title: Formation of a room temperature stable Fe(V)(O) complex: reactivity toward unactivated C-H bonds.
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.
authors.affiliation: Chemical Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India.
authors.forename: Munmun
authors.initials: M
authors.lastname: Ghosh
authors.forename: Kundan K
authors.initials: KK
authors.lastname: Singh
authors.forename: Chakadola
authors.initials: C
authors.lastname: Panda
authors.forename: Andrew
authors.initials: A
authors.lastname: Weitz
authors.forename: Michael P
authors.initials: MP
authors.lastname: Hendrich
authors.forename: Terrence J
authors.initials: TJ
authors.lastname: Collins
authors.forename: Basab B
authors.initials: BB
authors.lastname: Dhar
authors.forename: Sayam
authors.initials: S
authors.lastname: Sen Gupta
mesh_terms: D058085:Iron Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D010100:Oxygen / Q000737:chemistry*; D013696:Temperature
chemical_list: D058085:Iron Compounds; D010100:Oxygen