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Electronic communication in oligonuclear ferrocene complexes with anionic four-coordinate boron bridges

Electronic communication in oligonuclear ferrocene complexes with anionic four-coordinate boron bridges

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KAUFMANN, Linda, Jens-Michael BREUNIG, Hannes VITZE, Frauke SCHÖDEL, Israel NOWIK, Markus PICHLMAIER, Michael BOLTE, Hans-Wolfram LERNER, Rainer WINTER, Rolfe H. HERBER, Matthias WAGNER, 2009. Electronic communication in oligonuclear ferrocene complexes with anionic four-coordinate boron bridges. In: Dalton Transactions(16), pp. 2940-2950. ISSN 1477-9226

@article{Kaufmann2009-04-28Elect-13795, title={Electronic communication in oligonuclear ferrocene complexes with anionic four-coordinate boron bridges}, year={2009}, doi={10.1039/B821406A}, number={16}, issn={1477-9226}, journal={Dalton Transactions}, pages={2940--2950}, author={Kaufmann, Linda and Breunig, Jens-Michael and Vitze, Hannes and Schödel, Frauke and Nowik, Israel and Pichlmaier, Markus and Bolte, Michael and Lerner, Hans-Wolfram and Winter, Rainer and Herber, Rolfe H. and Wagner, Matthias} }

<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/123456789/13795"> <dc:rights>deposit-license</dc:rights> <dc:creator>Vitze, Hannes</dc:creator> <dc:creator>Bolte, Michael</dc:creator> <dc:creator>Schödel, Frauke</dc:creator> <dc:creator>Winter, Rainer</dc:creator> <dc:contributor>Kaufmann, Linda</dc:contributor> <dc:creator>Breunig, Jens-Michael</dc:creator> <dc:contributor>Herber, Rolfe H.</dc:contributor> <dc:creator>Lerner, Hans-Wolfram</dc:creator> <dc:creator>Wagner, Matthias</dc:creator> <dc:creator>Herber, Rolfe H.</dc:creator> <dc:contributor>Schödel, Frauke</dc:contributor> <dc:creator>Pichlmaier, Markus</dc:creator> <dcterms:title>Electronic communication in oligonuclear ferrocene complexes with anionic four-coordinate boron bridges</dcterms:title> <dc:contributor>Lerner, Hans-Wolfram</dc:contributor> <dc:creator>Nowik, Israel</dc:creator> <dc:contributor>Breunig, Jens-Michael</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-06-22T09:16:55Z</dcterms:available> <dc:creator>Kaufmann, Linda</dc:creator> <dc:contributor>Wagner, Matthias</dc:contributor> <dcterms:issued>2009-04-28</dcterms:issued> <dcterms:abstract xml:lang="eng">The di- and trinuclear ferrocene species Li[Fc-BPh2-Fc] (Li[9]) and Li2[Fc-BPh2-fc-BPh2-Fc] (Li2[10]) have been investigated with regard to their electrochemical properties and the degree of intervalence charge-transfer after partial oxidation. Li[9] shows two distinct one-electron redox waves for its chemically equivalent ferrocenyl substituents in the cyclic voltammogram (E1/2 = −0.38 V, −0.64 V; vs. FcH/FcH+). The corresponding values of Li2[10] are E1/2 = −0.45 V (two-electron process) and −1.18 V. All these redox events are reversible at r. t. on the time scale of cyclic voltammetry. X-ray crystallography on the mixed-valent FeII2FeIII complex Li(12-c-4)2[10] reveals the centroid–centroid distance between the cyclopentadienyl rings of each of the terminal ferrocenyl substituents (3.329 Å) to be significantly smaller than in the central 1,1′-ferrocenediyl fragment (3.420 Å). This points towards a charge-localized structure (on the time scale of X-ray crystallography) with the central iron atom being in the FeIII state. Mößbauer spectroscopic measurements on Li(12-c-4)2[10] lend further support to this interpretation. Spectroelectrochemical measurements on Li[9] and Li2[10] in the wavelength range between 300–2800 nm do not show bands interpretable as intervalence charge-transfer absorptions for the mixed-valent states. All data accumulated so far lead to the conclusion that electronic interaction between the individual Fe atoms in Li[9] and Li2[10] occurs via a through-space pathway and/or is electrostatic in nature.</dcterms:abstract> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-06-22T09:16:55Z</dc:date> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/13795"/> <dc:contributor>Bolte, Michael</dc:contributor> <dc:contributor>Pichlmaier, Markus</dc:contributor> <dc:contributor>Winter, Rainer</dc:contributor> <dc:contributor>Vitze, Hannes</dc:contributor> <dc:language>eng</dc:language> <dcterms:bibliographicCitation>First publ. in: Dalton transactions (2009), 16, pp. 2940-2950</dcterms:bibliographicCitation> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103605204-4002607-1"/> <dc:contributor>Nowik, Israel</dc:contributor> </rdf:Description> </rdf:RDF>

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