Abstract

The kinetics of the reactions of CH 2 I, CH 2 Br, CH 2 Cl, and CHCl 2 with HI were studied in a tubular reactor coupled to a photoionization mass spectrometer. Rate constants were measured as a function of temperature (typically between 294 and 552 K) to determine Arrhenius parameters. For these and other R+HI reactions studied to date (i.e., those involving alkyl radicals), a linear free energy relationship was discovered which correlates the large differences in reactivity among all these R+HI reactions with the inductive effect of the substituent atoms or groups on the central carbon atom

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