Impact Insensitive Dianionic Dinitrourea Salts: The CN4O52- Anion Paired with Nitrogen-Rich Cations

Having examined the energetic properties of dinitrourea (DNU) as it monoanion, this study was extended to the syntheses and characterization or ten DNU dianionic sails by the metathesis of tetrazolium and guanidinium sulfates with in situ-generated barium DNU in aqueous solution, These materials are impact insensitive. They were fully characterized by NMR, elemental analysis, IR, DSC, and TGA. Bis(guanylguanidinium) DNU dianionic salt (9) crystallizes in the triclinic space group P-1, The detonation pressure (P) values calculated for these salts range from 19.6 to 29.1 GPa, and the detonation velocities (gamma(D)) range from 7521 to 8908 m/s, which make them competitive energetic materials. The chlorine-free DNU dianionic salts are green, and the straightforward synthesis. The process avoids the use of costly silver DNU dianion compares, very favorably with dinitramide as it novel oxidative Species.