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- Publisher Website: 10.1039/b909685j
- Scopus: eid_2-s2.0-70350218975
- PMID: 20449213
- WOS: WOS:000270973800034
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Article: Ligand effect on ethylene trimerisation with [NNN]-heteroscorpionate pyrazolyl Cr(III) catalysts
Title | Ligand effect on ethylene trimerisation with [NNN]-heteroscorpionate pyrazolyl Cr(III) catalysts |
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Authors | |
Issue Date | 2009 |
Citation | Dalton Transactions, 2009, n. 42, p. 9327-9333 How to Cite? |
Abstract | Cr(III) complexes with [NNN]-heteroscorpionate pyrazolyl ligands of the type Pz'2CHX (Pz' = pyrazol-l-yl (Pz), or 3,5-dimethylpyrazol-1-yl (PzMe); X = N-containing heterocyclic ring or amine CH 2NR1R2; R1, R2 = H or alkyl) have been prepared. Upon activation with MAO, they are active for selective ethylene trimerisation to 1-hexene. The effects of the hetero-functional group and chelate ring size on the catalytic performance have been examined. The pre-catalysts with an N-heterocycle substituent show highest activity [32400-53000 g/(g Cr h-1)] and total C6 selectivities (>97.6%) as well as 1-hexene selectivity (>96.0%) among hexenes. The X-ray single-crystal crystallographic analysis of CrCl 3[PzMe 2CH2NCH2Ph] and CrCl3[PzMe 2CH2NCH2Fc] (Fc = ferrocenyl) shows a tridentate coordination on the fac-octahedral Cr(III) sphere with the Cr-N bond length dependent on the N-substituent. © 2009 The Royal Society of Chemistry. |
Persistent Identifier | http://hdl.handle.net/10722/219611 |
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 0.697 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhang, Jun | - |
dc.contributor.author | Li, Aifang | - |
dc.contributor.author | Hor, T. S Andy | - |
dc.date.accessioned | 2015-09-23T02:57:31Z | - |
dc.date.available | 2015-09-23T02:57:31Z | - |
dc.date.issued | 2009 | - |
dc.identifier.citation | Dalton Transactions, 2009, n. 42, p. 9327-9333 | - |
dc.identifier.issn | 1477-9226 | - |
dc.identifier.uri | http://hdl.handle.net/10722/219611 | - |
dc.description.abstract | Cr(III) complexes with [NNN]-heteroscorpionate pyrazolyl ligands of the type Pz'2CHX (Pz' = pyrazol-l-yl (Pz), or 3,5-dimethylpyrazol-1-yl (PzMe); X = N-containing heterocyclic ring or amine CH 2NR1R2; R1, R2 = H or alkyl) have been prepared. Upon activation with MAO, they are active for selective ethylene trimerisation to 1-hexene. The effects of the hetero-functional group and chelate ring size on the catalytic performance have been examined. The pre-catalysts with an N-heterocycle substituent show highest activity [32400-53000 g/(g Cr h-1)] and total C6 selectivities (>97.6%) as well as 1-hexene selectivity (>96.0%) among hexenes. The X-ray single-crystal crystallographic analysis of CrCl 3[PzMe 2CH2NCH2Ph] and CrCl3[PzMe 2CH2NCH2Fc] (Fc = ferrocenyl) shows a tridentate coordination on the fac-octahedral Cr(III) sphere with the Cr-N bond length dependent on the N-substituent. © 2009 The Royal Society of Chemistry. | - |
dc.language | eng | - |
dc.relation.ispartof | Dalton Transactions | - |
dc.title | Ligand effect on ethylene trimerisation with [NNN]-heteroscorpionate pyrazolyl Cr(III) catalysts | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1039/b909685j | - |
dc.identifier.pmid | 20449213 | - |
dc.identifier.scopus | eid_2-s2.0-70350218975 | - |
dc.identifier.issue | 42 | - |
dc.identifier.spage | 9327 | - |
dc.identifier.epage | 9333 | - |
dc.identifier.eissn | 1477-9234 | - |
dc.identifier.isi | WOS:000270973800034 | - |
dc.identifier.issnl | 1477-9226 | - |