CdC6H6(NO2)2 crystallizes in the tetragonal P4_2/nmc space group. Cd(1) is bonded to two equivalent N(1) and four equivalent O(1) atoms to form distorted edge-sharing CdN2O4 pentagonal pyramids. Both Cd(1)-N(1) bond lengths are 2.26 Å. There are two shorter (2.28 Å) and two longer (2.42 Å) Cd(1)-O(1) bond lengths. There are four inequivalent C sites. In the first C site, C(4) is bonded in a 6-coordinate geometry to one C(3), two equivalent H(1), two equivalent H(2), and two equivalent H(3) atoms. The C(4)-C(3) bond length is 1.48 Å. Both C(4)-H(1) bond lengths are 0.96 Å. Both C(4)-H(2) bond lengths are 0.96 Å. Both C(4)-H(3) bond lengths are 0.96 Å. In the second C site, C(1) is bonded in a distorted single-bond geometry to one C(1), one C(2), and one N(1) atom. The C(1)-C(1) bond length is 1.38 Å. The C(1)-C(2) bond length is 1.47 Å. The C(1)-N(1) bond length is 1.37 Å. In the third C site, C(2) is bonded in a distorted 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 1.26 Å. In the fourth C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4) and two equivalent N(1) atoms. Both C(3)-N(1) bond lengths are 1.34 Å. N(1) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), and one C(3) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a distorted single-bond geometry to one C(4) atom. There are two inequivalent O sites. In the first O site, O(2) is bonded in a single-bond geometry to one C(2) atom. In the second O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cd(1) and one C(2) atom. Linkers: 3 C.[H].[H].[O]C(=O)[C]1N=[C]N=C1C([O])=O ,2 C.[H][H].[O]C(=O)C1=N[C]N=C1C([O])=O ,1 C.[H].[H].[O]C(=O)C1=C(C([O])=O)N=[C][N]1 ,1 C.[H][H].[O]C(=O)C1=C(C([O])=O)N=[C][N]1. Metal clusters: 8 [Cd]. The MOF has largest included sphere 4.00 A, density 2.15 g/cm3, surface area 2967.43 m2/g, accessible volume 0.22 cm3/g