Synthesis, Crystal Structure and Properties of a Novel Energetic Material Dirubidium 5, 5'-Bis~tetrazole-l-oxide)

A new energetic material dirubidium 5,5'-bis ( tetrazole-1 -oxide) (BTORb) was synthesized by using I H, 1 ' H-5,5 '- bistetrazole-1 ,1 '-diolate (BTO) as the original material. The monocrystal of target salt was first cultivated by the method of gradu- al evaporation, and the single crystal structure was menstruated by single X-ray diffraction. It is found that the Rb+ and BTO2- formed a dissymmetrical structure. In different layers, they are alternately arranged and connected with each other, forming a three-dimensional reticular structure. Its thermal decomposition behavior was investigated through DSC and TG-DTG technologies, indicating a good thermal stability with a decomposition temperature beginning at 292℃. Its kinetic parameters of non-isothermal reaction was calculated by Kissinger and Ozawa methods with the equation of Arrhenius is Ink–13.51 -1 86.3×10^3/RT. Its standard heat of formation was calculated with the result of 274.91 kJ·mol^-1. Its critical temperature of thermal explosion Tb is 356.7℃, indicating that the salt has a good thermal stability. The impact sensitivity (H50) of BTORb is 34.8 cm, with the drop hammer of 800 g. The friction sensitivity is 36%, under the condition of 70°, 1. 23 MPa. The 50% fire energy of electrostatic spark sensitivity is 0.34 J.