Cu3C8N7H4 crystallizes in the monoclinic C2/c space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a tetrahedral geometry to one C(5), one N(1), one N(2), and one N(4) atom. The Cu(1)-C(5) bond length is 1.94 Å. The Cu(1)-N(1) bond length is 2.04 Å. The Cu(1)-N(2) bond length is 2.06 Å. The Cu(1)-N(4) bond length is 1.96 Å. In the second Cu site, Cu(2) is bonded in a 3-coordinate geometry to two equivalent C(5) and one N(3) atom. Both Cu(2)-C(5) bond lengths are 2.00 Å. The Cu(2)-N(3) bond length is 2.00 Å. There are five inequivalent C sites. In the first C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(2) atom. The C(2)-C(1) bond length is 1.39 Å. The C(2)-C(3) bond length is 1.40 Å. The C(2)-H(2) bond length is 1.09 Å. In the second C site, C(3) is bonded in a trigonal planar geometry to one C(4) and two equivalent C(2) atoms. The C(3)-C(4) bond length is 1.46 Å. In the third C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3) and two equivalent N(1) atoms. Both C(4)-N(1) bond lengths are 1.35 Å. In the fourth C site, C(5) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(2), and one N(4) atom. The C(5)-N(4) bond length is 1.19 Å. In the fifth C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(3), and one H(1) atom. The C(1)-N(3) bond length is 1.35 Å. The C(1)-H(1) bond length is 1.09 Å. There are four inequivalent N sites. In the first N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one N(1), and one N(2) atom. The N(2)-N(1) bond length is 1.34 Å. The N(2)-N(2) bond length is 1.33 Å. In the second N site, N(3) is bonded in a trigonal planar geometry to one Cu(2) and two equivalent C(1) atoms. In the third N site, N(4) is bonded in a distorted linear geometry to one Cu(1) and one C(5) atom. In the fourth N site, N(1) is bonded in a 3-coordinate geometry to one Cu(1), one C(4), and one N(2) atom. There are two 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. Linkers: 2 c1cc(C2=NN=N[N]2)ccn1. Metal clusters: 6 [Cu]. The MOF has largest included sphere 2.13 A, density 2.66 g/cm3, surface area 2411.99 m2/g, accessible volume 0.05 cm3/g