CdC6H6(N2O)2 crystallizes in the trigonal R-3 space group. Cd(1) is bonded in a distorted trigonal bipyramidal geometry to one N(1), one N(2), one N(3), one O(1), and one O(2) atom. The Cd(1)-N(1) bond length is 2.28 Å. The Cd(1)-N(2) bond length is 2.22 Å. The Cd(1)-N(3) bond length is 2.21 Å. The Cd(1)-O(1) bond length is 2.21 Å. The Cd(1)-O(2) bond length is 2.41 Å. There are six inequivalent C sites. In the first C site, C(3) is bonded in a distorted bent 120 degrees geometry to one N(2) and one O(1) atom. The C(3)-N(2) bond length is 1.29 Å. The C(3)-O(1) bond length is 1.29 Å. In the second C site, C(4) is bonded in a distorted single-bond geometry to one N(3) atom. The C(4)-N(3) bond length is 1.37 Å. In the third C site, C(5) is bonded in a 3-coordinate geometry to one C(2), one H(2), one H(3), and one H(4) atom. The C(5)-C(2) bond length is 1.48 Å. The C(5)-H(2) bond length is 0.82 Å. The C(5)-H(3) bond length is 0.89 Å. The C(5)-H(4) bond length is 1.23 Å. In the fourth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one N(4) and one O(2) atom. The C(6)-N(4) bond length is 1.30 Å. The C(6)-O(2) bond length is 1.26 Å. In the fifth C site, C(1) is bonded in a distorted single-bond geometry to one N(1) atom. The C(1)-N(1) bond length is 1.39 Å. In the sixth C site, C(2) is bonded in a distorted trigonal planar geometry to one C(5), one N(1), and one N(3) atom. The C(2)-N(1) bond length is 1.33 Å. The C(2)-N(3) bond length is 1.34 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Cd(1), one C(1), and one C(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cd(1), one C(3), and one H(1) atom. The N(2)-H(1) bond length is 0.94 Å. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(2), and one C(4) atom. In the fourth N site, N(4) is bonded in a distorted water-like geometry to one C(6), one H(5), and one H(6) atom. The N(4)-H(5) bond length is 0.95 Å. The N(4)-H(6) bond length is 0.78 Å. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) 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 N(4) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one N(4) 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(3) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cd(1) and one C(6) atom. Linkers: 3 [CH2]C1=NC(C(N)=O)=C(C([NH])=O)[N]1 ,15 [CH2]C1=N[C](C([NH])=O)C(C(N)=O)=N1. Metal clusters: 18 [Cd]. The MOF has largest included sphere 8.83 A, density 1.43 g/cm3, surface area 3249.25 m2/g, accessible volume 0.41 cm3/g