An "End-On" chromium(III)-superoxo complex: Crystallographic and spectroscopic characterization and reactivity in C-H bond activation of hydrocarbons

Jaeheung Cho; Jaeyoung Woo; Wonwoo Nam

doi:10.1021/ja1015926

An "End-On" chromium(III)-superoxo complex: Crystallographic and spectroscopic characterization and reactivity in C-H bond activation of hydrocarbons

Jaeheung Cho, Jaeyoung Woo, Wonwoo Nam

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

103 Scopus citations

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)(O²)(Cl)]⁺, which was synthesized by reacting [Cr^II(14-TMC)(Cl)]⁺ with O². The Cr(III)-superoxo intermediate has shown reactivities in C-H cleavage of alkylaromatics via a H-atom abstraction mechanism.

Original language	English
Pages (from-to)	5958-5959
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	132
Issue number	17
DOIs	https://doi.org/10.1021/ja1015926
State	Published - 5 May 2010

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AU - Woo, Jaeyoung

AU - Nam, Wonwoo

PY - 2010/5/5

Y1 - 2010/5/5

N2 - 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, [CrIII(14-TMC)(O2)(Cl)]+, which was synthesized by reacting [CrII(14-TMC)(Cl)]+ with O2. The Cr(III)-superoxo intermediate has shown reactivities in C-H cleavage of alkylaromatics via a H-atom abstraction mechanism.

AB - 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, [CrIII(14-TMC)(O2)(Cl)]+, which was synthesized by reacting [CrII(14-TMC)(Cl)]+ with O2. The Cr(III)-superoxo intermediate has shown reactivities in C-H cleavage of alkylaromatics via a H-atom abstraction mechanism.

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IS - 17

ER -

An "End-On" chromium(III)-superoxo complex: Crystallographic and spectroscopic characterization and reactivity in C-H bond activation of hydrocarbons

Abstract

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