CuH4(C3N2)2 crystallizes in the orthorhombic Imma space group. Cu(1) is bonded in a square co-planar geometry to four equivalent N(1) atoms. All Cu(1)-N(1) bond lengths are 2.01 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one H(1) atom. The C(1)-C(2) bond length is 1.36 Å. The C(1)-N(1) bond length is 1.36 Å. The C(1)-H(1) bond length is 1.14 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(2) and two equivalent C(1) atoms. The C(2)-C(2) bond length is 1.47 Å. N(1) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(1), and one N(1) atom. The N(1)-N(1) bond length is 1.36 Å. H(1) is bonded in a single-bond geometry to one C(1) atom. Linkers: 2 [CH]1N=NC=C1C1=C[N]N=C1. Metal clusters: 2 [Cu]. The MOF has largest included sphere 5.43 A, density 1.32 g/cm3, surface area 3406.72 m2/g, accessible volume 0.36 cm3/g