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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| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2013
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| In: |
Organometallics
Year: 2013, Jahrgang: 32, Heft: 1, Pages: 181-191 |
| ISSN: | 1520-6041 |
| DOI: | 10.1021/om300963t |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/om300963t |
| Verfasserangaben: | Philipp Nägele, Ulrike Herrlich (neé Blumbach), Frank Rominger and Peter Hofmann |
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| 245 | 1 | 0 | |a Transition metal complexes of bulky, electron-rich N-phosphanyl-substituted N-heterocyclic carbenes (NHCP ligands) |b small bite angle four-membered (κ-C,κ-P) chelate structures |c Philipp Nägele, Ulrike Herrlich (neé Blumbach), Frank Rominger and Peter Hofmann |
| 246 | 3 | 3 | |a Transition metal complexes of bulky, electron-rich N-phosphanyl-substituted N-heterocyclic carbenes (NHCP ligands)$dsmall bite angle four-membered (kappa-C,kappa-P) chelate structures |
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| 520 | |a 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. | ||
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