Abstract
The light-induced addition of SF5Cl to fluoro-olefins (E) has been studied in a large series of experiments in which light intensity, temperature and relative concentrations have been varied. The reaction mechanism is the same as that established for ethylene with the following principal chain carrying steps : [graphic ommitted] and the combination of two SF5· radicals (k6) the main chain termination step. The addition to tetrafluoro-, trifluoro- and 1,1-difluoro-ethylene has been investigated and from studies on the latter two compounds the following rate expressions were obtained. [graphic ommitted] *R the gas constant taken to be 1.9872 cal deg.–1 mol–1 and subsequent energies expressed in cal mol–1(1 cal = 4.1855 J).
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