Syntheses of Energetic cyclo-Pentazolate Salts.

Three energetic salts of cyclo-N5 - were synthesized via a metathesis reaction of barium pentazolate and sulfates which was driven by the precipitation of BaSO4 . All the energetic cyclo-N5 - salts were characterized by single-crystal X-ray diffraction, infrared (IR), 1 H and 13 C multinuclear NMR spectroscopies, thermal analysis (TGA and DSC), and elemental analysis. The salts exhibit relatively good detonation performance with low sensitivities and good thermal stabilities. This new method opens the door to exploring more pentazolate anion-containing high-performance energetic materials.