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Stabilization of Lewis Acidic AuF 3 as an N‐Heterocyclic Carbene Complex: Preparation and Characterization of [AuF 3 (SIMes)]
Author(s) -
Ellwanger Mathias A.,
Steinhauer Simon,
Golz Paul,
Braun Thomas,
Riedel Sebastian
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201802952
Subject(s) - carbene , oxidizing agent , chemistry , ligand (biochemistry) , salt (chemistry) , decomposition , lewis acids and bases , nuclear magnetic resonance spectroscopy , medicinal chemistry , solvent , catalysis , polymer chemistry , organic chemistry , biochemistry , receptor
Two different reaction routes are described to access the unprecedented trifluoridoorganogold(III) complex [AuF 3 (SIMes)]. The compound bears the N‐heterocyclic carbene SIMes (1,3‐bis(2,4,6‐trimethylphenyl)‐4,5‐dihydroimidazol‐2‐ylidene) as a ligand for a molecular Lewis acidic AuF 3 unit and was characterized by NMR spectroscopy as well as X‐ray crystallography. Apart from the use of a [AuF 4 ] − salt as precursor, the strong oxidizing compound AuF 3 can be employed neat as starting material. The reaction proceeded even in organic solvents in the presence of SIMes as the ligand precursor. Decomposition reactions with the solvent can, therefore, be prevented by using this strategy.