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Bis-NHC chelate complexes of nickel(0) and platinum(0)

For a long time d10-ML2 fragments have been known for their potential to activate unreactive bonds by oxidative addition. In the development of more active species, two approaches have proven successful: the use of strong σ-donating ligands leading to electron-rich metal centers and the employment o...

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Bibliographic Details
Main Authors: Brendel, Matthias (Author) , Braun, Carolin (Author) , Rominger, Frank (Author) , Hofmann, Peter (Author)
Format: Article (Journal) Editorial
Language:English
Published: May 21, 2014
In: Angewandte Chemie. International edition
Year: 2014, Volume: 53, Issue: 33, Pages: 8741-8745
ISSN:1521-3773
DOI:10.1002/anie.201401024
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1002/anie.201401024
Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201401024
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Author Notes:Matthias Brendel, Carolin Braun, Frank Rominger, and Peter Hofmann
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Summary:For a long time d10-ML2 fragments have been known for their potential to activate unreactive bonds by oxidative addition. In the development of more active species, two approaches have proven successful: the use of strong σ-donating ligands leading to electron-rich metal centers and the employment of chelating ligands resulting in a bent coordination geometry. Combining these two strategies, we synthesized bis-NHC chelate complexes of nickel(0) and platinum(0). Bis(1,5-cyclooctadiene)nickel(0) and -platinum(0) react with bisimidazolium salts, deprotonated in situ at room temperature, to yield tetrahedral or trigonal-planar bis-NHC chelate olefin complexes. The synthesis and characterization of these complexes as well as a first example of CC bond activation with these systems are reported. Due to the enforced cis arrangement of two NHCs, these compounds should open interesting perspectives for bond-activation chemistry and catalysis.
Item Description:This work was funded by the Deutsche Forschungsgemeinschaft(SFB 623 “Molecular Catalysts: Structure and Functional Design”).P.H. works at CaRLa of Heidelberg University, which is cofinancedby the University of Heidelberg, the State of Baden-Wuerttemberg,and BASF SE. We gratefully acknowledge generous support fromthese institutions. NHC=N-heterocyclic carbene
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Physical Description:Online Resource
ISSN:1521-3773
DOI:10.1002/anie.201401024

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