CoC4NHO4 crystallizes in the triclinic P1 space group. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded to one N(1), one O(1), one O(10), one O(11), one O(5), and one O(7) atom to form edge-sharing CoNO5 octahedra. The Co(1)-N(1) bond length is 2.20 Å. The Co(1)-O(1) bond length is 2.13 Å. The Co(1)-O(10) bond length is 2.08 Å. The Co(1)-O(11) bond length is 2.17 Å. The Co(1)-O(5) bond length is 2.06 Å. The Co(1)-O(7) bond length is 1.99 Å. In the second Co site, Co(2) is bonded to one N(2), one O(11), one O(2), one O(3), one O(5), and one O(9) atom to form edge-sharing CoNO5 octahedra. The Co(2)-N(2) bond length is 2.20 Å. The Co(2)-O(11) bond length is 1.99 Å. The Co(2)-O(2) bond length is 2.08 Å. The Co(2)-O(3) bond length is 2.17 Å. The Co(2)-O(5) bond length is 2.13 Å. The Co(2)-O(9) bond length is 2.06 Å. In the third Co site, Co(3) is bonded to one N(3), one O(1), one O(3), one O(6), one O(7), and one O(9) atom to form edge-sharing CoNO5 octahedra. The Co(3)-N(3) bond length is 2.20 Å. The Co(3)-O(1) bond length is 2.06 Å. The Co(3)-O(3) bond length is 1.99 Å. The Co(3)-O(6) bond length is 2.08 Å. The Co(3)-O(7) bond length is 2.17 Å. The Co(3)-O(9) bond length is 2.13 Å. In the fourth Co site, Co(4) is bonded to one N(4), one O(13), one O(17), one O(19), one O(22), and one O(23) atom to form edge-sharing CoNO5 octahedra. The Co(4)-N(4) bond length is 2.20 Å. The Co(4)-O(13) bond length is 2.13 Å. The Co(4)-O(17) bond length is 2.06 Å. The Co(4)-O(19) bond length is 1.99 Å. The Co(4)-O(22) bond length is 2.08 Å. The Co(4)-O(23) bond length is 2.17 Å. In the fifth Co site, Co(5) is bonded to one N(5), one O(14), one O(15), one O(17), one O(21), and one O(23) atom to form edge-sharing CoNO5 octahedra. The Co(5)-N(5) bond length is 2.20 Å. The Co(5)-O(14) bond length is 2.08 Å. The Co(5)-O(15) bond length is 2.17 Å. The Co(5)-O(17) bond length is 2.13 Å. The Co(5)-O(21) bond length is 2.06 Å. The Co(5)-O(23) bond length is 1.99 Å. In the sixth Co site, Co(6) is bonded to one N(6), one O(13), one O(15), one O(18), one O(19), and one O(21) atom to form edge-sharing CoNO5 octahedra. The Co(6)-N(6) bond length is 2.20 Å. The Co(6)-O(13) bond length is 2.06 Å. The Co(6)-O(15) bond length is 1.99 Å. The Co(6)-O(18) bond length is 2.08 Å. The Co(6)-O(19) bond length is 2.17 Å. The Co(6)-O(21) bond length is 2.13 Å. There are twenty-three inequivalent C sites. In the first C site, C(1,9) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1,9)-C(2) bond length is 1.49 Å. The C(1,9)-O(1) bond length is 1.28 Å. The C(1,9)-O(2) bond length is 1.21 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1,9); one C(3); and one C(4) atom. The C(2)-C(3) bond length is 1.43 Å. The C(2)-C(4) bond length is 1.38 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(16), one C(2), and one O(3) atom. The C(3)-C(16) bond length is 1.38 Å. The C(3)-O(3) bond length is 1.36 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(15); one C(2); and one H(1,4) atom. The C(4)-C(15) bond length is 1.38 Å. The C(4)-H(1,4) bond length is 1.14 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(5), and one O(6) atom. The C(5)-C(6) bond length is 1.49 Å. The C(5)-O(5) bond length is 1.28 Å. The C(5)-O(6) bond length is 1.21 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(5), one C(7), and one C(8) atom. The C(6)-C(7) bond length is 1.43 Å. The C(6)-C(8) bond length is 1.38 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(20), one C(6), and one O(7) atom. The C(7)-C(20) bond length is 1.38 Å. The C(7)-O(7) bond length is 1.36 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(19), one C(6), and one H(2) atom. The C(8)-C(19) bond length is 1.38 Å. The C(8)-H(2) bond length is 1.14 Å. In the ninth C site, C(10) is bonded in a trigonal planar geometry to one C(1,9); one C(11); and one C(12) atom. The C(10)-C(1,9) bond length is 1.49 Å. The C(10)-C(11) bond length is 1.43 Å. The C(10)-C(12) bond length is 1.38 Å. In the tenth C site, C(11) is bonded in a distorted single-bond geometry to one C(10), one C(24), and one O(11) atom. The C(11)-C(24) bond length is 1.38 Å. The C(11)-O(11) bond length is 1.36 Å. In the eleventh C site, C(12) is bonded in a distorted trigonal planar geometry to one C(10), one C(23), and one H(3) atom. The C(12)-C(23) bond length is 1.38 Å. The C(12)-H(3) bond length is 1.14 Å. In the twelfth C site, C(13) is bonded in a bent 120 degrees geometry to one C(14), one O(13), and one O(14) atom. The C(13)-C(14) bond length is 1.49 Å. The C(13)-O(13) bond length is 1.28 Å. The C(13)-O(14) bond length is 1.21 Å. In the thirteenth C site, C(14) is bonded in a trigonal planar geometry to one C(13), one C(15), and one C(16) atom. The C(14)-C(15) bond length is 1.43 Å. The C(14)-C(16) bond length is 1.38 Å. In the fourteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(14), one C(4), and one O(15) atom. The C(15)-O(15) bond length is 1.36 Å. In the fifteenth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(14); one C(3); and one H(1,4) atom. The C(16)-H(1,4) bond length is 1.14 Å. In the sixteenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(18), one O(17), and one O(18) atom. The C(17)-C(18) bond length is 1.49 Å. The C(17)-O(17) bond length is 1.28 Å. The C(17)-O(18) bond length is 1.21 Å. In the seventeenth C site, C(18) is bonded in a trigonal planar geometry to one C(17), one C(19), and one C(20) atom. The C(18)-C(19) bond length is 1.43 Å. The C(18)-C(20) bond length is 1.38 Å. In the eighteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(18), one C(8), and one O(19) atom. The C(19)-O(19) bond length is 1.36 Å. In the nineteenth C site, C(20) is bonded in a bent 120 degrees geometry to one C(18) and one C(7) atom. In the twentieth C site, C(21) is bonded in a 3-coordinate geometry to one C(22), one H(5), one O(21), and one O(22) atom. The C(21)-C(22) bond length is 1.49 Å. The C(21)-H(5) bond length is 1.14 Å. The C(21)-O(21) bond length is 1.28 Å. The C(21)-O(22) bond length is 1.21 Å. In the twenty-first C site, C(22) is bonded in a trigonal planar geometry to one C(21), one C(23), and one C(24) atom. The C(22)-C(23) bond length is 1.43 Å. The C(22)-C(24) bond length is 1.38 Å. In the twenty-second C site, C(23) is bonded in a distorted single-bond geometry to one C(12), one C(22), and one O(23) atom. The C(23)-O(23) bond length is 1.36 Å. In the twenty-third C site, C(24) is bonded in a distorted trigonal planar geometry to one C(11), one C(22), and one H(6) atom. The C(24)-H(6) bond length is 1.14 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded in a bent 150 degrees geometry to one Co(1) and one O(4,8,12,16,20,24) atom. The N(1)-O(4,8,12,16,20,24) bond length is 1.43 Å. In the second N site, N(2) is bonded in a bent 150 degrees geometry to one Co(2) and one O(4,8,12,16,20,24) atom. The N(2)-O(4,8,12,16,20,24) bond length is 1.43 Å. In the third N site, N(3) is bonded in a bent 150 degrees geometry to one Co(3) and one O(4,8,12,16,20,24) atom. The N(3)-O(4,8,12,16,20,24) bond length is 1.43 Å. In the fourth N site, N(4) is bonded in a bent 150 degrees geometry to one Co(4) and one O(4,8,12,16,20,24) atom. The N(4)-O(4,8,12,16,20,24) bond length is 1.43 Å. In the fifth N site, N(5) is bonded in a bent 150 degrees geometry to one Co(5) and one O(4,8,12,16,20,24) atom. The N(5)-O(4,8,12,16,20,24) bond length is 1.43 Å. In the sixth N site, N(6) is bonded in a bent 150 degrees geometry to one Co(6) and one O(4,8,12,16,20,24) atom. The N(6)-O(4,8,12,16,20,24) bond length is 1.43 Å. There are five inequivalent H sites. In the first H site, H(1,4) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(8) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(12) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(21) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(24) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Co(1); one Co(3); and one C(1,9) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Co(2) and one C(1,9) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Co(2), one Co(3), and one C(3) atom. In the fourth O site, O(4,8,12,16,20,24) is bonded in a single-bond geometry to one N(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(5) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Co(3) and one C(5) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Co(1), one Co(3), and one C(7) atom. In the eighth O site, O(9) is bonded in a distorted trigonal planar geometry to one Co(2); one Co(3); and one C(1,9) atom. The O(9)-C(1,9) bond length is 1.28 Å. In the ninth O site, O(10) is bonded in a bent 120 degrees geometry to one Co(1) and one C(1,9) atom. The O(10)-C(1,9) bond length is 1.21 Å. In the tenth O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Co(1), one Co(2), and one C(11) atom. In the eleventh O site, O(13) is bonded in a 3-coordinate geometry to one Co(4), one Co(6), and one C(13) atom. In the twelfth O site, O(14) is bonded in a bent 120 degrees geometry to one Co(5) and one C(13) atom. In the thirteenth O site, O(15) is bonded in a distorted trigonal non-coplanar geometry to one Co(5), one Co(6), and one C(15) atom. In the fourteenth O site, O(17) is bonded in a distorted trigonal planar geometry to one Co(4), one Co(5), and one C(17) atom. In the fifteenth O site, O(18) is bonded in a bent 120 degrees geometry to one Co(6) and one C(17) atom. In the sixteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Co(4), one Co(6), and one C(19) atom. In the seventeenth O site, O(21) is bonded in a 3-coordinate geometry to one Co(5), one Co(6), and one C(21) atom. In the eighteenth O site, O(22) is bonded in a distorted bent 120 degrees geometry to one Co(4) and one C(21) atom. In the nineteenth O site, O(23) is bonded in a distorted trigonal non-coplanar geometry to one Co(4), one Co(5), and one C(23) atom. Linkers: 1 [O][CH]c1cc([O])c(C([O])=O)cc1[O] ,1 [O]C(=O)c1cc([O])c(C([O])[O])cc1[O] ,1 [O]C(=O)c1cc([O])c(C([O])=O)cc1[O] ,1 [O]C(=O)c1[c]c([O])c(C([O])=O)cc1[O] ,1 [O]c1cc(C([O])[O])c([O])cc1[C]=O. Metal clusters: 6 [Co]. The MOF has largest included sphere 7.55 A, density 1.41 g/cm3, surface area 3064.73 m2/g, accessible volume 0.30 cm3/g