CdC26H14(NO)4 crystallizes in the monoclinic C2/c space group. Cd(1) is bonded in a distorted pentagonal pyramidal geometry to two equivalent N(2), two equivalent O(1), and two equivalent O(2) atoms. Both Cd(1)-N(2) bond lengths are 2.42 Å. Both Cd(1)-O(1) bond lengths are 2.25 Å. Both Cd(1)-O(2) bond lengths are 2.39 Å. There are thirteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(1), one C(5), and one N(1) atom. The C(1)-C(1) bond length is 1.42 Å. The C(1)-C(5) bond length is 1.45 Å. The C(1)-N(1) bond length is 1.35 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(2), one C(5), and one N(2) atom. The C(2)-C(2) bond length is 1.46 Å. The C(2)-C(5) bond length is 1.42 Å. The C(2)-N(2) bond length is 1.35 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(7) and one H(1) atom. The C(3)-C(7) bond length is 1.42 Å. The C(3)-H(1) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(1), and one O(2) atom. The C(4)-C(7) bond length is 1.51 Å. The C(4)-O(1) bond length is 1.28 Å. The C(4)-O(2) bond length is 1.27 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(8) atom. The C(5)-C(8) bond length is 1.41 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(2) atom. The C(6)-N(1) bond length is 1.33 Å. The C(6)-H(2) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(10), one C(3), and one C(4) atom. The C(7)-C(10) bond length is 1.38 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(12), one C(5), and one H(3) atom. The C(8)-C(12) bond length is 1.38 Å. The C(8)-H(3) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(11), and one C(9) atom. The C(9)-C(10) bond length is 1.41 Å. The C(9)-C(11) bond length is 1.42 Å. The C(9)-C(9) bond length is 1.44 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(7), one C(9), and one H(4) atom. The C(10)-H(4) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(9) and one H(5) atom. The C(11)-H(5) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a distorted trigonal planar geometry to one C(13), one C(8), and one H(6) atom. The C(12)-C(13) bond length is 1.40 Å. The C(12)-H(6) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(12), one N(2), and one H(7) atom. The C(13)-N(2) bond length is 1.33 Å. The C(13)-H(7) bond length is 1.09 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to one C(1) and one C(6) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(13), and one C(2) atom. There are seven 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(8) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(10) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(11) 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) is bonded in a single-bond geometry to one C(13) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cd(1) and one C(4) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one C(4) atom. Linkers: 2 [O]C(=O)c1ccc2cc(C([O])=O)ccc2c1. Metal clusters: 2 [Cd]. RCSR code: pts. The MOF has largest included sphere 2.08 A, density 1.83 g/cm3, surface area 3675.26 m2/g, accessible volume 0.10 cm3/g