Publikation:

ansa-metallocene derivatives : IX. Electrochemical reactions of tetramethylethylene-bridged titanocene dichloride and dicarbonyl derivatives

Lade...
Vorschaubild

Dateien

Schwemlein_239983.pdf
Schwemlein_239983.pdfGröße: 519.44 KBDownloads: 565

Datum

1985

Autor:innen

Schwemlein, Heinz
Tritschler, Wolfgang
Kiesele, Herbert

Herausgeber:innen

Kontakt

ISSN der Zeitschrift

Electronic ISSN

ISBN

Bibliografische Daten

Verlag

Schriftenreihe

Auflagebezeichnung

ArXiv-ID

Internationale Patentnummer

Angaben zur Forschungsförderung

Projekt

Open Access-Veröffentlichung
Open Access Green
Core Facility der Universität Konstanz

Gesperrt bis

Titel in einer weiteren Sprache

Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published

Erschienen in

Journal of Organometallic Chemistry. 1985, 293(3), pp. 353-364. ISSN 0022-328X. Available under: doi: 10.1016/0022-328X(85)80304-1

Zusammenfassung

In the reduction of tetramethylethylene-bridged (CH13)4C2(C5H4)2TiCl2 under argon, studied by cyclic voltammetry, a first reduction to the TiIII stage occurs at a potential of −0.92 V vs. SCE, close to that of (C5H5)2TiCl2, and a second reduction to the TiII stage at a potential of −2.53 V, about 0.3 V more negative than in the corresponding reduction of the unbridged analogue. Decay of the tetramethylethylene-bridged TiII product is considerably faster than that of its unbridged analogue. Changes induced by the presence of an N2 or H2 atmosphere indicate the occurrence of secondary reactions.

In the presence of CO, reduction to (CH3)4C2(C5H4)2Ti(CO)2 occurs at −2.0 V. This tetramethylethylene-bridged titanocene dicarbonyl complex, which is also formed by reduction of (CH3)4C2(C5H4)2TiCl2 with Mg metal under CO, undergoes irreversible reduction and oxidation at −2.78 and −0.08 V, respectively. When the latter process is conducted in the presence of Cl, the dichloride (CH3)4C2(C5H4)2TiCl2 is regenerated.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
540 Chemie

Schlagwörter

Konferenz

Rezension
undefined / . - undefined, undefined

Forschungsvorhaben

Organisationseinheiten

Zeitschriftenheft

Zugehörige Datensätze in KOPS

Zitieren

ISO 690SCHWEMLEIN, Heinz, Wolfgang TRITSCHLER, Herbert KIESELE, Hans-Herbert BRINTZINGER, 1985. ansa-metallocene derivatives : IX. Electrochemical reactions of tetramethylethylene-bridged titanocene dichloride and dicarbonyl derivatives. In: Journal of Organometallic Chemistry. 1985, 293(3), pp. 353-364. ISSN 0022-328X. Available under: doi: 10.1016/0022-328X(85)80304-1
BibTex
@article{Schwemlein1985ansam-23998,
  year={1985},
  doi={10.1016/0022-328X(85)80304-1},
  title={ansa-metallocene derivatives : IX. Electrochemical reactions of tetramethylethylene-bridged titanocene dichloride and dicarbonyl derivatives},
  number={3},
  volume={293},
  issn={0022-328X},
  journal={Journal of Organometallic Chemistry},
  pages={353--364},
  author={Schwemlein, Heinz and Tritschler, Wolfgang and Kiesele, Herbert and Brintzinger, Hans-Herbert}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/23998">
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-07-09T13:09:20Z</dc:date>
    <dc:contributor>Brintzinger, Hans-Herbert</dc:contributor>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:creator>Kiesele, Herbert</dc:creator>
    <dc:creator>Schwemlein, Heinz</dc:creator>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:contributor>Tritschler, Wolfgang</dc:contributor>
    <dc:creator>Tritschler, Wolfgang</dc:creator>
    <dc:creator>Brintzinger, Hans-Herbert</dc:creator>
    <dcterms:bibliographicCitation>Journal of Organometallic Chemistry ; 293 (1985), 3. - S. 353-364</dcterms:bibliographicCitation>
    <dcterms:abstract xml:lang="eng">In the reduction of tetramethylethylene-bridged (CH&lt;sub&gt;13&lt;/sub&gt;)&lt;sub&gt;4&lt;/sub&gt;C&lt;sub&gt;2&lt;/sub&gt;(C&lt;sub&gt;5&lt;/sub&gt;H&lt;sub&gt;4&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;TiCl&lt;sub&gt;2&lt;/sub&gt; under argon, studied by cyclic voltammetry, a first reduction to the Ti&lt;sup&gt;III&lt;/sup&gt; stage occurs at a potential of −0.92 V vs. SCE, close to that of (C&lt;sub&gt;5&lt;/sub&gt;H&lt;sub&gt;5&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;TiCl&lt;sub&gt;2&lt;/sub&gt;, and a second reduction to the Ti&lt;sup&gt;II&lt;/sup&gt; stage at a potential of −2.53 V, about 0.3 V more negative than in the corresponding reduction of the unbridged analogue. Decay of the tetramethylethylene-bridged Ti&lt;sup&gt;II&lt;/sup&gt; product is considerably faster than that of its unbridged analogue. Changes induced by the presence of an N&lt;sub&gt;2&lt;/sub&gt; or H&lt;sub&gt;2&lt;/sub&gt; atmosphere indicate the occurrence of secondary reactions.&lt;br /&gt;&lt;br /&gt;In the presence of CO, reduction to (CH&lt;sub&gt;3&lt;/sub&gt;)&lt;sub&gt;4&lt;/sub&gt;C&lt;sub&gt;2&lt;/sub&gt;(C&lt;sub&gt;5&lt;/sub&gt;H&lt;sub&gt;4&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;Ti(CO)&lt;sub&gt;2&lt;/sub&gt; occurs at −2.0 V. This tetramethylethylene-bridged titanocene dicarbonyl complex, which is also formed by reduction of (CH&lt;sub&gt;3&lt;/sub&gt;)&lt;sub&gt;4&lt;/sub&gt;C&lt;sub&gt;2&lt;/sub&gt;(C&lt;sub&gt;5&lt;/sub&gt;H&lt;sub&gt;4&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;TiCl&lt;sub&gt;2&lt;/sub&gt; with Mg metal under CO, undergoes irreversible reduction and oxidation at −2.78 and −0.08 V, respectively. When the latter process is conducted in the presence of Cl&lt;sup&gt;−&lt;/sup&gt;, the dichloride (CH&lt;sub&gt;3&lt;/sub&gt;)&lt;sub&gt;4&lt;/sub&gt;C&lt;sub&gt;2&lt;/sub&gt;(C&lt;sub&gt;5&lt;/sub&gt;H&lt;sub&gt;4&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;TiCl&lt;sub&gt;2&lt;/sub&gt; is regenerated.</dcterms:abstract>
    <dc:rights>terms-of-use</dc:rights>
    <dc:language>eng</dc:language>
    <dcterms:title>ansa-metallocene derivatives : IX. Electrochemical reactions of tetramethylethylene-bridged titanocene dichloride and dicarbonyl derivatives</dcterms:title>
    <dc:contributor>Kiesele, Herbert</dc:contributor>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/23998"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/29"/>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/29"/>
    <dc:contributor>Schwemlein, Heinz</dc:contributor>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-07-09T13:09:20Z</dcterms:available>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/23998/2/Schwemlein_239983.pdf"/>
    <dcterms:issued>1985</dcterms:issued>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/23998/2/Schwemlein_239983.pdf"/>
  </rdf:Description>
</rdf:RDF>

Interner Vermerk

xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter

Kontakt
URL der Originalveröffentl.

Prüfdatum der URL

Prüfungsdatum der Dissertation

Finanzierungsart

Kommentar zur Publikation

Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Begutachtet
Diese Publikation teilen