Propellants Explosives Pyrotechnics, Vol.25, No.2, 75-80, 2000
Synthesis, thermal stability and impact stability of novel tetranitro-dipyridotetraazapentalene derivatives
The synthetic details for the construction of three new dipyridotetraazapentalene derivatives, 5H-pyrido[3",4":4',5'] [1,2,3]triazolo[1',2':1,2][1,2,3]triazolo[5,4-b]pyridin-6-ium inner salt (8), 5H-pyrido [3",2":4',5'][1,2,3]triazolo[1',2':1,2][1,2,3]triazolo[5,4-b]-pyridin-6-ium inner salt (15) and 5H-pyrido[2",3":4',5'] [1,2,3]-triazolo[1',2':1,2][1,2,3]triazolo[4,5-b]pyridin-6-ium inner salt (16) are presented. Nitration of (8) and (15) afforded the novel tetranitrodipyridotetraazapentalene derivatives, 2,4,8,10-tetranitro-5H-pyrido[3",4":4',5'][1,2,3]triazolo[1',2':1,2][1,2,3]-triazolo[5,4-b]-pyridin-6-ium inner salt (3) and 2,4,8,10-tetranitro-5N-pyrido [3", 2":4',5][1,2,3]triazolo[1',2':1,2][1,2,3]-triazolo[5,4-b]-pyridin-6-ium inner salt (4) in good yields. Both isomers, (3) and (4), exhibited high thermal stability (differential scanning calorimetric analysis and thermal gravimetric analysis) and were insensitive to impact (hammer/anvil test).
Keywords:HIGH-DENSITY