CdC8H6(N2O)2 crystallizes in the orthorhombic Ccc2 space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a distorted pentagonal pyramidal geometry to two equivalent N(1), two equivalent O(1), and two equivalent O(2) atoms. Both Cd(1)-N(1) bond lengths are 2.25 Å. Both Cd(1)-O(1) bond lengths are 2.39 Å. Both Cd(1)-O(2) bond lengths are 2.45 Å. In the second Cd site, Cd(2) is bonded in a 4-coordinate geometry to two equivalent N(2) and two equivalent N(4) atoms. Both Cd(2)-N(2) bond lengths are 2.27 Å. Both Cd(2)-N(4) bond lengths are 2.32 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one N(1), and one H(1) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-N(1) bond length is 1.37 Å. The C(1)-H(1) bond length is 1.08 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(1), one N(2), and one H(2) atom. The C(2)-N(2) bond length is 1.38 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 N(1), and one N(2) atom. The C(3)-C(4) bond length is 1.46 Å. The C(3)-N(1) bond length is 1.35 Å. The C(3)-N(2) bond length is 1.36 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one N(3), and one N(4) atom. The C(4)-N(3) bond length is 1.37 Å. The C(4)-N(4) bond length is 1.34 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(6), one N(3), and one H(3) atom. The C(5)-C(6) bond length is 1.37 Å. The C(5)-N(3) bond length is 1.38 Å. The C(5)-H(3) bond length is 1.08 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one N(4), and one H(4) atom. The C(6)-N(4) bond length is 1.38 Å. The C(6)-H(4) bond length is 1.08 Å. In the seventh C site, C(7) is bonded in a distorted trigonal non-coplanar geometry to one N(3), one H(5), and one H(6) atom. The C(7)-N(3) bond length is 1.45 Å. The C(7)-H(5) bond length is 1.10 Å. The C(7)-H(6) bond length is 1.10 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(8)-O(1) bond length is 1.28 Å. The C(8)-O(2) bond length is 1.26 Å. There are four inequivalent N sites. In the first N site, N(3) is bonded in a trigonal planar geometry to one C(4), one C(5), and one C(7) atom. In the second N site, N(4) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(4), and one C(6) atom. In the third N site, N(1) is bonded in a trigonal planar geometry to one Cd(1), one C(1), and one C(3) atom. In the fourth N site, N(2) is bonded in a distorted trigonal planar geometry to one Cd(2), 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(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(6) 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(7) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cd(1) and one C(8) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cd(1) and one C(8) atom. Linkers: 3 [O]C(=O)Cn1ccnc1C1=NC=C[N]1 ,1 [O]C(=O)Cn1ccnc1C1=N[CH]C=N1. Metal clusters: 2 [C]1O[Cd]2(O1)O[C]O2 ,2 [Cd]. The MOF has largest included sphere 2.44 A, density 2.18 g/cm3, surface area 3302.02 m2/g, accessible volume 0.10 cm3/g