Synthesis of gold(I)-trifluoromethyl complexes and their role in generating spectroscopic evidence for a gold(I)-difluorocarbene species

Sofie M. P. Vanden Broeck, David J. Nelson, Alba Collado, Laura Falivene, Luigi Cavallo, David B. Cordes, Alexandra M. Z. Slawin, Kristof van Hecke, Fady Nahra, Catherine S. J. Cazin, Steven P. Nolan

Research output: Contribution to journalArticlepeer-review

Abstract

Readily-prepared and bench-stable [Au(CF3)(NHC)] compounds were synthesized using new methodologies, starting from [Au(OH)(NHC)], [Au(Cl)(NHC)] or [Au(L)(NHC)]HF2 precursors (NHC = N-heterocyclic carbene). The mechanism of formation of these species was investigated. Consequently, a new and straightforward strategy for the mild and selective cleavage of a single carbon-fluorine bond from [Au(CF3)(NHC)] complexes was attempted and found to be reversible in the presence of an additional nucleophilic fluoride source. This straightforward technique has led to the unprecedented spectroscopic observation of a gold(I)-NHC difluorocarbene species.
Original languageEnglish
Number of pages7
JournalChemistry - A European Journal
Early online date6 Apr 2021
DOIs
Publication statusE-pub ahead of print - 6 Apr 2021

Keywords

  • difluorocarbene
  • trifluoromethyl
  • N-heterocyclic carbene
  • gold(I)
  • fluoride abstraction

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