Halonickel 2,4-di-t-butyl-6-(quinolin-8-yliminomethyl)phenolates: Synthesis, characterization and ethylene reactivity

Shi, Qi Song; Hao, Xiang; Redshaw, Carl; Sun, Wen Hua

Abstract

A series of nickel halides bearing 2,4-di-t-butyl-6-(quinolin-8- yliminomethyl) phenolate ligands was synthesized and characterized by IR spectroscopy and elemental analysis. Molecular structures of C1 (R = H, X = Br) and C2 (R = H, X = Cl) were further confirmed by single-crystal X-ray crystallographic studies, and revealed a distorted square planar geometry at nickel. Upon activation with diethylaluminum chloride (Et2AlCl), all nickel pre-catalysts displayed good catalytic activity [up to 9.3 × 105 g mol-1 (Ni) h-1] for ethylene oligomerization with major dimerization. In the presence of methylaluminoxane (MAO), the nickel complex C1 was capable of ethylene polymerization under 3 MPa, and produced polyethylene products with narrow polydispersity (1.16-1.73) and molecular weights in the range of 2.6-4.95 kg/mol. © 2013 Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg.

Citation

Shi, Q. S., Hao, X., Redshaw, C., & Sun, W. H. (2013). Halonickel 2,4-di-t-butyl-6-(quinolin-8-yliminomethyl)phenolates: Synthesis, characterization and ethylene reactivity. Chinese Journal of Polymer Science, 31(5), 769-777. https://doi.org/10.1007/s10118-013-1266-z

• Journal Article Type: Article
• Publication Date: May 1, 2013
• Deposit Date: Jun 8, 2022
• Journal: Chinese Journal of Polymer Science (English Edition)
• Print ISSN: 0256-7679
• Electronic ISSN: 1793-7043
• Publisher: World Scientific Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 31
• Issue: 5
• Pages: 769-777
• DOI: https://doi.org/10.1007/s10118-013-1266-z
• Public URL: https://hull-repository.worktribe.com/output/3622008