5,5'-hydrazinebistetrazole: An oxidation-stable nitrogen-rich compound and starting material for the synthesis of 5,5'-azobistetrazolates

作者：Klapoetke Thomas M; Sabate Carles Miro

来源：Zeitschrift fur Anorganische und Allgemeine Chemie, 2007, 633(15): 2671-2677.

DOI：10.1002/zaac.200700271

• 5,5'-Hydrazinebistetrazoles
• 5,5'-Azobistetrazolates
• Energetic materials
• Nitrogen-rich compounds

5,5'-hydrazinebistetrazoles reported in the literature are sensitive to oxidation and react with atmospheric oxygen to yield the corresponding 5,5'-azobistetrazolates on time. Herewith, we report on the synthesis of the free acid 5,5'-hydrazinebistetrazole (HBT) which showed to be stable on air for extended periods of time. The compound was fully characterized by analytical and spectroscopic methods and its X-ray structure was determined by diffraction techniques. Besides, we determined its explosive properties by BAM methods and calculated its heat of formation (+414 kJ mol(-1)), detonation velocity (8523 m s(-1)) and detonation pressure (27.7 GPa). HBT proved to be very safe to handle (impact sensitivity: > 30 J, friction sensitivity: similar to 108 N) and was used as a starting material for the synthesis of some already reported 5,5'-azobistetrazolates: NH4+, NH2NH3+, Li+, Na+, K+, Rb+, Cs+, Mg2+, Ca2+, Sr2+ and Ba2+.

• 出版日期2007