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- W1999311576 abstract "We report upon the direct detection of difluorocarbene following infrared multiphoton photolysis of pentafluoroethyl iodide using well-defined (SLM, TEM00, 80 ns pulse width) TEA CO2-laser pulses. The rate of appearance of CF2 at 1 mTorr pressure and RRKM modelling of the unimolecular dissociation of C2F3I and C2F5 using reasonable input parameters are presented. These support a mechanism whereby CF2 is produced by secondary photolysis of pentafluoroethyl radicals. Measurements of the velocity of CF2 by the transient diffusion technique lead to an estimate of 2.6 kcal/mol for its average translational energy acquired from the homolytic cleavage of the CI and CC bonds. This value is higher than that predicted from the models using reasonable spontaneous dissociation rates ( = 109 s−1). An inherent assumption of the models is that the excess energy of dissociation is distributed statistically among the vibrational modes of the reaction complex and that there are no small barriers in the exit channel." @default.
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- W1999311576 date "1983-06-01" @default.
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- W1999311576 title "The nascent translational energy of difluorocarbene produced in IR MPD of the pentafluoroethyl radical" @default.
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- W1999311576 doi "https://doi.org/10.1016/0301-0104(83)85090-3" @default.
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