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Kinetics of formation and reactions of radicals in radio-frequency pulsed discharges in CCl4/NH3 mixtures

Studies of time-resolved absorption spectra of transient species in RF pulsed discharges through CCl4/NH3 mixtures showed that CCl and NH radicals were formed by decomposition of the reagent molecules, and CN in the reaction CCl+NH to CN+HCl, which has been identified for the first time. Radicals were removed in combination steps that were effectively second order under experimental conditions. The proposed mechanism was tested by computer modelling of observed radical concentration-time profiles. For several steps the best values of reaction rate constants were consistent with previous measurements and k7 was found to be 4.6+or-1.3*109 mol-1 dm3 s-1.