Free radical addition to olefins. Part 8.—Addition of n-heptafluoropropyl radicals to fluoro-ethylenes

Abstract

The light-induced addition of perfluoropropyl iodide to fluoro-ethylenes in the gas phase C₃F₇·+ RCHCH₂→ C₃F₇CH₂ĊHR (2) has been studied, and activation parameters determined by a competitive method. The corresponding differences found are: [graphic omitted] The most striking feature is the similarity to the results for addition of bromotrichloromethane to the same olefins. Relationships between activation energies and some theoretical quantities are discussed.