Synthesis, Structure and Stability of New PtII-Bis(N-Heterocyclic Carbene) Complexes

The use of metal acetates has allowed the synthesis of NHC complexes without isolation of the free carbene. This route is very useful in cases where the metal acetates are readily available and has been used, for example, for the synthesis of bis(N‐heterocyclic carbene) complexes of palladium(II). I...

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Bibliographic Details
Published in:European Journal of Inorganic Chemistry 2006, Vol.2006 (6), p.1268-1274
Main Authors: Ahrens, Sebastian, Herdtweck, Eberhardt, Goutal, Sigrid, Strassner, Thomas
Format: Review
Language:eng ; jpn
Subjects:
Carbene ligands
Ligand design
NMR spectroscopy
Platinum
Solid state structure
Synthesis
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Summary:The use of metal acetates has allowed the synthesis of NHC complexes without isolation of the free carbene. This route is very useful in cases where the metal acetates are readily available and has been used, for example, for the synthesis of bis(N‐heterocyclic carbene) complexes of palladium(II). In the case of platinum, however, the corresponding acetate is not commercially available and is difficult to synthesize. Previously published syntheses require either an external base (e.g. NaOAc or KOtBu) or a transmetalation step. Here we present a new general synthetic pathway for platinum–bis(carbene) complexes using platinum(II) acetylacetonate as a commercially available metal precursor. Aromatic substituents greatly enhance the stability of the metal complexes against acidic media. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.200500888