Studies of ligand exchange in N-heterocyclic carbene silver(I) complexes

Haw Lih Su, Lisa M. Pérez, Sheng Jui Lee, Joseph H. Reibenspies, Hassan S. Bazzi, David E. Bergbreiter

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Abstract

A series of N-heterocyclic carbene (NHC) Ag(I) complexes have been prepared and used to study the dynamics of NHC ligand exchange in these Ag(I) complexes. These studies used solution-state variable-temperature (VT) 13C NMR spectroscopy and the temperature-dependent changes in 13C- 107/109Ag coupling to determine activation energies for the ligand exchange process. The effects of concentration, bridging anions, and additives on the exchange process have been studied. The experimental activation energies for the NHC ligand exchange processes of these silver complexes are also compared with DFT calculations. The results are consistent with an associative mechanism for the Ag(I)-NHC exchange process.

Original languageEnglish
Pages (from-to)4063-4071
Number of pages9
JournalOrganometallics
Volume31
Issue number10
DOIs
Publication statusPublished - 28 May 2012

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

Su, H. L., Pérez, L. M., Lee, S. J., Reibenspies, J. H., Bazzi, H. S., & Bergbreiter, D. E. (2012). Studies of ligand exchange in N-heterocyclic carbene silver(I) complexes. Organometallics, 31(10), 4063-4071. https://doi.org/10.1021/om300340w