D. VanSickle, H. E. Redeker
Feb 1, 1964
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Journal
Radiation research
Abstract
Three dihydroxydiphenylmethanes and three related phenolic compounds have been subjected to 1-Mev electron bombardment in the solid state at bulk temperatures of -30 deg C and -70 deg C. The principal product in all cases is a material polymer of higher molecular weight than that of the starting reactant. G (polymer) values range from 0.5 to 0.8 for all except saligenin, which is 2.7. For 2,2'dihydroxydiphenylmethane the polymer contains from two to three reactant residues. In addition to the polymer, gas, which is about 90% hydrogen, is produced with G values ranging from 0.06 to 0.27. The dimethyl ether of 2,2'dihydroxydiphenylmethane is exceptional in that more methane is formed than hydrogen. Finally, products representing fragmentation of the original molecule are produced in small yields. The total yield of fragmentation products is of the order of G (volatiles) = 0.2. The formation of products may be visualized as proceeding through an excited reactant molecule which may eliminate hydrogen gas either concentedly or sequentially to give an unstable qulnone methide. Hydrogen atoms from stepwise dissociation of the reactant are expected to be captured by a reactant molecule to give a precursor of the stable fragmentation products observed. (auth)