In this study, a series of energetic compounds featuring intramolecular hydrogen bonds were demonstrated by the substituted reaction with 5-aminotetrazole. Notably, the representative energetic compounds 3 and 6 exhibit high density (1.910 g cm −3 and 1.905 g cm −3 ) and good detonation properties (3: D = 9072 m s −1 , P = 37.1 GPa, 6: D = 8861 m s −1 , P = 32.3 GPa). Additionally, combining a series of other advantages such as simple preparation, good thermostability (T d = 265 °C), and insensitivity (IS > 40 J, FS > 360 N), compound 6 is an ideal insensitive HEDM candidate.

No abstract

A series of energetic compounds based on nitropyrazole and dinitromethyl group were synthesized. The hydroxylammonium salt 7b exhibited satisfactory calculated detonation performance and the potassium salt 5 could be used as a potential green primary explosive.

Energetic materials, comprising furoxan and 1,2,4-oxadiazole backbones, were synthesized by nitrating 3,3′-bis(5-amino-1,2,4-oxadiazol-3-yl)-4,4′-azofuroxan, followed by cation metathesis, giving compounds with high density, high detonation performance and acceptable sensitivities.

The introduction of azido groups into the energetic skeleton has the advantages of increasing the energy level. In this work, a series of azido compounds with good stability and low sensitivity as well as tetrazole-fused compounds based on energetic salts are synthesized. The detonation pressures and velocities of these new compounds fall in the ranges of 18.9–27.3 GPa and 7153–8450 m s–1, respectively. The detonation velocity of the tetrazole-fused compounds based on the potassium salts 3, 6, and 7 are 7810, 7153, and 7989 m s–1, respectively. Also, their decomposition temperatures (244, 237, and 240 °C, respectively) are higher than that of traditional explosive RDX (204 °C). Notably, two representative compounds 2 and 5 possess higher decomposition temperature (2: 196 °C and 5: 178 °C) and overall detonation properties (2: D = 8129 m s–1 and P = 26.6 GPa and 5: D = 8336 m s–1 and P = 27.3 GPa) as well as relativity lower sensitivities (2: IS = 12 J and FS = 240 N and 5: IS = 10 J and FS = 144 N) than that of primary explosive 2-diazo-4,6-dinitrophenol (T d = 157 °C, D = 6900 m s–1, P = 24.7 GPa, IS = 1 J, and FS = 24.7 N). Moreover, the initiation capacity of compounds 2 and 5 was also assessed through the initiation tests. The results indicate that the two compounds could be a promising environmentally friendly primary explosive.