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Isotope and temperature effects on the lifetime of excited diphenyl ketyl radicals

โœ Scribed by Linda J. Johnston; D.J. Lougnot; J.C. Scaiano

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
470 KB
Volume
129
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

The lifetime of excited diphenyl ketyl radicals is lengthened by deuterium substitution. The largest effect is obyrved by substitution at the hydroxyllc positioni for example, the lifetimes are 3.9, 4.2, 8.7 and 10.5 ns for (C6H5)2COH, (C&)#OH, (C6Hs)2COD and (C&)2COD, respectively, in toluene or toluene-da at room temperature. Deuterium substitution in the solvent has no effect other than providing a different atom for the hydroxylic position in the ketyl radical.

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