Open AccessADDITION OF METHYL RADICALS TO UNSATURATED HYDROCARBONS
Author(s) -
L. Mandelcorn,
E. W. R. Steacie
Publication year - 1954
Publication title -
canadian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.323
H-Index - 68
eISSN - 1480-3291
pISSN - 0008-4042
DOI - 10.1139/v54-060
Subject(s) - chemistry , radical , acetylene , acetone , methyl radical , photochemistry , photodissociation , steric effects , ethylene , kinetics , methyl vinyl ketone , medicinal chemistry , organic chemistry , catalysis , physics , quantum mechanics
The rates of addition of methyl radicals, produced by the photolysis of acetone between 140 °C. and 240 °C, to unsaturated hydrocarbons were determined by two independent methods. From the kinetics of the addition and the methyl radical combination reactions, addition of methyl radicals to ethylene, propylene, acetylene, and butadiene was found to proceed with activation energies of 7.0, 6.0, 5.5, and ∼2.5 kcal. respectively and steric factors of the order of 10 −4 .
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