Cu3C6N9H6O2 crystallizes in the cubic Fd-3c space group. Cu(1) is bonded to one N(2), two equivalent N(1), and two equivalent O(1) atoms to form distorted edge-sharing CuN3O2 trigonal bipyramids. The Cu(1)-N(2) bond length is 2.00 Å. Both Cu(1)-N(1) bond lengths are 1.97 Å. Both Cu(1)-O(1) bond lengths are 2.03 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 1.32 Å. The C(1)-N(2) bond length is 1.34 Å. The C(1)-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 3-coordinate geometry to one Cu(1), one C(1), and one N(1) atom. The N(1)-N(1) bond length is 1.37 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(1) and two equivalent C(1) atoms. H(1) is bonded in a single-bond geometry to one C(1) atom. O(1) is bonded in a distorted single-bond geometry to three equivalent Cu(1) and one O(1) atom. The O(1)-O(1) bond length is 0.96 Å. Linkers: 30 [N]1=CN=NC=1 ,43 C1=NN=C[N]1 ,23 C1=NC=N[N]1. Metal clusters: 14 N1=[Cu]2/N=N\[Cu]/N=N\[Cu](=N1)OO2 ,9 [N]1N=[Cu]2N=N[Cu](=N[N][Cu]1)OO2 ,9 [O]O[Cu]1=N[N][Cu]/N=N\[Cu]/N=N\1. The MOF has largest included sphere 6.73 A, density 1.50 g/cm3, surface area 2745.72 m2/g, accessible volume 0.39 cm3/g