Synthesis and characterization of gold(III) complexes bearing a picoline-functionalized N-heterocyclic carbene
- Author(s)
- Christoph Topf, Christa Hirtenlehner, Michel Fleck, Manuela List, Uwe Monkowius
- Abstract
3-Methyl-1-(2-picolyl)-imidazolium chloride (1) has been synthesized and used as a precursor for the preparation of the (NHC)AgCl complex [NHC = 3-methyl-1-(2-picolyl)imidazol-2-ylidene] (2). Transmetalation of 2 with (tht)AuBr (tht = tetrahydrothiophene) yields the corresponding (NHC)AuBr complex 3, which is further oxidized by Br2 to give the (NHC)AuBr3 compound 4. Treatment of 4 with one equivalent of solid AgBF4 affords the [(NHC)AuBr2][BF4] congener 5 as a pale green, crystalline powder. The structure of 4 and 5 were determined by single-crystal X-ray diffraction, revealing for 5 a ?-N-coordination of the AuIII atom by the picolyl nitrogen atom. Further attempts to exchange all bromides by carboxylates results in the reduction to the dimeric AuI compound [(NHC)2Au2][BF4]2, 6.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- Johannes Kepler Universität Linz
- Journal
- Zeitschrift für Anorganische und Allgemeine Chemie
- Volume
- 637
- Pages
- 2129-2134
- No. of pages
- 6
- ISSN
- 0044-2313
- Publication date
- 2011
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105113 Crystallography
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/98d3a294-b46c-442c-a9e1-b68c8e3a4832