Nickel pre-catalysts bearing [(<i>N</i>)-imidoylamidine] ligands; influence of the presence of pyridine and pentafluorophenyl groups in ligand backbone on the reactivity in ethylene polymerizations

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dc.contributor.authorPeoples, Brian C.
dc.contributor.authorDe la Vega, Gala
dc.contributor.authorValdebenito, Carolina
dc.contributor.authorQuijada, Raul
dc.contributor.authorIbanez, Andres
dc.contributor.authorValderrama, Mauricio
dc.contributor.authorRojas, Rene
dc.date.accessioned2025-01-20T23:59:18Z
dc.date.available2025-01-20T23:59:18Z
dc.date.issued2012
dc.description.abstractIn this contribution the synthesis and polymerization activity of the nickel complexes [NiBr2{N'-(2,6-diisopropylphenyl)-N-[1-(2,6-diisopropylphenylimine)ethyl]-N-(2,3,4,5,6-pentafluorophenyl)acetamidine}] (2), [NiBr2{N'-(2,6-diisopropylphenyl)-N-[1-(2,6-diisopropylphenylimine)ethyl]-N-(2,3,4,5,6-pentafluorophenylimine) ethylacetamidine}] (2a) and [NiBr2 {N-(2,6-diisopropylphenyl)-N-[1-(2,6-diisopropylphenylimine)]-N-(pyridin-4-yl)acetamidine}] (3)are reported. The variation of the phenyl substituents on the beta amine was found to influence the polymerization activity of the complexes. The electron withdrawing/donating capacity of the substituted ring was found to be correlated with the polymerization activity, with the pentafluoro substituted ring increasing the polymerization activity and the pyridine ring decreasing the activity. The ligands and complexes were characterized using standard techniques and the polymer properties analyzed. (C) 2011 Elsevier B. V. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jorganchem.2011.11.035
dc.identifier.issn0022-328X
dc.identifier.urihttps://doi.org/10.1016/j.jorganchem.2011.11.035
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95290
dc.identifier.wosidWOS:000299534600021
dc.language.isoen
dc.pagina.final153
dc.pagina.inicio147
dc.revistaJournal of organometallic chemistry
dc.rightsacceso restringido
dc.subjectNi polymerization catalysts
dc.subjectImidoyl chloride
dc.subjectLate transition metal catalyst
dc.subjectEthylene polymerization
dc.subjectCatalysts
dc.titleNickel pre-catalysts bearing [(<i>N</i>)-imidoylamidine] ligands; influence of the presence of pyridine and pentafluorophenyl groups in ligand backbone on the reactivity in ethylene polymerizations
dc.typeartículo
dc.volumen700
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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