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Synthesis and characterization of trichlorotitanium 2-(2- pyridinyliminomethyl)phenolates and their ethylene (co-)polymerization behavior

Wang, Youhong; Zhang, Wenjuan; Huang, Wei; Wang, Lin; Redshaw, Carl; Sun, Wen Hua

Authors

Youhong Wang

Wenjuan Zhang

Wei Huang

Lin Wang

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

Wen Hua Sun



Abstract

The series of trichlorotitanium 2-(2-pyridinyliminomethyl)phenolates, [4,6-tBu2C6H2O-2-CHNC5R 1-4N]TiCl3 (R1-4 = H (1); R1,3,4 = H, R2 = Me (2); R1,2,4 = H, R3 = Me (3); R 2,4 = H, R1,3 = Me (4); R1,3 = H, R2 = CF3, R4 = Cl (5)), were synthesized and characterized by elemental analysis and 1H/13C NMR spectroscopy. The molecular structures of the representative complexes 2 and 4 were confirmed by single-crystal X-ray diffraction, and revealed distorted octahedral geometry at titanium. In the presence of MAO, all titanium pro-catalysts showed good activities for ethylene polymerization with good thermal stability at the optimum temperature of 50 °C. In comparison with the ethylene polymerization results, the activity observed for the co-polymerization of ethylene/1-hexene was far lower, but the polymers produced were of high molecular weight. For the co-polymerization of ethylene/1-octene, enhanced catalytic activity was observed, with 1-octene incorporation of up to 3.83 mol%. © 2011 Elsevier Ltd. All rights reserved.

Citation

Wang, Y., Zhang, W., Huang, W., Wang, L., Redshaw, C., & Sun, W. H. (2011). Synthesis and characterization of trichlorotitanium 2-(2- pyridinyliminomethyl)phenolates and their ethylene (co-)polymerization behavior. Polymer, 52(17), 3732-3737. https://doi.org/10.1016/j.polymer.2011.06.036

Journal Article Type Article
Acceptance Date Jun 19, 2011
Online Publication Date Jun 25, 2011
Publication Date Aug 3, 2011
Deposit Date Jun 8, 2022
Journal Polymer
Print ISSN 0032-3861
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 52
Issue 17
Pages 3732-3737
DOI https://doi.org/10.1016/j.polymer.2011.06.036
Keywords Trichlorotitanium 2-(2-pyridinyliminomethyl)phenolates; Ethylene polymerization; Co-polymerization
Public URL https://hull-repository.worktribe.com/output/3622407