Symmetrically bridged bis-N-heterocyclic carbene rhodium (I) complexes and their catalytic application for transfer hydrogenation reaction

Nadežda B. Jokić, Mei Zhang-Presse, Serena L.M. Goh, Claudia S. Straubinger, Bettina Bechlars, Wolfgang A. Herrmann, Fritz E. Kühn

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29 Scopus citations

Abstract

Bridged rhodium(I) bis(NHC) complexes of the formula [bis-(NHC)Rh(I)PF 6] (1c-5c) were synthesized and applied as catalysts in the transfer hydrogenation of acetophenone in 2-propanol. The activity of the rhodium(I) complexes largely depends on the nature of the N-substituents and the applied bases. The synthesized compounds were characterized by elemental analysis, 1H and 13C NMR-spectroscopy and mass spectrometry. The structure of complex 2c was exemplary determined by X-ray analysis.

Original languageEnglish
Pages (from-to)3900-3905
Number of pages6
JournalJournal of Organometallic Chemistry
Volume696
Issue number24
DOIs
StatePublished - 1 Dec 2011

Keywords

  • N-Heterocyclic carbenes
  • Rhodium-NHC complexes
  • Transfer hydrogenation

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