Dioxygen Reactivity with a Ferrocene-Lewis Acid Pairing: Reduction to a Boron Peroxide in the Presence of Tris(pentafluorophenyl)borane

Ferrocenes, which are typically air‐stable outer‐sphere single‐electron transfer reagents, were found to react with dioxygen in the presence of B(C6F5)3, a Lewis acid unreactive to O2, to generate bis(borane) peroxide. Although several Group 13 peroxides have been reported, boron‐supported peroxides...

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Bibliographic Details
Published in:Angewandte Chemie 2014-11, Vol.126 (47), p.13107-13110
Main Authors: Henthorn, Justin T., Agapie, Theodor
Format: Article
Language:English
Subjects:
Anions
Boron
Chemistry
Disauerstoffreduktion
Electrochemical analysis
Ferrocen
Ferrocenes
Lewis acid
Peroxide
Peroxides
Reduction
Structural analysis
Synthesis
Tris(pentafluorphenyl)boran
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Summary:Ferrocenes, which are typically air‐stable outer‐sphere single‐electron transfer reagents, were found to react with dioxygen in the presence of B(C6F5)3, a Lewis acid unreactive to O2, to generate bis(borane) peroxide. Although several Group 13 peroxides have been reported, boron‐supported peroxides are rare, with no structurally characterized examples of the BO2B moiety. The synthesis of a bis(borane)‐supported peroxide anion and its structural and electrochemical characterization are described. Durch zwei Borane unterstütztes Peroxid wurde synthetisiert und strukturanalytisch sowie elektrochemisch charakterisiert. Ferrocene (siehe Schema; R=Me, H), unter normalen Bedingungen luftbeständige Ein‐Elektronen‐Transferreagentien nach dem Außensphärenmechanismus, reagieren mit Disauerstoff in Gegenwart von B(C6F5)3, einer üblicherweise gegenüber O2 nicht reaktiven Lewis‐Säure, unter Bildung des Bis(boran)peroxids.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201408462