CdC18H12(N3O2)2 crystallizes in the orthorhombic Pnc2 space group. Cd(1) is bonded in a distorted octahedral geometry to two equivalent N(1), two equivalent O(1), and two equivalent O(2) atoms. Both Cd(1)-N(1) bond lengths are 2.29 Å. Both Cd(1)-O(1) bond lengths are 2.38 Å. Both Cd(1)-O(2) bond lengths are 2.41 Å. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(2), one N(3), and one H(1) atom. The C(1)-N(2) bond length is 1.32 Å. The C(1)-N(3) bond length is 1.38 Å. The C(1)-H(1) bond length is 1.09 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(1), one N(3), and one H(2) atom. The C(2)-N(1) bond length is 1.32 Å. The C(2)-N(3) bond length is 1.37 Å. The C(2)-H(2) bond length is 1.08 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4), one C(8), and one N(3) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(8) bond length is 1.40 Å. The C(3)-N(3) bond length is 1.43 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(3) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(3) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one H(4) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-H(4) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(5), one C(7), and one C(9) atom. The C(6)-C(7) bond length is 1.40 Å. The C(6)-C(9) bond length is 1.50 Å. In the seventh C site, C(7) is bonded in a single-bond geometry to one C(6) and one H(5) atom. The C(7)-H(5) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(3) and one H(6) atom. The C(8)-H(6) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(2) atom. The C(9)-O(1) bond length is 1.28 Å. The C(9)-O(2) bond length is 1.28 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(2), and one N(2) atom. The N(1)-N(2) bond length is 1.38 Å. In the second N site, N(2) is bonded in a distorted single-bond geometry to one C(1) and one N(1) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(3) atom. There are six 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(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(8) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Cd(1) and one C(9) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Cd(1) and one C(9) atom. Linkers: 4 [O]C(=O)c1ccc(-n2cnnc2)cc1. Metal clusters: 2 [C]1O[Cd]2(O1)O[C]O2. The MOF has largest included sphere 5.74 A, density 1.18 g/cm3, surface area 4185.20 m2/g, accessible volume 0.39 cm3/g