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Verfasst von:Kühnel, Erik [VerfasserIn]   i
 Rominger, Frank [VerfasserIn]   i
 Oeser, Thomas [VerfasserIn]   i
 Hofmann, Peter [VerfasserIn]   i
Titel:Synthesis and structures of copper(I) complexes with phosphino-functionalized N-heterocyclic carbenes (NHCP) and Bis-N-heterocyclic carbenes (Bis-NHC)
Verf.angabe:Erik Kühnel, Igor V. Shishkov, Frank Rominger, Thomas Oeser, and Peter Hofmann
E-Jahr:2012
Jahr:26 November 2012
Umfang:12 S.
Fussnoten:Gesehen am 27.11.2018
Titel Quelle:Enthalten in: Organometallics
Ort Quelle:Washington, DC : ACS Publ., 1982
Jahr Quelle:2012
Band/Heft Quelle:31(2012), 22, Seite 8000-8011
ISSN Quelle:1520-6041
Abstract:New copper(I) complexes bearing N-phosphino- and N-phosphinomethyl-functionalized NHC ligands (NHCP systems) were synthesized and fully characterized. Using halide-containing copper(I) precursors, strikingly different structural motifs were found, dependent on the substitution pattern of the NHCP moiety. An interesting tetranuclear μ4-bridged copper(I) cluster (4b) is formed when CuBr·SMe2 is reacted with the N-phosphino-substituted ligand 1a, whereas the dinuclear complex 4a is formed in an analogous reaction with 1b. Dinuclear metallacycles (2a,b) were isolated and characterized by X-ray diffraction when the halide-free copper(I) precursor [Cu(CH3CN)4]PF6 was reacted with NHCP ligands 1a,b using the N-phosphinomethyl-substituted NHCP ligands 5a,b, as well as employing the bis-NHC ligands BIM and BIM-BMe2 (10a,b), respectively. The observed copper(I)-copper(I) distances are directly correlated with the size of the metallacycle formed. An unexpected strong influence upon the metal-metal separation was found for the charged complexes in 10a,b. Using directly N-tBu-substituted NHCP ligands led to formation of an electronically less favorable trans-C,C coordination at the copper(I) centers (3 and 6a), which inhibited the formation of a dimeric species in the case of 3.
DOI:doi:10.1021/om300701u
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: http://dx.doi.org/10.1021/om300701u
 Volltext: https://doi.org/10.1021/om300701u
 DOI: https://doi.org/10.1021/om300701u
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1584499745
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