CdC6H8(N5O)2 crystallizes in the orthorhombic Fdd2 space group. Cd(1) is bonded in an octahedral geometry to two equivalent N(2), two equivalent N(3), and two equivalent O(1) atoms. Both Cd(1)-N(2) bond lengths are 2.24 Å. Both Cd(1)-N(3) bond lengths are 2.35 Å. Both Cd(1)-O(1) bond lengths are 2.45 Å. There are three 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 N(5) atom. The C(1)-N(2) bond length is 1.34 Å. The C(1)-N(3) bond length is 1.35 Å. The C(1)-N(5) bond length is 1.38 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3), one N(5), and one O(1) atom. The C(2)-C(3) bond length is 1.50 Å. The C(2)-N(5) bond length is 1.37 Å. The C(2)-O(1) bond length is 1.25 Å. In the third C site, C(3) is bonded in a distorted trigonal non-coplanar geometry to one C(2), one H(2), one H(3), and one H(4) atom. The C(3)-H(2) bond length is 1.10 Å. The C(3)-H(3) bond length is 1.10 Å. The C(3)-H(4) bond length is 1.10 Å. There are five inequivalent N sites. In the first N site, N(3) is bonded in a 3-coordinate geometry to one Cd(1), one C(1), and one N(4) atom. The N(3)-N(4) bond length is 1.35 Å. In the second N site, N(4) is bonded in a water-like geometry to one N(1) and one N(3) atom. The N(4)-N(1) bond length is 1.30 Å. In the third N site, N(5) is bonded in a trigonal planar geometry to one C(1), one C(2), and one H(1) atom. The N(5)-H(1) bond length is 1.05 Å. In the fourth N site, N(1) is bonded in a 3-coordinate geometry to one N(2), one N(4), and one H(1) atom. The N(1)-N(2) bond length is 1.35 Å. The N(1)-H(1) bond length is 1.81 Å. In the fifth N site, N(2) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), and one N(1) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) and one N(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. O(1) is bonded in a distorted single-bond geometry to one Cd(1) and one C(2) atom. Linkers: 4 CC(=O)NC1=NN=N[N]1. Metal clusters: 2 [Cd]. The MOF has largest included sphere 2.32 A, density 1.99 g/cm3, surface area 3703.18 m2/g, accessible volume 0.15 cm3/g