Publication Type Journal Article
Title Synthesis and Characterization of a Cationic Cyclopentadienyl Nickel(II) Complex of Bis(mesityl-imino)acenaphthene and its Evaluation as a New Catalyst Precursor for Ethylene Polymerization
Authors Claudia A. Figueira Alejandro F. G. Ribeiro Clara S. B. Gomes Anabela Fernandes Linda H. Doerrer Pedro T. Gomes
Groups IOARC MET
Journal JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
Year 2014
Month December
Volume 25
Number 12
Pages 2295-2303
Abstract O complexo cationico ciclopentadienilico de niquel(II) contendo o ligante bis(mesitilimino) acenafteno, de formula [Ni(eta(5)-C5H5)(Mes-BIAN)]PF6 (Mes = mesitil = 2,4,6-Me-3-C6H2; Mes-BIAN = bis(mesitil-imino) acenafteno), foi sintetizado atraves de duas estrategias alternativas, tendo sido obtido com rendimentos moderado a quantitativo. Apesar de ser electronicamente saturado, este novo complexo foi testado na polimerizacao de etileno e propileno na presenca do cocatalisador metilaluminoxano (MAO), mostrando ser um precursor catalitico eficiente da polimerizacao de etileno em condicoes suaves de reacao (baixa temperatura e pressao), enquanto que se revelou inativo em relacao ao propileno. Os polietilenos obtidos apresentam ramificacoes metilicas e um baixo teor em ramificacoes longas. A cationic cyclopentadienyl nickel(II) complex of bis(mesityl-imino) acenaphthene, [Ni(eta(5)-C5H5)(Mes-BIAN)]PF6 (Mes = mesityl = 2,4,6-Me-3-C6H2; Mes-BIAN = bis(mesitylimino) acenaphthene), was synthesized via two alternative routes, being obtained in moderate to quantitative yields. Although electronically saturated, this new complex was tested in the polymerization of ethylene and propylene in the presence of the cocatalyst methylaluminoxane (MAO), and found to behave as an efficient catalyst precursor for the polymerization of ethylene under mild reaction conditions (low temperature and pressure), whereas it was inactive towards propylene. The polyethylenes produced show methyl branching and a low content of long branches.
DOI http://dx.doi.org/10.5935/0103-5053.20140224
ISBN
Publisher SOC BRASILEIRA QUIMICA
Book Title
ISSN 0103-5053
EISSN 1678-4790
Conference Name
Bibtex ID ISI:000348192900010
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