The Role of Solvation in the Kinetics and the Mechanism of Hydroperoxide Radicals Addition to π‐Bonds of 1,2‐Diphenylethylene and 1,4‐Diphenylbutadiene‐1,3
Abstract:A combination of microcalorimetry, the rotating sector method, and ESR at 323 K in the environment of 10 solvents of different polarities was used to measure rate constants of addition of hydroperoxide radicals (HO • 2 ) to π bonds of trans-1,2-diphenylethylene and trans,trans-1,4-diphenylbutadiene-1,3 (k 2 ) and disproportionation rate constants of these radicals (k 3 ). With increasing dielectric constant of the medium, k 2 values increase from 69 to 410 M −1 · s −1 , and k 3 values almost do not change and … Show more
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