Synthesis, characterization and ethylene oligomerization behavior of N-(2-alkyl-5,6,7-trihydroquinolin-8-ylidene)arylaminonickel(II) dichlorides

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• 作者：Wenbin Chai^a ; ^b ; Jiangang Yu^b ; Lin Wang^b ; Xinquan Hu^a ; ^{xinquan@zjut.edu.cn} ; Carl Redshaw^c ; ^{Carl.Redshaw@uea.ac.uk} ; Wen-Hua Sun^b ; ^{whsun@iccas.ac.cn}
• 关键词：N-(2-Alkyl-5 ; 6 ; 7-trihydroquinolin-8-ylidene)arylamine ; Nickel(II) complex ; Ethylene oligomerization
• 刊名：Inorganica Chimica Acta
• 出版年：2012
• 出版时间：30 April, 2012
• 年：2012
• 卷：385
• 期：Complete
• 页码：21-26
• 全文大小：387 K

文摘

A series of N-(2-alkyl-5,6,7-trihydroquinolin-8-ylidene)arylaminonickel(II) dichloride complexes were synthesized in a one-pot reaction with nickel dichloride. All nickel complexes were characterized by elemental and spectroscopic analysis. The molecular structures of representative nickel complexes, as determined by the single crystal X-ray diffraction, are reported. All nickel complexes, when treated with ethylaluminium sesquichloride (Et₃Al₂Cl₃), showed high activities (up to 1.1 ¡Á 10⁶ g mol^? h^?) for ethylene oligomerization, with good thermal stability at 80 ¡ãC at 10 atm ethylene. The influence of the reaction parameters on the catalytic behavior was investigated for these nickel-based systems, including variation of Al/Ni molar ratio and reaction temperature.