Studies on Radiation Chemistry of Halogenophenols in Aqueous Solutions

Among the γ-radiolysis products of p-bromophenol in an aqueous solution, four new oligomers were obtained. By chemical and physical techniques their structures were elucidated as ortho-, meta- and para-terphenyl in which C-4, C-2′ and C-4″ are substituted by hydroxyl groups and C-5′ by a bromine atom and as 5-bromo-2,4′,4″-trihydroxy-m-terphenyl, respectively. These oligomers may be formed by the arylation of p-bromophenol or the dimeric product with an aryl radical intermediate resulted from debromination of p-bromophenol by some radiolysis product(s) of water.