Vinylidene fluoride has been successfully telomerized with carbon tetrachloride and perfluoro-t-butyl iodide as telogens; various new telomerization products and new compounds derived. therefrom have been identified by NMR, IR, elemental analyses and chemical transformations. In agreement with our view that polar factors play an important part in deciding the orientation of free radical additions to vinylidene fluoride, it has been shown that the electrophilic radicals·CCl₃and (CF₃) ₃C ·add to the methylene end of the alkene.