Thermal Transformations of a Molecular Complex of [1,2,5]Oxadiazolo[3,4-e][1,2,3,4]tetrazine-4,6-di-N-oxide with 2,4-Dinitro-2,4-diazopentane

摘要

Differential scanning calorimetry and infrared spectroscopy are used to study the transformations of a stoichiometric (1: 1) crystalline molecular complex (MC) of [1,2,5]oxadiazolo[3,4-e][1,2,3,4] tetrazine-4,6-di-N-oxide with 2,4-dinitro-2,4-diazapentane in various temperature regimes. The temperature dependence of the effective rate constant for the thermal decomposition of MC is described by the Arrhenius equation with effective values of the activation energy and preexponential factor of (130.7 +/- 3.5) kJ/mol and 10(8.80) (+/-) (0.41) s(-1), respectively. The formation of a liquid molecular complex during the spontaneous cooling of MC is proven.