Abstract:
The temperature dependence of the rate constant of the inversion substitution reactions CH3X+O2 → CH3O2•+X• (X=SH, NO2), can be expressed as k=6.8×10–12(T/1000)1.49exp(–62816 cal mol–1/RT) cm3 s–1 (X=SH) and k=6.8×10–12(T/1000)1.26××exp(–61319 cal mol–1/RT) cm3 s–1 (X=NO2), as found with the use of high-level quantum chemical methods and the transition state theory.
Keywords:inversion substitution reactions, molecular oxygen, ab initio calculations, transition state theory, rate constant.