Qifeng Xing
Synthesis, characterization and ethylene polymerization behaviour of binuclear nickel halides bearing 4,5,9,10-tetra(arylimino)pyrenylidenes
Xing, Qifeng; Song, Kuifeng; Liang, Tongling; Liu, Qingbin; Sun, Wen-Hua; Redshaw, Carl
Authors
Kuifeng Song
Tongling Liang
Qingbin Liu
Wen-Hua Sun
Professor Carl Redshaw C.Redshaw@hull.ac.uk
Professor of Inorganic Materials Chemistry and REF Lead for Chemistry
Abstract
Pyrene-4,5,9,10-tetraone was prepared via the oxidation of pyrene, and reacted with various anilines to afford a series of 4,5,9,10-tetra(arylimino)pyrenylidene derivatives (L1–L4). The tetraimino-pyrene compounds L1 and L2 were reacted with two equivalents of (DME)NiBr₂ in CH₂Cl₂ to afford the corresponding dinickel bromide complexes (Ni1 and Ni2). The organic compounds were fully characterized, whilst the bi-metallic complexes were characterized by FT-IR spectra and elemental analysis. The molecular structures of representative organic and nickel compounds were confirmed by single-crystal X-ray diffraction studies. These nickel complexes exhibited high activities towards ethylene polymerization in the presence of either MAO or Me₂AlCl, maintaining a high activity over a prolonged period (longer than previously reported dinickel complex pre-catalysts). The polyethylene obtained was characterized by GPC, DSC and FT-IR spectroscopy and was found to possess branched features.
Citation
Xing, Q., Song, K., Liang, T., Liu, Q., Sun, W.-H., & Redshaw, C. (2014). Synthesis, characterization and ethylene polymerization behaviour of binuclear nickel halides bearing 4,5,9,10-tetra(arylimino)pyrenylidenes. Dalton Transactions : an international journal of inorganic chemistry, 43(21), 7830-7837. https://doi.org/10.1039/c4dt00503a
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 28, 2014 |
Online Publication Date | Mar 28, 2014 |
Publication Date | Jun 7, 2014 |
Deposit Date | Jun 9, 2015 |
Publicly Available Date | Jun 9, 2015 |
Journal | Dalton transactions |
Print ISSN | 1477-9226 |
Electronic ISSN | 1477-9234 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 43 |
Issue | 21 |
Pages | 7830-7837 |
DOI | https://doi.org/10.1039/c4dt00503a |
Keywords | Ethylene polymerization; Binuclear nickel halides |
Public URL | https://hull-repository.worktribe.com/output/374925 |
Publisher URL | http://pubs.rsc.org/en/Content/ArticleLanding/2014/DT/c4dt00503a#!divAbstract |
Additional Information | Author's accepted manuscript of article published in: Dalton transactions, 2014, v.43, issue 21. |
Contract Date | Jun 9, 2015 |
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