0000000000624483
AUTHOR
Zhe Fan
Enhancing performance of α‐diiminonickel precatalyst for ethylene polymerization by substitution with the 2,4‐bis(4,4'‐dimethoxybenzhydryl)‐6‐methylphenyl group
High activities in ethylene polymerization predetermine α‐diiminonickel precatalysts for potential industrial applications. In our study, we have synthesized and characterized a series of unsymmetrical 1‐(2,4‐bis(4,4′‐dimethoxybenzhydryl)‐6‐MeC6H2N)‐2‐arylimino‐acenaphthylene nickel(II) halides. The single‐crystal X‐ray diffraction study of representative compounds reveals distorted tetrahedral geometry. On activation with either Me2AlCl or modified methylaluminoxane, these nickel complexes exhibit high activities of the order of 106 g of PE (mol of Ni)−1 h−1 and produce polyethylene of generic application characterized by high molecular weight, narrow molecular weight distribution, and mod…
Enhancing Performance of a Bis(arylimino)pyridine‐Iron Precatalyst for Ethylene Polymerization by Substitution with a 2,4‐Bis(4,4′‐dimethoxybenzhydryl)‐6‐methylphenyl Group
A series of unsymmetrical 2-(2,4-bis(bis(4-methoxyphenyl)methyl)-6-MeC6H2N)-6-(1-(arylimino)ethyl)pyridine-iron halides has been synthesized and characterized. The molecular structure of two representative species was determined by the single-crystal X-ray diffraction. Activated with either MAO or MMAO, the precatalysts displayed high activity, reaching 2.19×107 g PE (mol Fe)−1 h−1 at 60 °C in ethylene polymerization. The microstructural analysis of the polymers obtained indicates highly linear polyethylene containing a vinyl chain end.
CCDC 1979970: Experimental Crystal Structure Determination
Related Article: Shi‐Fang Yuan, Zhe Fan, Qiuyue Zhang, Zygmunt Flisak, Yanping Ma, Yang Sun, Wen‐Hua Sun|2020|Appl.Organomet.Chem.|34 |e5638|doi:10.1002/aoc.5638
CCDC 2063053: Experimental Crystal Structure Determination
Related Article: Shi‐Fang Yuan, Zhe Fan, Mingyang Han, Yi Yan, Zygmunt Flisak, Yanping Ma, Tongling Liang, Wen‐Hua Sun|2021|Eur.J.Inorg.Chem.|2021|1571|doi:10.1002/ejic.202100145
CCDC 1979969: Experimental Crystal Structure Determination
Related Article: Shi‐Fang Yuan, Zhe Fan, Qiuyue Zhang, Zygmunt Flisak, Yanping Ma, Yang Sun, Wen‐Hua Sun|2020|Appl.Organomet.Chem.|34 |e5638|doi:10.1002/aoc.5638
CCDC 2063054: Experimental Crystal Structure Determination
Related Article: Shi‐Fang Yuan, Zhe Fan, Mingyang Han, Yi Yan, Zygmunt Flisak, Yanping Ma, Tongling Liang, Wen‐Hua Sun|2021|Eur.J.Inorg.Chem.|2021|1571|doi:10.1002/ejic.202100145