Bond dissociation energies for radical dimers derived from highly stabilized carbon-centered radicals |
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Authors: | Frenette Mathieu Aliaga Carolina Font-Sanchis Enrique Scaiano J C |
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Institution: | Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada. |
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Abstract: | reaction: see text] The temperature dependence of the dissociation of dimers formed from highly stabilized carbon-centered radicals has been examined. Analysis of the data yields the bond dissociation energy (BDE) for the central head-to-head C-C bond in these compounds. For example, for the dimer derived from 3-phenyl-2-coumaranone, BDE is 23.6 kcal/mol and the C-C bond length 1.596 A, a rather long value for a sigma bond. |
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