Substituent effect on the rate of thermal decomposition of 5-(R-phenyl)-2-methyl-1,2,3,4-tetrazoles

Abstract

Thermal decomposition of substituted 2-methyl-5-phenyltetrazoles in solution has been studied by manometric method with chromatographic determination of the evolved nitrogen. A relation has been found between the rate of thermal decomposition and nature of the substituent in the benzene ring. Effects of solvent and temperature on thermal decomposition of substituted tetrazoles have been revealed.We have earlier shown that decomposition mechanism and thermal stability of energetic compounds based on 5-R-2-methyltetrazoles strongly depends on the nature of the R substituent [1][2][3]. Extending these studies, herein we report on thermal decomposition of compounds I-VIII aiming to reveal a quantitative relationship between the tetrazoles reactivity and nature of the substituent in the 5-phenyl ring.