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Half-titanocene 5-t-butyl-2-(1-(arylimino)methyl)quinolin-8-olate chlorides: Synthesis, characterization and ethylene (co-) polymerization behavior

Redshaw, Carl; Chen, Langqiu; Sun, Wen-Hua; Wang, Lin; Yan, Qing; Yang, Wenhong

Authors

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Professor Carl Redshaw C.Redshaw@hull.ac.uk
Professor of Inorganic Materials Chemistry and REF Lead for Chemistry

Langqiu Chen

Wen-Hua Sun

Lin Wang

Qing Yan

Wenhong Yang



Abstract

A series of half-titanocene chloride complexes bearing 5-t-butyl-2-(1-(arylimino)methyl)quinolin-8-olate ligands (L), CpTiLCl₂, has been synthesized in acceptable yields by the stoichiometric reaction of CpTiCl₃ with the respective potassium 5-t-butyl-2-(1-(arylimino)methyl)quinolin-8-olate. All half-titanocene complexes were fully characterized by elemental analysis and NMR spectroscopy, and the molecular structures of the representative complexes C1 and C2 were confirmed as pseudo octahedral at titanium by single-crystal X-ray diffraction. When activated with methylaluminoxane (MAO) or modified methylaluminoxane (MMAO), all titanium complexes exhibited good activities (up to 4.8 × 10⁵ g mol⁻¹(Ti) h⁻¹) towards ethylene polymerization. The obtained polyethylene exhibited ultra-high molecular weight (up to 11.82 × 10⁵ g mol⁻¹) with narrow polydispersity. Furthermore, effective co-polymerization of ethylene with 1-hexene or 1-octene was achieved with several percentages of co-monomer incorporation in the resultant polyethylenes.

Citation

Redshaw, C., Chen, L., Sun, W., Wang, L., Yan, Q., & Yang, W. (2014). Half-titanocene 5-t-butyl-2-(1-(arylimino)methyl)quinolin-8-olate chlorides: Synthesis, characterization and ethylene (co-) polymerization behavior. Journal of organometallic chemistry, 753(March), (34-41). doi:10.1016/j.jorganchem.2013.12.021. ISSN 0022-328X

Journal Article Type Article
Acceptance Date Dec 10, 2013
Publication Date Mar 1, 2014
Deposit Date Jun 10, 2015
Publicly Available Date Jun 10, 2015
Journal Journal of organometallic chemistry
Print ISSN 0022-328X
Electronic ISSN 0022-328X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 753
Issue March
Pages 34-41
DOI https://doi.org/10.1016/j.jorganchem.2013.12.021
Keywords 5-t-Butyl-2-(1-(arylimino)methyl)quinolin-8-ol, Half-titanocene, Ethylene polymerization, Co-polymerization
Public URL https://hull-repository.worktribe.com/output/375119
Publisher URL http://www.sciencedirect.com/science/article/pii/S0022328X1300884X
Copyright Statement © 2014, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Additional Information Author's accepted manuscript of article published in: Journal of organometallic chemistry, 2014, v.753, March.

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