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Ethylene Trimerization with Cr-PNP and Cr-SNS Complexes: Effect of Ligand Structure, Metal Oxidation State, and Role of Activator on Catalysis
journal contribution
posted on 2023-05-16, 19:50 authored by McGuinness, DS, Brown, DB, Tooze, RP, Hess, FM, Dixon, JT, Slawin, AMZSelected PNP and SNS ethylene trimerization ligands have been coordinated to CrII and CrIII, and further reactions of these complexes have been studied. The ligands are easily deprotonated to afford monoanionic tridentate ligands. All prepared complexes gave ethylene trimerization catalysis with varying degrees of activity upon activation with both MAO and AlR3/B(C6F5)3. The results of this study show that the role of MAO during activation is one of deprotonation, Cr reduction, and cation generation. A Cr II→CrIV cationic mechanism is suggested. © 2006 American Chemical Society.
History
Publication title
OrganometallicsVolume
25Issue
15Pagination
3605-3610ISSN
0276-7333Department/School
School of Natural SciencesPublisher
American Chemical SocietyPlace of publication
WashingtonRepository Status
- Restricted