å. The C(10)-H(11) bond length is 1.10 Å. The C(10)-H(9) bond length is 1.10 Å. N(1) is bonded in a trigonal planar geometry to one C(10), one C(7), and one C(9) atom. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to one O(2) and one O(3) atom. The H(1)-O(2) bond length is 1.35 Å. The H(1)-O(3) bond length is 1.11 Å. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) 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(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(9) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(9) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(10) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(10) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(10) atom. There are four 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(6) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Co(1), one C(4), and one H(1) atom. In the third O site, O(3) is bonded in a water-like geometry to one C(6) and one H(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Co(1) and one C(7) atom. Linkers: 3 [O]c1cc(C(=O)O)ccc1-c1ccc(C(=O)O)cc1[O]. Metal clusters: 3 [Co]. RCSR code: twt. The MOF has largest included sphere 6.13 A, density 1.09 g/cm3, surface area 4895.09 m2/g, accessible volume 0.48 cm3/g