In previous studies,'it was found that the generation of stoichiometric quantities of free radicals (R.) in the presence of butadiene (M) gave rise to products containing two radicals combined with two molecules of butadiene] ie., RMMR. Characterization of these products, called “additive dimers,” proved valuable in identifving free radicals generated in reaction systems. We have now examined additive dimerizations employing thiols as free radical ...
