Abstract
Single-electron oxidation of the Ru(II) complexes TpRu(L)(L‘)(R) (L = CO, L‘ = NCMe, and R = CH3 or CH2CH2Ph; L = L‘ = PMe3 and R = CH3) with AgOTf leads to alkyl elimination reactions that produce TpRu(L)(L‘)(OTf) and organic products that likely result from Ru−Calkyl bond homolysis. Density functional calculations on TpRu(CO)(NCMe)(Me) and its Ru(III) cation indicate that the Ru−CH3 homolytic bond dissociation enthalpy is substantially reduced (48.6 to 23.2 kcal/mol) upon oxidation.
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