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Article: Chromium(iii) catalysed ethylene tetramerization promoted by bis(phosphino)amines with an N-functionalized pendant

TitleChromium(iii) catalysed ethylene tetramerization promoted by bis(phosphino)amines with an N-functionalized pendant
Authors
Issue Date2007
Citation
Dalton Transactions, 2007, n. 32, p. 3493-3498 How to Cite?
AbstractSeveral N-functionalized bis(phosphino)amine ligands with ether, thioether and pyridyl tethers [(R″)2PN(R′)P(R″)2 = PNP] (1a-1g) have been synthesized. They react with CrCl3(THF) 3 in CH2Cl2 to give dinuclear chloro bridged Cr2(-Cl)2Cl4(PNP)2 (2) which converts to the corresponding mononuclear solvento complexes fac-CrCl 3(PNP)(NCR) (3). The structures of the ligand 1d with R′ = -(CH2)3SCH3 and R″ = Ph, and the complexes with R = CH3 (3a) and C2H5 (3b), R′ = -(CH2)3SCH3 and R″ = Ph) have been established by single-crystal X-ray crystallography. All ligands are active towards ethylene tetramerization in the presence of Cr(iii) and excess MAO at 80 °C in toluene. The ligand with thioether pendant Et2PN(CH 2CH2CH2SCH3)PEt2 (1c) shows the highest selectivity (55% weight in liquid product distribution) towards 1-octene. Complexes 3a and 3b are active towards ethylene polymerization under thermal conditions. © The Royal Society of Chemistry.
Persistent Identifierhttp://hdl.handle.net/10722/237576
ISSN
2017 Impact Factor: 4.099
2015 SCImago Journal Rankings: 1.404
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWeng, Zhiqiang-
dc.contributor.authorTeo, Shihui-
dc.contributor.authorAndy Hor, T. S.-
dc.date.accessioned2017-01-16T06:09:54Z-
dc.date.available2017-01-16T06:09:54Z-
dc.date.issued2007-
dc.identifier.citationDalton Transactions, 2007, n. 32, p. 3493-3498-
dc.identifier.issn1477-9226-
dc.identifier.urihttp://hdl.handle.net/10722/237576-
dc.description.abstractSeveral N-functionalized bis(phosphino)amine ligands with ether, thioether and pyridyl tethers [(R″)2PN(R′)P(R″)2 = PNP] (1a-1g) have been synthesized. They react with CrCl3(THF) 3 in CH2Cl2 to give dinuclear chloro bridged Cr2(-Cl)2Cl4(PNP)2 (2) which converts to the corresponding mononuclear solvento complexes fac-CrCl 3(PNP)(NCR) (3). The structures of the ligand 1d with R′ = -(CH2)3SCH3 and R″ = Ph, and the complexes with R = CH3 (3a) and C2H5 (3b), R′ = -(CH2)3SCH3 and R″ = Ph) have been established by single-crystal X-ray crystallography. All ligands are active towards ethylene tetramerization in the presence of Cr(iii) and excess MAO at 80 °C in toluene. The ligand with thioether pendant Et2PN(CH 2CH2CH2SCH3)PEt2 (1c) shows the highest selectivity (55% weight in liquid product distribution) towards 1-octene. Complexes 3a and 3b are active towards ethylene polymerization under thermal conditions. © The Royal Society of Chemistry.-
dc.languageeng-
dc.relation.ispartofDalton Transactions-
dc.titleChromium(iii) catalysed ethylene tetramerization promoted by bis(phosphino)amines with an N-functionalized pendant-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1039/b702636f-
dc.identifier.scopuseid_2-s2.0-34547655504-
dc.identifier.issue32-
dc.identifier.spage3493-
dc.identifier.epage3498-
dc.identifier.eissn1477-9234-
dc.identifier.isiWOS:000248583500006-

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