CdC9H5(NO2)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 5-coordinate geometry to one N(1), one O(2), one O(3), one O(4), and one O(5) atom. The Cd(1)-N(1) bond length is 2.41 Å. The Cd(1)-O(2) bond length is 2.31 Å. The Cd(1)-O(3) bond length is 2.36 Å. The Cd(1)-O(4) bond length is 2.43 Å. The Cd(1)-O(5) bond length is 2.23 Å. In the second Cd site, Cd(2) is bonded in a 6-coordinate geometry to one N(3), one O(1), one O(2), one O(3), one O(7), and one O(8) atom. The Cd(2)-N(3) bond length is 2.42 Å. The Cd(2)-O(1) bond length is 2.65 Å. The Cd(2)-O(2) bond length is 2.29 Å. The Cd(2)-O(3) bond length is 2.30 Å. The Cd(2)-O(7) bond length is 2.43 Å. The Cd(2)-O(8) bond length is 2.40 Å. There are eighteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(3) and one H(1) atom. The C(1)-C(3) bond length is 1.31 Å. The C(1)-H(1) bond length is 0.93 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(3) and one H(2) atom. The C(2)-C(3) bond length is 1.36 Å. The C(2)-H(2) bond length is 0.93 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(4) atom. The C(3)-C(4) bond length is 1.52 Å. In the fourth C site, C(4) is bonded in a 3-coordinate geometry to one C(3), one N(2), one H(3), and one H(4) atom. The C(4)-N(2) bond length is 1.48 Å. The C(4)-H(3) bond length is 0.97 Å. The C(4)-H(4) bond length is 0.97 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(14), one C(6), and one N(2) atom. The C(5)-C(14) bond length is 1.49 Å. The C(5)-C(6) bond length is 1.38 Å. The C(5)-N(2) bond length is 1.40 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5), one C(7), and one H(5) atom. The C(6)-C(7) bond length is 1.39 Å. The C(6)-H(5) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(6) and one N(1) atom. The C(7)-N(1) bond length is 1.32 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(8)-O(3) bond length is 1.28 Å. The C(8)-O(4) bond length is 1.27 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(9)-O(1) bond length is 1.25 Å. The C(9)-O(2) bond length is 1.28 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(5), and one O(6) atom. The C(10)-C(11) bond length is 1.49 Å. The C(10)-O(5) bond length is 1.27 Å. The C(10)-O(6) bond length is 1.22 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(10), one C(12), and one N(4) atom. The C(11)-C(12) bond length is 1.36 Å. The C(11)-N(4) bond length is 1.38 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(13), and one H(6) atom. The C(12)-C(13) bond length is 1.41 Å. The C(12)-H(6) bond length is 0.93 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(12) and one N(3) atom. The C(13)-N(3) bond length is 1.36 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(7), and one O(8) atom. The C(14)-O(7) bond length is 1.22 Å. The C(14)-O(8) bond length is 1.27 Å. In the fifteenth C site, C(15) is bonded in a 3-coordinate geometry to one C(16); one N(4); and two equivalent H(7,8) atoms. The C(15)-C(16) bond length is 1.54 Å. The C(15)-N(4) bond length is 1.49 Å. Both C(15)-H(7,8) bond lengths are 0.97 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one C(15), one C(17), and one C(18) atom. The C(16)-C(17) bond length is 1.41 Å. The C(16)-C(18) bond length is 1.37 Å. In the seventeenth C site, C(17) is bonded in a distorted single-bond geometry to one C(16) and one H(9) atom. The C(17)-H(9) bond length is 0.93 Å. In the eighteenth C site, C(18) is bonded in a single-bond geometry to one C(16) and one H(10) atom. The C(18)-H(10) bond length is 0.93 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal non-coplanar geometry to one Cd(1), one C(7), and one N(2) atom. The N(1)-N(2) bond length is 1.34 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one C(4), one C(5), and one N(1) atom. In the third N site, N(3) is bonded in a 3-coordinate geometry to one Cd(2), one C(13), and one N(4) atom. The N(3)-N(4) bond length is 1.35 Å. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one C(11), one C(15), and one N(3) atom. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) 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(6) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(12) atom. In the seventh H site, H(7,8) is bonded in a single-bond geometry to one C(15) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(17) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(18) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cd(2) and one C(9) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one C(9) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one C(8) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one Cd(1) and one C(8) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Cd(1) and one C(10) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one C(10) atom. In the seventh O site, O(7) is bonded in a distorted L-shaped geometry to one Cd(2) and one C(14) atom. In the eighth O site, O(8) is bonded in a distorted L-shaped geometry to one Cd(2) and one C(14) atom. Linkers: 8 [O]C(=O)c1cc(C([O])=O)n(Cc2ccc(Cn3nc(C([O])=O)cc3C([O])=O)cc2)n1. Metal clusters: 16 [Cd]. The MOF has largest included sphere 7.58 A, density 1.44 g/cm3, surface area 3388.18 m2/g, accessible volume 0.32 cm3/g