Tuning the Lewis acidity of difluorido gold(III) complexes: the synthesis of [AuClF2(SIMes)] and [AuF2(OTeF5)(SIMes)]

Mathias A. Ellwanger; Clara von Randow; Simon Steinhauer; Yunfei Zhou; Anja Wiesner; Helmut Beckers; Thomas Braun; Sebastian Riedel

doi:10.1039/C8CC05233F

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Tuning the Lewis acidity of difluorido gold(iii) complexes: the synthesis of [AuClF₂(SIMes)] and [AuF₂(OTeF₅)(SIMes)]†

Mathias A. Ellwanger,

^a Clara von Randow,^a Simon Steinhauer,

^a Yunfei Zhou,^a Anja Wiesner,

^a Helmut Beckers,^a Thomas Braun

^b and Sebastian Riedel

*^a

Author affiliations

* Corresponding authors

^a Institut für Chemie und Biochemie – Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34–36, 14195 Berlin, Germany
E-mail: s.riedel@fu-berlin.de

^b Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
E-mail: thomas.braun@cms.hu-berlin.de

Abstract

The synthesis and structural characterisation of the difluorido organo gold(III) complexes [AuClF₂(SIMes)] and [AuF₂(OTeF₅)(SIMes)] are presented. The substitution of a fluorido ligand in [AuF₃(SIMes)] by an OTeF₅ group increases the Lewis acidity of the Au moiety. A scale for carbene affinities is presented, which correlates calculated and experimental values for the Lewis acidity of the metal centre in akin compounds.

This article is part of the themed collection: Fluorine Chemistry

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Article information

DOI: https://doi.org/10.1039/C8CC05233F
Article type: Communication
Submitted: 02 Jul 2018
Accepted: 20 Jul 2018
First published: 23 Jul 2018

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Chem. Commun., 2018,54, 9301-9304

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Tuning the Lewis acidity of difluorido gold(III) complexes: the synthesis of [AuClF₂(SIMes)] and [AuF₂(OTeF₅)(SIMes)]

M. A. Ellwanger, C. von Randow, S. Steinhauer, Y. Zhou, A. Wiesner, H. Beckers, T. Braun and S. Riedel, Chem. Commun., 2018, 54, 9301 DOI: 10.1039/C8CC05233F

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