Coordinative Combination of Nitroamine and Gem-Dinitromethyl with Fused Ring for Enhanced Oxygen Balances and Detonation Properties

Oxygen balance and heat of formation are closely related to the nitrogen and oxygen content in a molecule and have a significant effect on the detonation performance of energetic materials. Here a new family of 1,2,4-triazolo [4,3-b][1,2,4,5]-tetrazine containing gem-dinitromethyl and nitroamine with high nitrogen-oxygen content was synthesized and characterized. Moreover, the structure of the guanidine salt (3) and TATOT salt (4) were confirmed by single-crystal X-ray diffraction. The nitrogen and oxygen content of ammonium salt2reached 82.5%, with a high density (1.805 g cm−3) and high detonation properties (D= 8900 m s−1;P= 32.4 GPa), which were similar to those of RDX.Keywords:nitroamine;gem-dinitromethyl;high nitrogen-oxygen content;triazolo-tetrazine fused ring