New hydrazinium salts of 5,5 '-azotetrazolate

Salts of the 5,5'-azotetrazolate dianion with several different hydrazinium cations were prepared. The compounds were characterized by elemental analy sis, vibrational spectroscopy (IR, Raman) and multinuclear NMR spectroscopy (H-1, C-13, N-14). The crystal structures of the di-tert-butylhydrazinium, the ethylenedihydrazinium, the diguanidinium and the bis-triamino-guanidin ium azotetrazolate were determined. The thermal, shock and friction sensiti vities of all compounds were investigated and their explosion products were analysed. For the 5,5'-azotetrazolate dianion the structure was calculated with density functional theory (B3-LYP). An NBO analysis was performed for the 5,5'-azotetrazolate dianion in order to understand the charge distribu tion of the dianion.