Reduction of Dioxygen by Radical/B(p-C6 F4 X)3 Pairs to Give Isolable Bis(borane)superoxide Compounds

Xin Tao; Constantin G Daniliuc; Oliver Janka; Rainer Pöttgen; Robert Knitsch; Michael Ryan Hansen; Hellmut Eckert; Maximilian Lübbesmeyer; Armido Studer; Gerald Kehr; Gerhard Erker

doi:10.1002/anie.201709309

Reduction of Dioxygen by Radical/B(p-C₆ F₄ X)₃ Pairs to Give Isolable Bis(borane)superoxide Compounds

Angew Chem Int Ed Engl. 2017 Dec 22;56(52):16641-16644. doi: 10.1002/anie.201709309. Epub 2017 Dec 4.

Authors

Affiliations

¹ Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany.
² Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149, Münster, Germany.
³ Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 28, 48149, Münster, Germany.
⁴ Instituto de Fisica, Sáo Carlos, Universidade de Sáo Paulo, CP 369, 13560-970, Sáo Carlos S.P., Brazil.

PMID: 29112325
DOI: 10.1002/anie.201709309

Abstract

Triplet dioxygen was reduced by TEMPO or trityl radicals in the presence of two molar equivalents of the strong B(p-C₆ F₄ X)₃ (X: F or H) boron Lewis acids under mild conditions to give the bis(borane)superoxide systems 2. The sensitive radical anion species were isolated and characterized by methods including X-ray crystal structure analysis and EPR spectroscopy.

Keywords: boron; dioxygen; peroxide; radicals; superoxide.

Publication types

Research Support, Non-U.S. Gov't