Access to highly active and thermally stable iron procatalysts using bulky 2-[1-(2,6-dibenzhydryl-4-methylphenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridine ligands

Jiangang Yu; Hao Liu; Wenjuan Zhang; Xiang Hao; Wen-Hua Sun

doi:10.1039/c0cc05373b

Access to highly active and thermally stable iron procatalysts using bulky 2-[1-(2,6-dibenzhydryl-4-methylphenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridine ligands

Chem Commun (Camb). 2011 Mar 21;47(11):3257-9. doi: 10.1039/c0cc05373b. Epub 2011 Jan 31.

Authors

Jiangang Yu¹, Hao Liu, Wenjuan Zhang, Xiang Hao, Wen-Hua Sun

Affiliation

¹ Key Laboratory of Engineering Plastics and Beijing Natural Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.

PMID: 21279230
DOI: 10.1039/c0cc05373b

Abstract

Ethylene polymerization was performed using a series of 2-[1-(2,6-dibenzhydrylphenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridyliron(II) chlorides with the activity in the range of 10(7) g PE mol(-1) (Fe) h(-1), which is the highest observed in iron procatalysts at elevated reaction temperatures such as 80 °C in the presence of MMAO and 60 °C in the presence of MAO, without any trace of ethylene oligomerization.