title: An "end-on" chromium(III)-superoxo complex: crystallographic and spectroscopic characterization and reactivity in C-H bond activation of hydrocarbons.
abstract: Metal-superoxo intermediates have been invoked as reactive species in C-H bond cleavage of substrates by oxygenase enzymes. In this work, we have shown the first structurally characterized end-on chromium(III)-superoxo complex, [Cr(III)(14-TMC)(O(2))(Cl)](+), which was synthesized by reacting [Cr(II)(14-TMC)(Cl)](+) with O(2). The Cr(III)-superoxo intermediate has shown reactivities in C-H cleavage of alkylaromatics via a H-atom abstraction mechanism.
authors.affiliation: Department of Bioinspired Science, Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.
authors.forename: Jaeheung
authors.initials: J
authors.lastname: Cho
authors.forename: Jaeyoung
authors.initials: J
authors.lastname: Woo
authors.forename: Wonwoo
authors.initials: W
authors.lastname: Nam
mesh_terms: D002244:Carbon / Q000737:chemistry; D002857:Chromium / Q000737:chemistry*; D003461:Crystallography; D006859:Hydrogen / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010105:Oxygenases / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D002857:Chromium; D002244:Carbon; D006859:Hydrogen; D010105:Oxygenases; D010100:Oxygen