3,6-Bis(1H-1,2,3,4-tetrazol-5-yl-amino)-1,2,4,5-tetrazine–based energetic strontium(II) complexes: synthesis, crystal structure, and thermal properties

Abstract

Two energetic strontium(II) complexes with nitrogen-rich 3,6-bis(1H-1,2,3,4-tetrazol-5-yl-amino)-1,2,4,5-tetrazine (BTATz) were synthesized. The metal complexes were characterized by IR, elemental analysis, and single-crystal X-ray diffraction. DSC and TG-DTG were used to study the thermal behavior, non-isothermal decomposition reaction kinetics, self-accelerating decomposition temperature (T _SADT), thermal ignition temperature (T _TIT), critical temperature of thermal explosion (T _b), and the adiabatic time-to-explosion (t _TIad). The data indicate competitive energetic materials.

Keywords:

• 3,6-Bis(1H-1,2,3,4-tetrazol-5-yl-amino)-1,2,4,5-tetrazine
• Crystal structure
• Strontium
• Non-isothermal kinetics
• Thermal safety

Acknowledgments

We thank the National Natural Science Foundation of China (21101127), the Natural Science Basic Research Plan in Shaanxi Province of China (2011JQ2002), China Postdoctoral Science Foundation funded project (20110491676), the National Defense Pre-Research Foundation of China (9140A28020111BQ3401) and the National Natural Science Foundation of China (21073141).