Dinuclear palladium complexes of pyrazolato-bridged imidazolium- and NHC-ligands: Synthesis and characterization

Stefan A. Reindl, Alexander Pöthig, Benjamin Hofmann, Wolfgang A. Herrmann, Fritz E. Kühn

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The reactions of dinuclear palladium precursors with the pyrazolato-bridged bis(imidazolium) salt 3,5-bis(methylimidazolium-1-ylmethyl]-1H-pyrazole bis(hexafluorophosphate) at different conditions are investigated to further explore the scope of this ligand class towards multinuclear complexes. Depending on the reaction conditions, in dichloromethane a dinuclear twofold μ-pyrazolato bridged bis(imidazolium) complex has been selectively synthesized, whereas the corresponding double μ-pyrazolato bridged bis(NHC) complex was obtained when using acetonitrile as solvent. Both complexes were characterized by NMR, elemental analysis and single crystal X-ray diffraction.

Original languageEnglish
Pages (from-to)130-136
Number of pages7
JournalJournal of Organometallic Chemistry
Early online date13 Apr 2014
Publication statusPublished - 1 Jan 2015


  • Dinuclear
  • Imidazolium
  • NHC
  • Pd complexes
  • Pyrazolato-bridged

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