Progress in synthesis and properties of nitrogen-rich compounds

Nitrogen-rich compounds are promising materials for gas generating pyrotechnic compositions. The synthesis and properties of nitrogen-rich compounds with high nitrogen content, good thermal stability and high formation enthalpy on the basis of tetrazole, tetrazine and furazan structures are reviewed. The synthetic routes of 3,6-bis (1H-1,2,3, 4-tetrazol-5-yl-amino)-1,2,4,5-tetrazine (BTATZ), 3,3'-azobis(6-ainino-1,2,4,5-tetrazine) (DAAT), 1,1'-dimethyl-5,5'-azotetrazole (DMATZ) and 3,6-bis(2H-5-tetrazol-yl)-1,2,4,5-tetrazine (BTT) are mainly discussed.