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Features of thermal decomposition of N-substituted tetrazolesстатья
- Авторы: Sinditskii Valery P., Hoang Trung H., Smirnova Anastasia D., Vatsadze Irina A., Dalinger Igor L., Sheremetev Alexei B.
- Сборник: Proc. 21st Seminar of the New Trends in Research of Energetic Materials
- Том: 2
- Год издания: 2018
- Место издания: University of Pardubice Pardubice, Czech Republic
- Первая страница: 997
- Последняя страница: 1013
- Аннотация: In recent years, the concept of creating molecules that are a combination of several heterocycles is widely used. This approach allows obtaining compounds with new properties that expand the field of their application. Many tetrazole derivatives have high combustion rates. The introduction of the tetrazole fragment into the composition of the nitropyrazoles led to the synthesis of new fast-burning compounds. Investigation of the thermal stability of new pyrazolyltetrazoles showed that the decomposition of molecules begins with the decomposition of the tetrazole fragment, and the stability of the substances decreases with increasing electronegativity of the pyrazole substituent. It is suggested that the decomposition of N-substituted tetrazoles begins with the elimination of the nitrogen molecule directly from the tetrazole ring. In contrast, C-substituted tetrazoles undergo preliminary tetrazole-azidoimine isomerization. The flame structure of new pyrazolyltetrazoles was studied with the help of thin microthermocouples. It turned out that the decomposition reaction in the condensed phase controls the burning rate of these compounds. Dependences of surface (boiling) temperature on pressure are obtained.
- Добавил в систему: Синдицкий Валерий Петрович