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Highly Active Binuclear Neutral Nickel(II) Catalysts Affording High Molecular Weight Polyethylene

Highly Active Binuclear Neutral Nickel(II) Catalysts Affording High Molecular Weight Polyethylene

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WEHRMANN, Peter, Stefan MECKING, 2008. Highly Active Binuclear Neutral Nickel(II) Catalysts Affording High Molecular Weight Polyethylene. In: Organometallics. 27(7), pp. 1399-1408. ISSN 0276-7333. eISSN 1520-6041

@article{Wehrmann2008Highl-9660, title={Highly Active Binuclear Neutral Nickel(II) Catalysts Affording High Molecular Weight Polyethylene}, year={2008}, doi={10.1021/om700942z}, number={7}, volume={27}, issn={0276-7333}, journal={Organometallics}, pages={1399--1408}, author={Wehrmann, Peter and Mecking, Stefan} }

<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/123456789/9660"> <dc:contributor>Mecking, Stefan</dc:contributor> <dc:creator>Wehrmann, Peter</dc:creator> <dc:language>eng</dc:language> <dcterms:issued>2008</dcterms:issued> <dc:format>application/pdf</dc:format> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dc:rights>deposit-license</dc:rights> <dc:contributor>Wehrmann, Peter</dc:contributor> <dcterms:bibliographicCitation>First publ. in: Organometallics ; 27 (2008). - S. 1399-1408</dcterms:bibliographicCitation> <dcterms:title>Highly Active Binuclear Neutral Nickel(II) Catalysts Affording High Molecular Weight Polyethylene</dcterms:title> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/9660"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T18:13:31Z</dc:date> <dc:creator>Mecking, Stefan</dc:creator> <dcterms:abstract xml:lang="eng">A series of new binuclear neutral κ2-N,O-chelated Ni(II) complexes [(H2C)n{[(2,6-R2-4-yl-C6H2)-N =C(H)-(3,5-I2-2-O-C6H2)-κ2-N,O]Ni(CH3)(pyridine)}2](R = iPr, 3,5-(CF3)2C6H3; n = 0, 1) are reported. The complexes are single-component catalyst precursors for ethylene polymerization. Catalyst activities exceed those of mononuclear analogues studied substantially. With 3.4 × 105 TO h-1, high molecular weight polymer is obtained (Mw 9.2 × 105 g mol-1; Mn 2.8 × 105 g mol-1). Semicrystalline polyethylene with a low degree of branching is formed (2 to 12 branches/1000 carbon atoms; prepared at 30 to 70 °C polymerization temperature), with Tm 112 to 136 °C. Polymerization in aqueous emulsion affords polyethylene dispersions.</dcterms:abstract> </rdf:Description> </rdf:RDF>

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