CF3Cl has been dissociated using the focused output of a CO2TEA laser operating on theR(40) line of the 9.6 mgr;m band. IR fluorescence has been observed for HF and HCl after irradiating mixtures of CF3Cl, HBr, and Ar, indicating the production of F as well as Cl. In addition, the laserhyphen;induced fluorescence spectrum of CF2has been observed using a KrF laser (249 nm) to excite the CF2thinsp;Atilde;1B1larr;Xtilde;1A1transition. A two step dissociation mechanism in which CF3and Cl are the primary products followed by the subsequent multiphoton absorption and dissociation of CF3to produce CF2and F is proposed. Evidence for secondary dissociation of CF3has been demonstrated by observing CF2in the infrared multiphoton dissociation of C2F6, which is known to produce CF3at low fluence. Further evidence in support of a twohyphen;step dissociation mechanism is given by analysis of stable products, fluence studies, and RRKM calculations.
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