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

• Verfasst von: Brendel, Matthias [VerfasserIn]
• Verfasst von: Braun, Carolin [VerfasserIn]
• Verfasst von: Rominger, Frank [VerfasserIn]
• Verfasst von: Hofmann, Peter [VerfasserIn]
• Titel: Bis-NHC chelate complexes of nickel(0) and platinum(0)
• Verf.angabe: Matthias Brendel, Carolin Braun, Frank Rominger, and Peter Hofmann
• E-Jahr: 2014
• Jahr: May 21, 2014
• Umfang: 5 S.
• Fussnoten: 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 ; Gesehen am 14.09.2020
• Titel Quelle: Enthalten in: Angewandte Chemie / International edition
• Ort Quelle: Weinheim : Wiley-VCH, 1962
• Jahr Quelle: 2014
• Band/Heft Quelle: 53(2014), 33, Seite 8741-8745
• ISSN Quelle: 1521-3773
• DOI: doi:10.1002/anie.201401024
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: carbene ligands
• Sach-SW: chelates
• Sach-SW: nickel
• Sach-SW: platinum
• K10plus-PPN: 1731769563

Abstract

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.