Formation of a Room Temperature Stable FeV(O) Complex: Reactivity Toward Unactivated C–H Bonds
Journal of the American Chemical Society2014Vol. 136(27), pp. 9524–9527
Citations Over TimeTop 10% of 2014 papers
Munmun Ghosh, Kundan K. Singh, Chakadola Panda, Andrew C. Weitz, Michael P. Hendrich, Terrence J. Collins, Basab Bijayi Dhar, Sayam Sen Gupta
Abstract
An Fe(V)(O) complex has been synthesized from equimolar solutions of (Et4N)2[Fe(III)(Cl)(biuret-amide)] and mCPBA in CH3CN at room temperature. The Fe(V)(O) complex has been characterized by UV-vis, EPR, Mössbauer, and HRMS and shown to be capable of oxidizing a series of alkanes having C-H bond dissociation energies ranging from 99.3 kcal mol(-1) (cyclohexane) to 84.5 kcal mol(-1) (cumene). Linearity in the Bell-Evans-Polayni graph and the finding of a large kinetic isotope effect suggest that hydrogen abstraction is engaged the rate-determining step.
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