CdC2N3H2Cl crystallizes in the hexagonal P6_522 space group. Cd(1) is bonded to one N(1), two equivalent N(2), and two equivalent Cl(1) atoms to form corner-sharing CdN3Cl2 trigonal bipyramids. The Cd(1)-N(1) bond length is 2.26 Å. Both Cd(1)-N(2) bond lengths are 2.28 Å. Both Cd(1)-Cl(1) bond lengths are 2.66 Å. C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(1) atom. The C(1)-N(1) bond length is 1.35 Å. The C(1)-N(2) bond length is 1.33 Å. The C(1)-H(1) bond length is 1.08 Å. There are two inequivalent N sites. In the first N site, N(2) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), and one N(2) atom. The N(2)-N(2) bond length is 1.37 Å. In the second N site, N(1) is bonded in a trigonal planar geometry to one Cd(1) and two equivalent C(1) atoms. H(1) is bonded in a single-bond geometry to one C(1) atom. Cl(1) is bonded in a water-like geometry to two equivalent Cd(1) atoms. Linkers: 3 [N]1=CN=NC=1 ,3 C1=NN=C[N]1. Metal clusters: 6 [Cd]. The MOF has largest included sphere 7.12 A, density 1.66 g/cm3, surface area 2637.49 m2/g, accessible volume 0.36 cm3/g