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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/39233
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dc.contributor.authorKunrath, F. A.-
dc.contributor.authorde Souza, R. F.-
dc.contributor.authorCasagrande, O. L.-
dc.contributor.authorBrooks, N. R.-
dc.contributor.authorYoung, V. G.-
dc.date.accessioned2014-05-20T15:29:43Z-
dc.date.accessioned2016-10-25T18:04:58Z-
dc.date.available2014-05-20T15:29:43Z-
dc.date.available2016-10-25T18:04:58Z-
dc.date.issued2003-11-10-
dc.identifierhttp://dx.doi.org/10.1021/om034035u-
dc.identifier.citationOrganometallics. Washington: Amer Chemical Soc, v. 22, n. 23, p. 4739-4743, 2003.-
dc.identifier.issn0276-7333-
dc.identifier.urihttp://hdl.handle.net/11449/39233-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/39233-
dc.description.abstractThe reaction of TlTp' (Tp' = HB(3-mesitylpyrazolyl)(3)(-) (Tp(Ms)), HB(3-mesitylpyrazolyl)(2)(5-mesitylpyrazolyl)(-) (Tp(Ms)*)) with NiCl(2).6H(2)O affords Tp(Ms)NiCl (1) and Tp(Ms)*NiCl (2) in good yield. The compound 2 undergoes an isomerization process to form [{Tp(Ms)**}NiCl](2) (3) (Tp(Ms)** = HB(5-mesitylpyrazolyl)(2)(3-mesitylpyrazolyl)(-)) in 68% yield. Treatment of the tris(pyrazolyl)-borate nickel compounds 1 and 2 with alkylaluminum cocatalysts such as methylalumoxane (MAO) and trimethylaluminum (TMA) in toluene generates active catalysts for ethylene oligomerization. The compound 1 shows turnover frequencies in the range of (2.2-43.1) x 10(3) h(-1). Oligomerization reaction conditions can be adjusted that lead to selectivities as high as 81% for butene-1.en
dc.format.extent4739-4743-
dc.language.isoeng-
dc.publisherAmer Chemical Soc-
dc.sourceWeb of Science-
dc.titleHighly selective nickel ethylene oligomerization catalysts based on sterically hindered tris(pyrazolyl)borate ligandsen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal do Rio Grande do Sul (UFRGS)-
dc.contributor.institutionUniv Minnesota-
dc.description.affiliationUniv Estadual Paulista, Inst Quim Araraquara, BR-14800900 Araraquara, SP, Brazil-
dc.description.affiliationUniv Fed Rio Grande do Sul, Inst Quim, Lab Catalise Mol, BR-90501970 Porto Alegre, RS, Brazil-
dc.description.affiliationUniv Minnesota, Dept Chem, Xray Crystallog Lab, Minneapolis, MN 55455 USA-
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim Araraquara, BR-14800900 Araraquara, SP, Brazil-
dc.identifier.doi10.1021/om034035u-
dc.identifier.wosWOS:000186401300021-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofOrganometallics-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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