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. Issue 16 (7th April 2021)

• Record Type: Journal Article
• Authors: Yuan, Shi‐Fang; Fan, Zhe; Han, Mingyang; Yan, Yi; Flisak, Zygmunt; Ma, Yanping; Liang, Tongling; Sun, Wen‐Hua
• Is Part Of: European journal of inorganic chemistry. Issue 16(2021)
• Page Start: 1571
• Page End: 1580
• Publication Date: 2021-04-07
• Subjects: Iron(II) -- Ethylene polymerization -- Precatalysts -- Vinyl polyethylene; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.202100145
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: A series of unsymmetrical 2‐(2, 4‐bis(bis(4‐methoxyphenyl)methyl)‐6‐MeC6 H2 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. Abstract : The 2, 4‐bis(4, 4′‐dimethoxybenzhydryl)‐6‐methylphenyl‐modified bis(arylimino)‐ pyridine‐iron precatalysts exhibit extremely high activities in ethylene polymerization producing highly linear polyethylenes of high molecular weight.