CoC8NH7O5 crystallizes in the triclinic P-1 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted octahedral geometry to one N(2), one O(1), one O(10), one O(3), one O(5), and one O(8) atom. The Co(1)-N(2) bond length is 2.21 Å. The Co(1)-O(1) bond length is 2.11 Å. The Co(1)-O(10) bond length is 2.15 Å. The Co(1)-O(3) bond length is 1.96 Å. The Co(1)-O(5) bond length is 1.98 Å. The Co(1)-O(8) bond length is 2.27 Å. In the second Co site, Co(2) is bonded in a distorted octahedral geometry to one N(1), one O(2), one O(4), one O(6), one O(7), and one O(9) atom. The Co(2)-N(1) bond length is 2.21 Å. The Co(2)-O(2) bond length is 2.10 Å. The Co(2)-O(4) bond length is 1.97 Å. The Co(2)-O(6) bond length is 1.98 Å. The Co(2)-O(7) bond length is 2.28 Å. The Co(2)-O(9) bond length is 2.15 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(3) atom. The C(1)-C(11) bond length is 1.40 Å. The C(1)-C(13) bond length is 1.49 Å. The C(1)-C(3) bond length is 1.40 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(4) atom. The C(2)-C(12) bond length is 1.40 Å. The C(2)-C(14) bond length is 1.49 Å. The C(2)-C(4) bond length is 1.40 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(1), one C(5), and one H(9) atom. The C(3)-C(5) bond length is 1.40 Å. The C(3)-H(9) 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), one C(6), and one H(10) atom. The C(4)-C(6) bond length is 1.40 Å. The C(4)-H(10) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(15), one C(3), and one C(7) atom. The C(5)-C(15) bond length is 1.48 Å. The C(5)-C(7) bond length is 1.40 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(16), one C(4), and one C(8) atom. The C(6)-C(16) bond length is 1.48 Å. The C(6)-C(8) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(5); one C(9); and one H(11,12) atom. The C(7)-C(9) bond length is 1.40 Å. The C(7)-H(11,12) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(10); one C(6); and one H(11,12) atom. The C(8)-C(10) bond length is 1.40 Å. The C(8)-H(11,12) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(11), one C(7), and one N(1) atom. The C(9)-C(11) bond length is 1.40 Å. The C(9)-N(1) bond length is 1.41 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(12), one C(8), and one N(2) atom. The C(10)-C(12) bond length is 1.40 Å. The C(10)-N(2) bond length is 1.42 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(1), one C(9), and one H(13) atom. The C(11)-H(13) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(10), one C(2), and one H(14) atom. The C(12)-H(14) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(3), and one O(5) atom. The C(13)-O(3) bond length is 1.28 Å. The C(13)-O(5) bond length is 1.27 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(4), and one O(6) atom. The C(14)-O(4) bond length is 1.28 Å. The C(14)-O(6) bond length is 1.27 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(7), and one O(9) atom. The C(15)-O(7) bond length is 1.28 Å. The C(15)-O(9) bond length is 1.28 Å. In the sixteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(10), and one O(8) atom. The C(16)-O(10) bond length is 1.28 Å. The C(16)-O(8) bond length is 1.28 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 4-coordinate geometry to one Co(2), one C(9), one H(5), and one H(7) atom. The N(1)-H(5) bond length is 1.02 Å. The N(1)-H(7) bond length is 1.02 Å. In the second N site, N(2) is bonded in a 4-coordinate geometry to one Co(1), one C(10), one H(6), and one H(8) atom. The N(2)-H(6) bond length is 1.02 Å. The N(2)-H(8) bond length is 1.02 Å. There are thirteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. The H(2)-O(2) bond length is 0.99 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(1) and one O(10) atom. The H(3)-O(1) bond length is 1.00 Å. The H(3)-O(10) bond length is 1.72 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(2) and one O(9) atom. The H(4)-O(2) bond length is 1.00 Å. The H(4)-O(9) bond length is 1.71 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(1) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one N(2) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one N(1) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one N(2) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(3) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(4) atom. In the eleventh H site, H(11,12) is bonded in a single-bond geometry to one C(7) atom. In the twelfth H site, H(13) is bonded in a single-bond geometry to one C(11) atom. In the thirteenth H site, H(14) is bonded in a single-bond geometry to one C(12) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one Co(1), one H(1), and one H(3) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Co(2), one H(2), and one H(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(13) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one C(14) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Co(1) and one C(13) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Co(2) and one C(14) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Co(2) and one C(15) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Co(1) and one C(16) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Co(2), one C(15), and one H(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Co(1), one C(16), and one H(3) atom. Linkers: 4 Nc1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 2 N[Co]12(O[C]O1)O[C]O[Co]1(N)(O[C]O1)O[C]O2.O.O. RCSR code: rtl. The MOF has largest included sphere 1.76 A, density 1.99 g/cm3, surface area 3257.08 m2/g, accessible volume 0.09 cm3/g