KOPS - Das Institutionelle Repositorium der Universität Konstanz

Intermetallic Communication through Carbon Wires in Heterobinuclear Cationic Allenylidene Complexes of Chromium

Intermetallic Communication through Carbon Wires in Heterobinuclear Cationic Allenylidene Complexes of Chromium

Zitieren

Dateien zu dieser Ressource

Prüfsumme: MD5:a76505a079fa9eaed820ad7a49a9136c

SZESNI, Normen, Matthias DREXLER, Jörg MAURER, Rainer WINTER, Frédéric de MONTIGNY, Claude LAPINTE, Stefan STEFFENS, Jürgen HECK, Bernhard WEIBERT, Helmut FISCHER, 2006. Intermetallic Communication through Carbon Wires in Heterobinuclear Cationic Allenylidene Complexes of Chromium. In: Organometallics. 25(24), pp. 5774-5787. ISSN 0276-7333

@article{Szesni2006Inter-13802, title={Intermetallic Communication through Carbon Wires in Heterobinuclear Cationic Allenylidene Complexes of Chromium}, year={2006}, doi={10.1021/om0607301}, number={24}, volume={25}, issn={0276-7333}, journal={Organometallics}, pages={5774--5787}, author={Szesni, Normen and Drexler, Matthias and Maurer, Jörg and Winter, Rainer and Montigny, Frédéric de and Lapinte, Claude and Steffens, Stefan and Heck, Jürgen and Weibert, Bernhard and Fischer, Helmut} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/13802"> <dc:creator>Montigny, Frédéric de</dc:creator> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-06-22T08:13:25Z</dc:date> <dc:contributor>Szesni, Normen</dc:contributor> <dcterms:bibliographicCitation>First publ. in: Organometallics 25 (2006), 24, pp. 5774-5787</dcterms:bibliographicCitation> <dc:creator>Szesni, Normen</dc:creator> <dc:contributor>Fischer, Helmut</dc:contributor> <dc:creator>Fischer, Helmut</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/13802"/> <dc:contributor>Weibert, Bernhard</dc:contributor> <dc:contributor>Montigny, Frédéric de</dc:contributor> <dc:creator>Winter, Rainer</dc:creator> <dc:contributor>Drexler, Matthias</dc:contributor> <dc:language>eng</dc:language> <dc:contributor>Winter, Rainer</dc:contributor> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103605204-4002607-1"/> <dc:creator>Maurer, Jörg</dc:creator> <dc:contributor>Maurer, Jörg</dc:contributor> <dcterms:issued>2006</dcterms:issued> <dc:creator>Heck, Jürgen</dc:creator> <dc:contributor>Lapinte, Claude</dc:contributor> <dcterms:title>Intermetallic Communication through Carbon Wires in Heterobinuclear Cationic Allenylidene Complexes of Chromium</dcterms:title> <dcterms:abstract xml:lang="eng">The reaction of [(CO)5M(THF)] (M = Cr, W) with lithiated 2-ethynylquinoline followed by alkylation of the resulting alkynylpentacarbonylmetalate with [R3O]BF4 (R = Me, Et) gives allenylidene complexes in which the terminal carbon atom of the allenylidene chain is part of an N-alkylated quinoline ring. The reaction of [(CO)5M(THF)] (M = Cr, W) with lithiated 2-ethynylpyridine derivatives, Li[CCC5H4BrN], and [Et3O]BF4 affords allenylidene complexes that contain a terminal six-membered N-heterocycle brominated at the 5- or 6-position. Various alkynyl groups can be introduced into the 5-position of the ring through [PdCl2(PPh3)2]-catalyzed coupling of the 5-bromo-substituted allenylidene complexes with the terminal alkynes HCCR‘ (R‘ = TMS, Ph, C10H21, 4-C6H4-CCPh, 4-C6H4-CCH, Fc (Fc = (C5H4)FeCp), 4-C6H4-CCFc, 4-C6H4-CCC6H4CCFc). The analogous replacement reaction of the 6-bromo-substituted chromium complex with HCCFc yields the corresponding 6-ferrocenylalkynyl-substituted complex. Desilylation of (6a) gives (15a). CuI-catalyzed coupling of 15a with {M}−Br ({M} = Ru(CO)2Cp, Fe(CO)2Cp*) affords the binuclear complexes The symmetrical binuclear complex is formed by oxidative coupling of 15a with [Cu(OAc)2]. The attachment of a ferrocenyl group to the chromium center via PPh2 to give is achieved via displacement of a cis-CO ligand in by PPh2Fc. On addition of Co2(CO)8 to a Co2(CO)6 unit adds to the CC bond to form a trinuclear complex. The ferrocenyl unit in (R = Fc, C6H4CCFc, C6H4CCC6H4CCFc) is readily oxidized. Spectroelectrochemical studies (IR, UV/vis) confirm that in the oxidized form there is strong electronic communication of the ferrocenyl group with the (CO)5Cr unit.</dcterms:abstract> <dc:creator>Weibert, Bernhard</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-06-22T08:13:25Z</dcterms:available> <dc:contributor>Steffens, Stefan</dc:contributor> <dc:creator>Steffens, Stefan</dc:creator> <dc:contributor>Heck, Jürgen</dc:contributor> <dc:rights>deposit-license</dc:rights> <dc:creator>Lapinte, Claude</dc:creator> <dc:creator>Drexler, Matthias</dc:creator> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

szesni_intermetallic_2006.pdf 1049

Das Dokument erscheint in:

KOPS Suche


Stöbern

Mein Benutzerkonto