CoC9H8O8 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(12), one O(13), one O(3), one O(5), and two equivalent O(11) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 53°. The Co(1)-O(12) bond length is 2.10 Å. The Co(1)-O(13) bond length is 2.10 Å. The Co(1)-O(3) bond length is 2.03 Å. The Co(1)-O(5) bond length is 2.04 Å. There is one shorter (2.14 Å) and one longer (2.15 Å) Co(1)-O(11) bond length. In the second Co site, Co(2) is bonded to two equivalent O(14), two equivalent O(15), and two equivalent O(8) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 52°. Both Co(2)-O(14) bond lengths are 2.10 Å. Both Co(2)-O(15) bond lengths are 2.13 Å. Both Co(2)-O(8) bond lengths are 2.04 Å. In the third Co site, Co(3) is bonded to two equivalent O(10), two equivalent O(15), and two equivalent O(16) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 52°. Both Co(3)-O(10) bond lengths are 2.05 Å. Both Co(3)-O(15) bond lengths are 2.15 Å. Both Co(3)-O(16) bond lengths are 2.10 Å. There are eighteen inequivalent C sites. In the first C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(3), and one O(4) atom. The C(15)-C(1) bond length is 1.50 Å. The C(15)-O(3) bond length is 1.29 Å. The C(15)-O(4) bond length is 1.25 Å. In the second C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(5), and one O(6) atom. The C(16)-C(4) bond length is 1.50 Å. The C(16)-O(5) bond length is 1.30 Å. The C(16)-O(6) bond length is 1.25 Å. In the third C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(7), and one O(8) atom. The C(17)-C(8) bond length is 1.50 Å. The C(17)-O(7) bond length is 1.25 Å. The C(17)-O(8) bond length is 1.29 Å. In the fourth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(10), and one O(9) atom. The C(18)-C(11) bond length is 1.50 Å. The C(18)-O(10) bond length is 1.30 Å. The C(18)-O(9) bond length is 1.26 Å. In the fifth C site, C(1) is bonded in a trigonal planar geometry to one C(14), one C(15), and one C(2) atom. The C(1)-C(14) bond length is 1.40 Å. The C(1)-C(2) bond length is 1.40 Å. In the sixth C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(2)-H(1) bond length is 1.09 Å. In the seventh C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one H(2) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(2) bond length is 1.09 Å. In the eighth C site, C(4) is bonded in a trigonal planar geometry to one C(16), one C(3), and one C(5) atom. The C(4)-C(5) bond length is 1.40 Å. In the ninth C site, C(5) is bonded in a trigonal planar geometry to one C(14), one C(4), and one C(6) atom. The C(5)-C(14) bond length is 1.41 Å. The C(5)-C(6) bond length is 1.48 Å. In the tenth C site, C(6) is bonded in a single-bond geometry to one C(5), one C(7), and one O(1) atom. The C(6)-C(7) bond length is 1.48 Å. The C(6)-O(1) bond length is 1.24 Å. In the eleventh C site, C(7) is bonded in a trigonal planar geometry to one C(12), one C(6), and one C(8) atom. The C(7)-C(12) bond length is 1.41 Å. The C(7)-C(8) bond length is 1.40 Å. In the twelfth C site, C(8) is bonded in a trigonal planar geometry to one C(17), one C(7), and one C(9) atom. The C(8)-C(9) bond length is 1.40 Å. In the thirteenth C site, C(9) is bonded in a distorted single-bond geometry to one C(8) and one H(3,4) atom. The C(9)-H(3,4) bond length is 1.09 Å. In the fourteenth C site, C(10) is bonded in a distorted single-bond geometry to one C(11) and one H(3,4) atom. The C(10)-C(11) bond length is 1.40 Å. The C(10)-H(3,4) bond length is 1.09 Å. In the fifteenth C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(18) atom. The C(11)-C(12) bond length is 1.40 Å. In the sixteenth C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(7) atom. The C(12)-C(13) bond length is 1.48 Å. In the seventeenth C site, C(13) is bonded in a single-bond geometry to one C(12), one C(14), and one O(2) atom. The C(13)-C(14) bond length is 1.48 Å. The C(13)-O(2) bond length is 1.24 Å. In the eighteenth C site, C(14) is bonded in a trigonal planar geometry to one C(1), one C(13), and one C(5) atom. There are fifteen 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(3) atom. In the third H site, H(3,4) is bonded in a single-bond geometry to one C(9) atom. In the fourth H site, H(5) is bonded in a distorted single-bond geometry to one O(11) and one O(6) atom. The H(5)-O(11) bond length is 1.02 Å. The H(5)-O(6) bond length is 1.59 Å. In the fifth H site, H(6) is bonded in a distorted single-bond geometry to one O(11) and one O(4) atom. The H(6)-O(11) bond length is 1.03 Å. The H(6)-O(4) bond length is 1.58 Å. In the sixth H site, H(7) is bonded in a linear geometry to one O(12) and one O(3) atom. The H(7)-O(12) bond length is 1.01 Å. The H(7)-O(3) bond length is 1.57 Å. In the seventh H site, H(8) is bonded in a single-bond geometry to one O(12) atom. The H(8)-O(12) bond length is 0.97 Å. In the eighth H site, H(9) is bonded in a single-bond geometry to one O(13) atom. The H(9)-O(13) bond length is 0.97 Å. In the ninth H site, H(10) is bonded in a linear geometry to one O(13) and one O(5) atom. The H(10)-O(13) bond length is 1.02 Å. The H(10)-O(5) bond length is 1.57 Å. In the tenth H site, H(11) is bonded in a single-bond geometry to one O(14) atom. The H(11)-O(14) bond length is 0.97 Å. In the eleventh H site, H(12) is bonded in a distorted linear geometry to one O(10) and one O(14) atom. The H(12)-O(10) bond length is 1.65 Å. The H(12)-O(14) bond length is 1.01 Å. In the twelfth H site, H(13) is bonded in a distorted single-bond geometry to one O(15) and one O(9) atom. The H(13)-O(15) bond length is 1.02 Å. The H(13)-O(9) bond length is 1.59 Å. In the thirteenth H site, H(14) is bonded in a distorted single-bond geometry to one O(15) and one O(7) atom. The H(14)-O(15) bond length is 1.03 Å. The H(14)-O(7) bond length is 1.56 Å. In the fourteenth H site, H(15) is bonded in a single-bond geometry to one O(16) atom. The H(15)-O(16) bond length is 0.97 Å. In the fifteenth H site, H(16) is bonded in a linear geometry to one O(16) and one O(8) atom. The H(16)-O(16) bond length is 1.02 Å. The H(16)-O(8) bond length is 1.57 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one C(6) atom. In the second O site, O(2) is bonded in a single-bond geometry to one C(13) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Co(1), one C(15), and one H(7) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one C(15) and one H(6) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Co(1), one C(16), and one H(10) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one C(16) and one H(5) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one C(17) and one H(14) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Co(2), one C(17), and one H(16) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one C(18) and one H(13) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Co(3), one C(18), and one H(12) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to two equivalent Co(1), one H(5), and one H(6) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one Co(1), one H(7), and one H(8) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Co(1), one H(10), and one H(9) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal non-coplanar geometry to one Co(2), one H(11), and one H(12) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 120 degrees geometry to one Co(2), one Co(3), one H(13), and one H(14) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal non-coplanar geometry to one Co(3), one H(15), and one H(16) atom. Linkers: 4 [O]C(=O)c1ccc(C([O])=O)c2c1C(=O)c1c(C([O])=O)ccc(C([O])=O)c1C2=O. Metal clusters: 8 [Co]. The MOF has largest included sphere 4.15 A, density 1.53 g/cm3, surface area 3689.75 m2/g, accessible volume 0.25 cm3/g