The Dynamical Study of the Reactions Ba+C₆H₅CH₂Cl, C₆H₅Cl, o, m, p-C₆H₄ClCH₃

The LIF spectra of BaCl produced under single collision conditions from the reactions Ba+C₆H₅CH₂Cl, C₆H₅Cl, o,m,p-C₆H₄ClCH₃ have been obtained, and the relative reactive cross sections of these reactions have been measured. The results show that the reactive cross sections of the reactions Ba+o,m,p-C₆H₄ClCH₃ are nearly equal if no rearrangement occured in the reaction Ba+C₆H₄ClCH₃. It has been found that the presence of the radical may reduce the reactivity of the chlorine. A simple statistical model is used for explaination of these results, and a new reactive mechanism is suggested.