Enhancing the activity and thermal stability of iron precatalysts using 2-(1-{2,6-bis[bis(4-fluorophenyl)methyl]-4-methylphenylimino}ethyl) -6-[1-(arylimino)ethyl]pyridines

Sun, Wen Hua; Zhao, Weizhen; Yu, Jiangang; Zhang, Wenjuan; Hao, Xiang; Redshaw, Carl

Abstract

A series of 2-(1-{2,6-bis[bis(4-fluorophenyl)methyl]-4-methylphenylimino} ethyl)-6- [1-(arylimino)ethyl]pyridine ligands is synthesized and fully characterized. The corresponding iron complexes are prepared and characterized by single-crystal X-ray diffraction for representative iron complexes, among other methods, revealing a pseudo square-pyramidal geometry at the iron center. Upon activation with MMAO, all iron precatalysts exhibit high activity in ethylene polymerization, producing linear polyethylene. The observed activity is the highest reported for iron-based precatalysts of this type. The polymerization parameters are shown to strongly affect the catalytic behavior, and both the activity and the polymer properties (i.e. M̄ w or M̄ w/M̄ n) can be controlled. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Citation

Sun, W. H., Zhao, W., Yu, J., Zhang, W., Hao, X., & Redshaw, C. (2012). Enhancing the activity and thermal stability of iron precatalysts using 2-(1-{2,6-bis[bis(4-fluorophenyl)methyl]-4-methylphenylimino}ethyl) -6-[1-(arylimino)ethyl]pyridines. Macromolecular Chemistry and Physics, 213(12), 1266-1273. https://doi.org/10.1002/macp.201200051

• Journal Article Type: Article
• Publication Date: Jun 27, 2012
• Deposit Date: Jun 8, 2022
• Journal: Macromolecular Chemistry and Physics
• Print ISSN: 1022-1352
• Electronic ISSN: 1521-3935
• Publisher: Wiley-VCH Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 213
• Issue: 12
• Pages: 1266-1273
• DOI: https://doi.org/10.1002/macp.201200051
• Public URL: https://hull-repository.worktribe.com/output/3622219