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Transition metal complexes of bulky, electron-rich N-phosphanyl-substituted N-heterocyclic carbenes (NHCP ligands): small bite angle four-membered (κ-C,κ-P) chelate structures

Bulky, electron-rich N-phosphanyl-substituted N-heterocyclic carbenes (NHCP ligands: EtCNP 3, MesCNP 5a, DippCNP 5b) are potential ligands for strained, very small bite angle four-membered transition metal chelate complexes with (κ-C,κ-P) metal coordination. Various compounds of this type have been...

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Bibliographic Details
Main Authors: Nägele, Philipp (Author) , Herrlich, Ulrike (Author) , Rominger, Frank (Author) , Hofmann, Peter (Author)
Format: Article (Journal)
Language:English
Published: 2013
In: Organometallics
Year: 2013, Volume: 32, Issue: 1, Pages: 181-191
ISSN:1520-6041
DOI:10.1021/om300963t
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/om300963t
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Author Notes:Philipp Nägele, Ulrike Herrlich (neé Blumbach), Frank Rominger and Peter Hofmann
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Summary:Bulky, electron-rich N-phosphanyl-substituted N-heterocyclic carbenes (NHCP ligands: EtCNP 3, MesCNP 5a, DippCNP 5b) are potential ligands for strained, very small bite angle four-membered transition metal chelate complexes with (κ-C,κ-P) metal coordination. Various compounds of this type have been synthesized and were fully characterized inter alia by X-ray crystallography. Reactions of isolated NHCP species 3, 5a, and 5b with appropriate metal precursors furnished a series of (κ-C,κ-P)-coordinated four-membered NHCP chelate complexes for the metals of the nickel triad and for ruthenium. The cis-dimethyl Pd(II) complex (MesCNP-κC,κ-P)PdMe2 (8) reacted at room temperature with acceptor-substituted alkenes such as fumaronitrile and maleic anhydride to yield the corresponding η2-olefin complexes 9 and 10 with reductive elimination of ethane. Palladacyclopentadiene complex 11 was formed by addition of two equivalents of dimethyl acetylene dicarboxylate to complex 8 via alkyne-alkyne coupling.
Item Description:Gesehen am 17.11.2021
Physical Description:Online Resource
ISSN:1520-6041
DOI:10.1021/om300963t

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