Crystal structure of the high-energy-density material guanylurea dipicryl­amide

The title compound, 1-carbamoylguanidinium bis­(2,4,6-tri­nitro­phen­yl)amide [H(2)NC(=O)NHC(NH(2))(2)](+)[N{C(6)H(2)(NO(2))(3)-2,4,6}(2)](−) (= guanylurea dipicryl­amide), was prepared as dark-red block-like crystals in 70% yield by salt-metathesis reaction between guanylurea sulfate and sodium dipicryl­amide. In the solid state, the new compound builds up an array of mutually linked guanylurea cations and dipicryl­amide anions. The crystal packing is dominated by an extensive network of N—H⋯O hydrogen bonds, resulting in a high density of 1.795 Mg m(−3), which makes the title compound a potential secondary explosive.