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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
Author(s) -
Yuan ShiFang,
Fan Zhe,
Han Mingyang,
Yan Yi,
Flisak Zygmunt,
Ma Yanping,
Liang Tongling,
Sun WenHua
Publication year - 2021
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202100145
Subject(s) - chemistry , pyridine , ethylene , polymerization , polymer chemistry , halide , polyethylene , crystal structure , polymer , catalysis , medicinal chemistry , organic chemistry
A series of unsymmetrical 2‐(2,4‐bis(bis(4‐methoxyphenyl)methyl)‐6‐MeC 6 H 2 N)‐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 2.19×10 7 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.