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2-{2,6-Bis[bis(4-fluorophenyl)methyl]-4-chlorophenylimino} -3-aryliminobutylnickel(II) bromide complexes: Synthesis, characterization, and investigation of their catalytic behavior

Liu, Qingyun; Zhang, Wenjuan; Jia, Dedong; Hao, Xiang; Redshaw, Carl; Sun, Wen-Hua

Authors

Qingyun Liu

Wenjuan Zhang

Dedong Jia

Xiang Hao

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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 2-{2,6-bis[di(4-fluorophenyl)methyl]-4-chlorophenylimino}-3- aryliminobutane derivatives (L1-L5) and their nickel(II) dibromide complexes (Ni1-Ni5) were synthesized, and all organic compounds were fully characterized by the Fourier transform infrared (FT-IR) and nuclear magnetic resonance (NMR) spectroscopy and by elemental analysis, while the nickel complexes were characterized by FT-IR spectroscopy, elemental analysis, as well as by single-crystal X-ray diffraction for two representative examples, namely Ni1 and Ni4. A distorted tetrahedral geometry was observed for these four-coordinate nickel complexes. Upon the activation with either Methylaluminoxane or modified methylaluminoxane as co-catalyst, all nickel complex precatalysts showed very high activity toward ethylene polymerization with activities of up to 10 7 g(PE)·mol -1 (Ni)·h -1 , and afforded highly branched polyethylene with a bimodal distribution. © 2014 Elsevier B.V.

Journal Article Type Article
Publication Date Apr 5, 2014
Journal Applied catalysis A : general
Print ISSN 0926-860X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 475
Issue April
Pages 195-202
Institution Citation Liu, Q., Zhang, W., Jia, D., Hao, X., Redshaw, C., & Sun, W. (2014). 2-{2,6-Bis[bis(4-fluorophenyl)methyl]-4-chlorophenylimino} -3-aryliminobutylnickel(II) bromide complexes: Synthesis, characterization, and investigation of their catalytic behavior. Applied catalysis. A, General, 475(April), (195-202). doi:10.1016/j.apcata.2014.01.034. ISSN 0926-860X
DOI https://doi.org/10.1016/j.apcata.2014.01.034
Keywords α-Diiminonickel complex, Bulky unsymmetrical 2,3-diiminobutane, Ethylene polymerization, Highly branched polyethylene
Publisher URL http://www.sciencedirect.com/science/article/pii/S0926860X14000404
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: Applied catalysis A : general, 2014, v.475, April.

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Copyright Statement
© 2014, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/





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