6533b828fe1ef96bd12879a7
RESEARCH PRODUCT
Enhancing performance of α‐diiminonickel precatalyst for ethylene polymerization by substitution with the 2,4‐bis(4,4'‐dimethoxybenzhydryl)‐6‐methylphenyl group
Yang SunYanping MaZhe FanZhe FanWen-hua SunQiuyue ZhangShi-fang YuanShi-fang YuanZygmunt Flisaksubject
Inorganic Chemistrypolyethylene of generic applicationGroup (periodic table)Ethylene polymerizationChemistrySubstitution (logic)General Chemistrybranched polyethylenenickel(II) complexbis(imino)acenaphthene compoundethylene polymerizationMedicinal chemistrydescription
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 moderate degree of branching. The substituents at the ligands affect the catalytic performance of the nickel complexes and tune the microstructure of the resultant polyethylene.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-06-01 | Applied Organometallic Chemistry |