Testing the Limits of Imbalanced CPET Reactivity: Mechanistic Crossover in H-Atom Abstraction by Co(III)-Oxo Complexes.

ABSTRACT: Transition metal-oxo complexes are key intermediates in a variety of oxidative transformations, notably C-H bond activation. The relative rate of C-H bond activation mediated by transition metal-oxo complexes is typically predicated on substrate bond dissociation free energy in cases with a concerted proton-electron transfer (CPET). However, recent work has demonstrated that alternative stepwise thermodynamic contributions such as acidity/basicity or redox potentials of the substrate/metal-oxo may dominate in some cases. In this context, we have found basicity-governed concerted activation of C-H bonds with the terminal Co^III-oxo complex PhB(^tBuIm)₃Co^IIIO. We have been interested in testing the limits of such basicity-dependent reactivity

SUBMITTER: Zhao N 

PROVIDER: S-EPMC10023487 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature