Ch_322a_10.03

Ch_322a_10.03 - and radical species. It is suggested that...

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Homolytic Bond Dissociation and the Relative Stability of Radicals Such comparisons of the homolytic C-H bond dissociations energies in a series of alkanes leads to a stability order for alkyl radicals: R-C R R . stability order > R-C R H . R-C H H . H-C H H . > > tertiary secondary primary methyl
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An Explanation of the Stability Order of Alkyl Radicals The stability order of alkyl radicals parallels the stability order of carbocations. Alkyl substitution stabilizes both carbocations
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Unformatted text preview: and radical species. It is suggested that hyperconjugation (sigma-p orbital overlap) is important in stabilizing alkyl radicals as it is in carbocations. C C H C C H + . carbocation alkyl radical sigma-p orbital overlap represented in resonance structures as H-C C H H + H-C=C H + H-C C H H H-C=C H . . stabilization of carbocation stabilization of alkyl radical...
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Ch_322a_10.03 - and radical species. It is suggested that...

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