Structure of radicals produced by γ-radiolysis. Part 5. Radicals derived from some aliphatic alkene molecules

Abstract

Adamantane isolation matrices have been used to determine the structure of radicals produced by room temperature γ-radiolysis of certain selected alkene systems. The molecules studied include linear 1-ene homologues, linear 2-ene homologues, 2-methylpropene (2MPr), 2-methylbutene-1 (2MB1), 3-methylbutene-1 (3MB1), 2-methylbutene-2 (2MB2), 2-methylpentene-1 (2MP1), 2-methylpentene-2 (2MP2), 4-methylpentene-2 (4MP2), 2,3-dimethylbutene-2 (DMB2), 3,3-dimethylbutene-1 (33DMB), and 2,4,4-trimethylpentene-1 (TMPE). The general mode of reaction is allylic radical formation, with one isomer predominating, and structures have been either confirmed or assigned for the radicals derived from butene-1, butene-2, 2MPr, 2MB1, 2MB2, 2MP1, 4MP2, DMB2, and a listing of hfsc values have been obtained for each radical studied.