CdH6(C7O2)2 crystallizes in the cubic P4_132 space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in an octahedral geometry to six equivalent O(2) atoms. All Cd(1)-O(2) bond lengths are 2.22 Å. In the second Cd site, Cd(2) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. All Cd(2)-O(1) bond lengths are 2.24 Å. All Cd(2)-O(2) bond lengths are 2.88 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.46 Å. The C(1)-O(1) bond length is 1.23 Å. The C(1)-O(2) bond length is 1.22 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(7) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(7) bond length is 1.39 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(4), and one H(1) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3) and two equivalent C(5) atoms. There is one shorter (1.39 Å) and one longer (1.51 Å) C(4)-C(5) bond length. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(6) and two equivalent C(4) atoms. The C(5)-C(6) bond length is 1.39 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5) and one H(2) atom. The C(6)-H(2) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a single-bond geometry to one C(2) and one H(3) atom. The C(7)-H(3) 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(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Cd(2) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cd(1), one Cd(2), and one C(1) atom. Linkers: 8 [O]C(=O)c1ccc2c(c1)c1ccc(C([O])=O)cc1c1ccc(C([O])=O)cc21. Metal clusters: 4 [C]1O[Cd]2O[C]O[Cd]34(O1)(O[C]O2)O[C]O[Cd](O[C]O3)O[C]O4. The MOF has largest included sphere 10.30 A, density 0.81 g/cm3, surface area 3317.77 m2/g, accessible volume 0.80 cm3/g