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Nickel(II), Palladium(II) and Rhodium(I) Complexes of New NHC-Thioether Ligands: Efficient Ketone Hydrosilylation Catalysis by a Cationic Rh Complex

  1. Joffrey Wolf,
  2. Agnès Labande,
  3. Jean-Claude Daran,
  4. Rinaldo Poli

Article first published online: 20 SEP 2007

DOI: 10.1002/ejic.200700670

Issue

European Journal of Inorganic Chemistry

European Journal of Inorganic Chemistry

Volume 2007, Issue 32, pages 5069–5079, November 2007

Additional Information

How to Cite

Wolf, J., Labande, A., Daran, J.-C. and Poli, R. (2007), Nickel(II), Palladium(II) and Rhodium(I) Complexes of New NHC-Thioether Ligands: Efficient Ketone Hydrosilylation Catalysis by a Cationic Rh Complex. European Journal of Inorganic Chemistry, 2007: 5069–5079. doi: 10.1002/ejic.200700670

Author Information

  1. Laboratoire de Chimie de Coordination, UPR CNRS 8241 (lié par convention à l'Université Paul Sabatier et à l'Institut National Polytechnique de Toulouse), 205 route de Narbonne, 31077 Toulouse Cedex 4, France, Fax: +33-561553003

Publication History

  1. Issue published online: 26 OCT 2007
  2. Article first published online: 20 SEP 2007
  3. Manuscript Received: 28 JUN 2007

Funded by

  • Centre National de la Recherche Scientifique (C.N.R.S.)
  • Fonds Social Européen (F.S.E.)

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Keywords:

  • N-Heterocyclic carbenes;
  • S ligands;
  • Nickel;
  • Palladium;
  • Rhodium

Graphical Abstract

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Abstract

Five new, bifunctional imidazolium–thioether ligands of the general formula RS(CH2)n(imidazolium)+ArBr– (n = 2 or 3, R = Et or tBu, Ar = 2,4,6-trimethylphenyl or 2,6-diisopropylphenyl) have been synthesised in good overall yields by a general method and used as N-heterocyclic carbene precursors for complexation studies on various transition metals (NiII, PdII and RhI). Sulfur does not coordinate the nickel centre, whereas the two functional groups bind the palladium centre to form a dinuclear compound. Cationic rhodium(I) complexes have also been prepared and preliminary catalytic tests show that they have good activity for the hydrosilylation of ketones. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

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