Structural and kinetic regularities of thermal decomposition of gem-trinitromethylazoles in the liquid phase
Tóm tắt
Kinetics of liquid-phase thermal decomposition of a series of triazoles and tetrazoles containing a gem-trinitromethyl group were studied by manometry and photoelectrocolorimetry, and the mechanism of the thermal decomposition was established. The activation parameters of the rate-limiting stage of the process were evaluated. It was shown that the thermal stability of the gem-trinitromethyl group varies over a broad range, depending on the steric effect of the azole. The rate constant and activation energy correlate with the steric effect of the azole. The thermal decomposition of β-trinitroethylaminotetrazoles proceeds heterolytically with initial dissociation of the C-C bond to give a carbocation and the nitroform anion.
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