High-Energy and Thermally Stable Energetic Materials Based on an Azo-Fused Dinitramino Compound.

Here, azo-fused dinitramino energetic compound 5,5'-dinitramino-8,8'-azo-1,2,5-oxadiazolo[3,4- e ][1,2,4]triazolo[4,3- a ]pyrazine ( 4 ) and its energetic salts 5 - 7 have been prepared. Azo-fused dinitramino compound 4 exhibits excellent detonation performance ( P = 36.13 GPa, and D v = 9126 m s -1 ), which is obviously better than that of RDX ( D v = 8796 m s -1 , and P = 33.60 GPa). In addition, the thermal stability of carbonyl compound 2 ( T d = 325 °C) is similar to that of HNS ( T d = 318 °C) and 2 exhibits better energy properties. These properties indicate that azo-dinitramino compound 4 has potential as a new secondary explosive, while carbonyl compound 2 also has potential as a new type of heat-resistant explosive.