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Synthesis and Nonlinear Optical Properties of New Heptapentaenylidene Complexes :  Study on the Second Harmonic Generation Efficiencies of Amino-Substituted Group 6 Cumulenylidenes

Synthesis and Nonlinear Optical Properties of New Heptapentaenylidene Complexes :  Study on the Second Harmonic Generation Efficiencies of Amino-Substituted Group 6 Cumulenylidenes

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ROTH, Gerhard, Helmut FISCHER, Timo MEYER-FRIEDRICHSEN, Jürgen HECK, Stephan HOUBRECHTS, Andé PERSOONS, 1998. Synthesis and Nonlinear Optical Properties of New Heptapentaenylidene Complexes :  Study on the Second Harmonic Generation Efficiencies of Amino-Substituted Group 6 Cumulenylidenes. In: Organometallics. 17(8), pp. 1511-1516. ISSN 0276-7333. eISSN 1520-6041

@article{Roth1998Synth-23049, title={Synthesis and Nonlinear Optical Properties of New Heptapentaenylidene Complexes :  Study on the Second Harmonic Generation Efficiencies of Amino-Substituted Group 6 Cumulenylidenes}, year={1998}, doi={10.1021/om970896p}, number={8}, volume={17}, issn={0276-7333}, journal={Organometallics}, pages={1511--1516}, author={Roth, Gerhard and Fischer, Helmut and Meyer-Friedrichsen, Timo and Heck, Jürgen and Houbrechts, Stephan and Persoons, Andé} }

<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/123456789/23049"> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/23049"/> <dc:contributor>Meyer-Friedrichsen, Timo</dc:contributor> <dc:creator>Roth, Gerhard</dc:creator> <dcterms:issued>1998</dcterms:issued> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-06-06T06:51:05Z</dcterms:available> <dc:creator>Houbrechts, Stephan</dc:creator> <dc:contributor>Heck, Jürgen</dc:contributor> <dc:creator>Fischer, Helmut</dc:creator> <dc:creator>Heck, Jürgen</dc:creator> <dcterms:abstract xml:lang="eng">Reaction of the ynamine MeCCNEt2 with the pentatetraenylidene complexes [(CO)5MCCCCC(NMe2)2] (M = Cr (3a), W (3b)) at room temperature affords the new heptapentaenylidene complexes [(CO)5MCCCCC(NEt2)C(Me)C(NMe2)2] (M = Cr (5a), W (5b)) in good yield. The spectroscopic data and the X-ray structural analysis of 5a indicate that these amino-substituted metallacumulenes are best described as hybrids of a cumulene and several strongly polarized alkynyl structures. For 5a and the related metallacumulenes [(CO)5MCCC(NMe2)2] (M = Cr (1a), W (1b)), [(CO)5CrCCC(NEt2)C(H)C(NMe2)2] (2a), and 3a,b the molecular first hyperpolarizability β was determined by hyper-Rayleigh scattering experiments. The insertion of a cumulated C2 unit into a metallacumulene quadruples β, while the insertion of a conjugated C2 unit results in only slight enhancement of the second harmonic generation response. Substitution of tungsten for chromium has only a minor effect on β. All observed β values are reasonably high compared with those of other organometallic compounds.</dcterms:abstract> <dcterms:title>Synthesis and Nonlinear Optical Properties of New Heptapentaenylidene Complexes :  Study on the Second Harmonic Generation Efficiencies of Amino-Substituted Group 6 Cumulenylidenes</dcterms:title> <dc:language>eng</dc:language> <dc:contributor>Fischer, Helmut</dc:contributor> <dc:creator>Persoons, Andé</dc:creator> <dc:contributor>Houbrechts, Stephan</dc:contributor> <dc:contributor>Persoons, Andé</dc:contributor> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103605204-4002607-1"/> <dc:rights>deposit-license</dc:rights> <dcterms:bibliographicCitation>Organometallics ; 17 (1998), 8. - S. 1511-1516</dcterms:bibliographicCitation> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-06-06T06:51:05Z</dc:date> <dc:contributor>Roth, Gerhard</dc:contributor> <dc:creator>Meyer-Friedrichsen, Timo</dc:creator> </rdf:Description> </rdf:RDF>

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