CdC8H4O4Cl is Copper structured and crystallizes in the tetragonal P4_2/n space group. The structure is zero-dimensional and consists of four CdC8H4O4Cl clusters. Cd(1) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent Cl(1) atoms to form distorted edge-sharing CdCl2O4 octahedra. The Cd(1)-O(1) bond length is 2.29 Å. The Cd(1)-O(2) bond length is 2.45 Å. The Cd(1)-O(3) bond length is 2.36 Å. The Cd(1)-O(4) bond length is 2.34 Å. Both Cd(1)-Cl(1) bond lengths are 2.57 Å. There are eight 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 1.50 Å. The C(1)-C(3) bond length is 1.38 Å. The C(1)-C(4) bond length is 1.37 Å. In the second C site, C(2) is bonded in a bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(2)-O(1) bond length is 1.26 Å. The C(2)-O(2) bond length is 1.25 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a single-bond geometry to one C(1) and one H(2) atom. The C(4)-H(2) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(6) and one H(3,4) atom. The C(5)-C(6) bond length is 1.38 Å. The C(5)-H(3,4) bond length is 0.93 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 1.51 Å. The C(6)-C(8) bond length is 1.38 Å. In the seventh C site, C(7) is bonded in a bent 120 degrees geometry to one C(6), one O(3), and one O(4) atom. The C(7)-O(3) bond length is 1.24 Å. The C(7)-O(4) bond length is 1.26 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(6) and one H(3,4) atom. The C(8)-H(3,4) bond length is 0.93 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3,4) is bonded in a single-bond geometry to one C(5) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in an L-shaped geometry to one Cd(1) and one C(2) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Cd(1) and one C(2) atom. In the third O site, O(3) is bonded in an L-shaped geometry to one Cd(1) and one C(7) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one Cd(1) and one C(7) atom. Cl(1) is bonded in an L-shaped geometry to two equivalent Cd(1) atoms. Linkers: 8 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 4 Cl[Cd]12(O[C]O1)O[C]O2.Cl[Cd]12(O[C]O1)O[C]O2. RCSR code: lvt. The MOF has largest included sphere 9.47 A, density 0.67 g/cm3, surface area 3785.88 m2/g, accessible volume 1.11 cm3/g