[Pd(NHC)(allyl)Cl] complexes: Synthesis and determination of the NHC percent buried volume (%Vbur) steric parameter

Hervé Clavier*, Andrea Correa, Luigi Cavallo, Eduardo C. Escudero-Adán, Jordi Benet-Buchholz, Alexandra M.Z. Slawin, Steven P. Nolan

*Corresponding author for this work

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Complexes of palladium bearing NHC ligands (NHC=N-het-erocyclic carbene) were synthesized and fully characterized. The [Pd(NHC)(allyl)Cl] series was obtained by simple cleav-age of [Pd(allyl)Cl] 2 by using either the isolated free NHC orthe in situ generated NHC. The NHC ligand sterics were var-ied by introduction of groups attached to the C4-C5 carbonatoms of the NHC backbone. Results of the X-ray diffraction study permitted determination of the NHC steric parameterswithin this series. It was observed that the NHC backboneinduces variations in its percent buried volume (%Vbur)asafunction of the N-substituents.

Original languageEnglish (US)
Pages (from-to)1767-1773
Number of pages7
JournalEuropean Journal of Inorganic Chemistry
Issue number13 SPEC. ISS.
StatePublished - May 1 2009


  • Carbenes
  • Ligand effects
  • Palladium
  • Steric hindrance

ASJC Scopus subject areas

  • Inorganic Chemistry

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