CdH4(C3N2)2 crystallizes in the hexagonal P6_122 space group. Cd(1) is bonded in a see-saw-like geometry to two equivalent N(1) and two equivalent N(2) atoms. Both Cd(1)-N(1) bond lengths are 2.33 Å. Both Cd(1)-N(2) bond lengths are 2.27 Å. There are three inequivalent C sites. In the first C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(1), one N(2), and one H(2) atom. The C(3)-C(1) bond length is 1.36 Å. The C(3)-N(2) bond length is 1.36 Å. The C(3)-H(2) bond length is 0.95 Å. In the second C site, C(1) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(3) atom. The C(1)-C(1) bond length is 1.45 Å. The C(1)-C(2) bond length is 1.36 Å. In the third C site, C(2) is bonded in a 3-coordinate geometry to one C(1), one N(1), and one H(1) atom. The C(2)-N(1) bond length is 1.36 Å. The C(2)-H(1) bond length is 0.95 Å. There are two 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 1.36 Å. In the second N site, N(2) is bonded in a 3-coordinate geometry to one Cd(1), one C(3), and one N(1) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. Linkers: 4 [CH]1N=NC=C1C1=C[N]N=C1 ,1 [CH]1N=NC=C1C1=CN=N[CH]1 ,1 C1=N[N]C=C1[C]1C=NN=C1. Metal clusters: 6 [Cd]. The MOF has largest included sphere 5.68 A, density 1.30 g/cm3, surface area 3188.85 m2/g, accessible volume 0.45 cm3/g