ZnC8H4O4 is beta Polonium structured and crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of two ZnC8H4O4 clusters. Zn(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Zn(1)-O(1) bond lengths are 2.01 Å. Both Zn(1)-O(2) bond lengths are 2.04 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(4) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-C(3) bond length is 1.37 Å. The C(1)-C(4) bond length is 1.51 Å. In the second 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 0.95 Å. In the third C site, C(3) is bonded in a single-bond geometry to one C(1) and one H(2) atom. The C(3)-H(2) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(4)-O(1) bond length is 1.26 Å. The C(4)-O(2) bond length is 1.25 Å. There are two 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. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(4) atom. Linkers: 2 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 1 [C]1O[Zn]23O[C]O[Zn](O1)(O[C]O2)O[C]O3. RCSR code: sql. The MOF has largest included sphere 5.57 A, density 1.27 g/cm3, surface area 3664.99 m2/g, accessible volume 0.39 cm3/g