title: Direct kinetic studies of atom transfer and electron transfer reactions of hydroperoxo and high-valent oxo complexes of chromium.
abstract: A macrocyclic hydroperoxo chromium complex reacts with triphenyl phosphine in an acid-catalyzed oxygen-atom transfer reaction, k = 850 M-2 s-1. In a competing process, the hydroperoxo complex is converted to a dioxo chromium(V) species, which reacts with PPh3 by electron transfer, k = 4.4 x 105 M-1 s-1.
authors.affiliation: Department of Chemistry, Iowa State University, 29 Spedding Hall, Ames, IA 50011, USA.
authors.forename: Oleg
authors.initials: O
authors.lastname: Pestovsky
authors.forename: Andreja
authors.initials: A
authors.lastname: Bakac
mesh_terms: D040761:Biomimetic Materials / Q000737:chemistry; D002857:Chromium / Q000737:chemistry*; D003577:Cytochrome P-450 Enzyme System / Q000737:chemistry / Q000378:metabolism; D007700:Kinetics; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction
chemical_list: D009942:Organometallic Compounds; D002857:Chromium; D003577:Cytochrome P-450 Enzyme System