CoC12H18O7 crystallizes in the tetragonal P-42_1c space group. Co(1) is bonded to one O(1), one O(3), one O(5), one O(6), and two equivalent O(7) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 49°. The Co(1)-O(1) bond length is 2.10 Å. The Co(1)-O(3) bond length is 2.09 Å. The Co(1)-O(5) bond length is 2.07 Å. The Co(1)-O(6) bond length is 2.08 Å. There is one shorter (2.14 Å) and one longer (2.15 Å) Co(1)-O(7) bond length. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-C(6) bond length is 1.40 Å. The C(1)-C(7) bond length is 1.49 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one C(3), and one H(7) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-H(7) bond length is 1.09 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(8) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(8) bond length is 1.49 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(8) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(8) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(9) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-C(9) bond length is 1.53 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(1), one C(5), and one H(9) atom. The C(6)-H(9) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.30 Å. The C(7)-O(2) bond length is 1.26 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.30 Å. The C(8)-O(4) bond length is 1.26 Å. In the ninth C site, C(9) is bonded in a tetrahedral geometry to one C(10), one C(11), one C(12), and one C(5) atom. The C(9)-C(10) bond length is 1.54 Å. The C(9)-C(11) bond length is 1.54 Å. The C(9)-C(12) bond length is 1.53 Å. In the tenth C site, C(10) is bonded in a trigonal non-coplanar geometry to one C(9), one H(10), one H(11), and one H(12) atom. 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(12) bond length is 1.10 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal non-coplanar geometry to one C(9), one H(13), one H(14), and one H(15) atom. The C(11)-H(13) bond length is 1.10 Å. The C(11)-H(14) bond length is 1.10 Å. The C(11)-H(15) bond length is 1.10 Å. In the twelfth C site, C(12) is bonded in a trigonal non-coplanar geometry to one C(9), one H(16), one H(17), and one H(18) atom. The C(12)-H(16) bond length is 1.10 Å. The C(12)-H(17) bond length is 1.10 Å. The C(12)-H(18) bond length is 1.10 Å. There are eighteen inequivalent H sites. In the first H site, H(16) is bonded in a single-bond geometry to one C(12) atom. In the second H site, H(1) is bonded in a distorted linear geometry to one O(3) and one O(5) atom. The H(1)-O(3) bond length is 1.60 Å. The H(1)-O(5) bond length is 1.02 Å. In the third H site, H(17) is bonded in a single-bond geometry to one C(12) atom. In the fourth H site, H(2) is bonded in a single-bond geometry to one O(5) atom. The H(2)-O(5) bond length is 0.97 Å. In the fifth H site, H(18) is bonded in a single-bond geometry to one C(12) atom. In the sixth H site, H(3) is bonded in a distorted linear geometry to one O(1) and one O(6) atom. The H(3)-O(1) bond length is 1.61 Å. The H(3)-O(6) bond length is 1.01 Å. In the seventh H site, H(4) is bonded in a single-bond geometry to one O(6) atom. The H(4)-O(6) bond length is 0.97 Å. In the eighth H site, H(5) is bonded in a distorted linear geometry to one O(2) and one O(7) atom. The H(5)-O(2) bond length is 1.50 Å. The H(5)-O(7) bond length is 1.04 Å. In the ninth H site, H(6) is bonded in a distorted linear geometry to one O(4) and one O(7) atom. The H(6)-O(4) bond length is 1.50 Å. The H(6)-O(7) bond length is 1.04 Å. In the tenth H site, H(7) is bonded in a single-bond geometry to one C(2) atom. In the eleventh H site, H(8) is bonded in a single-bond geometry to one C(4) atom. In the twelfth H site, H(9) is bonded in a single-bond geometry to one C(6) atom. In the thirteenth H site, H(10) is bonded in a single-bond geometry to one C(10) atom. In the fourteenth H site, H(11) is bonded in a single-bond geometry to one C(10) atom. In the fifteenth H site, H(12) is bonded in a single-bond geometry to one C(10) atom. In the sixteenth H site, H(13) is bonded in a single-bond geometry to one C(11) atom. In the seventeenth H site, H(14) is bonded in a single-bond geometry to one C(11) atom. In the eighteenth H site, H(15) is bonded in a single-bond geometry to one C(11) atom. There are seven inequivalent O sites. In the first O site, O(2) is bonded in a water-like geometry to one C(7) and one H(5) atom. In the second O site, O(3) is bonded in a trigonal planar geometry to one Co(1), one C(8), and one H(1) atom. In the third O site, O(4) is bonded in a water-like geometry to one C(8) and one H(6) atom. In the fourth O site, O(5) is bonded in a distorted water-like geometry to one Co(1), one H(1), and one H(2) atom. In the fifth O site, O(6) is bonded in a distorted water-like geometry to one Co(1), one H(3), and one H(4) atom. In the sixth O site, O(7) is bonded in a distorted water-like geometry to two equivalent Co(1), one H(5), and one H(6) atom. In the seventh O site, O(1) is bonded in a trigonal planar geometry to one Co(1), one C(7), and one H(3) atom. Linkers: 8 CC(C)(C)c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 8 [Co]. The MOF has largest included sphere 9.05 A, density 1.15 g/cm3, surface area 4622.98 m2/g, accessible volume 0.36 cm3/g