CdC7H6(NO2)2 crystallizes in the monoclinic Cc space group. Cd(1) is bonded to one N(1), one N(2), one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form distorted corner-sharing CdN2O5 pentagonal bipyramids. The Cd(1)-N(1) bond length is 2.55 Å. The Cd(1)-N(2) bond length is 2.31 Å. The Cd(1)-O(1) bond length is 2.61 Å. The Cd(1)-O(2) bond length is 2.29 Å. The Cd(1)-O(3) bond length is 2.49 Å. There is one shorter (2.44 Å) and one longer (2.56 Å) Cd(1)-O(4) bond length. 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 1.50 Å. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.29 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(4) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(4) bond length is 1.39 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one N(2), and one H(3) atom. The C(3)-N(2) bond length is 1.34 Å. The C(3)-H(3) bond length is 1.08 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one H(4) atom. The C(4)-C(6) bond length is 1.40 Å. The C(4)-H(4) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(6), one N(2), and one H(5) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-N(2) bond length is 1.34 Å. The C(5)-H(5) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(4), one C(5), and one N(1) atom. The C(6)-N(1) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one H(6), one O(3), and one O(4) atom. The C(7)-H(6) bond length is 1.10 Å. The C(7)-O(3) bond length is 1.27 Å. The C(7)-O(4) bond length is 1.28 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Cd(1), one C(6), one H(1), and one H(2) atom. The N(1)-H(1) bond length is 1.03 Å. The N(1)-H(2) bond length is 1.03 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cd(1), one C(3), and one C(5) atom. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one N(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(4) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(5) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(7) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Cd(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Cd(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cd(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Cd(1) and one C(7) atom. Linkers: 2 Nc1cncc(C([O])=O)c1. Metal clusters: 2 [Cd]. The MOF has largest included sphere 1.54 A, density 2.48 g/cm3, surface area 2651.45 m2/g, accessible volume 0.05 cm3/g