Kinetics of radical decomposition of di(tert-butyl) trioxide

The kinetics of radical decomposition of di(tert-butyl) trioxide was studie d by spectrophotometry from the consumption of an acceptor of free radicals , 2,6-di(tert-butyl)-4-methylphenol, in CFCl3 and CH2Cl2 tin the latter cas e, in the presence of 0.1 M (BuOOH)-O-t). The activation parameters of the reaction (log(A/s(-1)) = 14.8+/-1.2 and 14.1+/-1.6, E-a = 21.6+/-1.4 and 20 .1+/-1.9 kcal mol(-1) in CFCl3 and CH2Cl2, respectively) and the probabilit y of radical escape to the bulk (e = 0.9+/-0.1) were determined. The known experimental and calculated values of the O-OO bond strength in trioxides w ere analyzed.