CoZn2C18H6O13 crystallizes in the tetragonal I4cm space group. Co(1) is bonded to one O(7), two equivalent O(4), and two equivalent O(5) atoms to form CoO5 square pyramids that share corners with two equivalent Zn(1)O4 tetrahedra. The Co(1)-O(7) bond length is 2.11 Å. Both Co(1)-O(4) bond lengths are 2.09 Å. Both Co(1)-O(5) bond lengths are 2.07 Å. Zn(1) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form ZnO4 tetrahedra that share  a cornercorner with one Co(1)O5 square pyramid and  a cornercorner with one Zn(1)O4 tetrahedra. The Zn(1)-O(1) bond length is 1.97 Å. The Zn(1)-O(2) bond length is 1.95 Å. The Zn(1)-O(3) bond length is 1.96 Å. The Zn(1)-O(7) bond length is 1.96 Å. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(4) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(4) bond length is 1.26 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(5) atom. The C(2)-C(4) bond length is 1.38 Å. The C(2)-C(5) bond length is 1.41 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(2), and one O(5) atom. The C(3)-C(6) bond length is 1.48 Å. The C(3)-O(2) bond length is 1.28 Å. The C(3)-O(5) bond length is 1.26 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(1) atom. The C(4)-C(6) bond length is 1.40 Å. The C(4)-H(1) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a single-bond geometry to one C(2), one C(7), and one H(2) atom. The C(5)-C(7) bond length is 1.37 Å. The C(5)-H(2) bond length is 0.93 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(3), one C(4), and one C(8) atom. The C(6)-C(8) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(5), one C(8), and one C(9) atom. The C(7)-C(8) bond length is 1.39 Å. The C(7)-C(9) bond length is 1.50 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(6), one C(7), and one H(3) atom. The C(8)-H(3) bond length is 0.93 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(3), and one O(6) atom. The C(9)-O(3) bond length is 1.28 Å. The C(9)-O(6) bond length is 1.23 Å. There are three inequivalent H sites. In the first H site, H(1) 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(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(8) atom. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a trigonal non-coplanar geometry to one Co(1) and two equivalent Zn(1) atoms. In the second O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(1) atom. In the third O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(3) atom. In the fourth O site, O(3) is bonded in a water-like geometry to one Zn(1) and one C(9) atom. In the fifth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(1) atom. In the sixth O site, O(5) is bonded in a bent 120 degrees geometry to one Co(1) and one C(3) atom. In the seventh O site, O(6) is bonded in a single-bond geometry to one C(9) atom. Linkers: 16 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 8 O=[C]O[Zn@]12O[C]O[Co]3(O[C]O[Zn@](O[C]=O)(O[C]O3)O1)O[C]O2. RCSR code: sab. The MOF has largest included sphere 8.06 A, density 1.11 g/cm3, surface area 3542.06 m2/g, accessible volume 0.59 cm3/g