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. 2017 Sep 14;53(74):10306-10309.
doi: 10.1039/c7cc05014c.

Reactivity of a stable copper-dioxygen complex

Diana A Iovan  1 , Alexandra T Wrobel, Arthur A McClelland, Austin B Scharf, Guy A Edouard, Theodore A Betley
Affiliations

Reactivity of a stable copper-dioxygen complex

Diana A Iovan et al. Chem Commun (Camb). .

Abstract

We report the isolation of a room temperature stable dipyrromethene Cu(O2) complex featuring a side-on O2 coordination. Reactivity studies highlight the unique ability of the dioxygen adduct for both hydrogen-atom abstraction and acid/base chemistry towards phenols, demonstrating that side-on superoxide species can be reactive entities.

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Figures

Fig. 1
Fig. 1
Solid state molecular structures for (a) (ArL)Cu (1) and (b) (ArL)Cu(O2) (2) with thermal ellipsoids at 50% probability level. Color scheme: Cu, aquamarine; N, blue; O, red. Hydrogens and solvent molecules are omitted for clarity.
Scheme 1
Scheme 1
Reactions leading to formation of complex 3.
Scheme 2
Scheme 2
Reactivity of (ArL)Cu(O2) (2).
Scheme 3
Scheme 3
Proposed equilibrium between side-on / end-on O2 bound in 2 and subsequent reaction with DMPO.
See this image and copyright information in PMC

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