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

Wenbin Chai, Jiangang Yu, Lin Wang, Xinquan Hu, Carl Redshaw, Wen-Hua Sun

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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 × 106 g mol-1 h-1) for ethylene oligomerization, with good thermal stability at 80 °C 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.
Original languageEnglish
Pages (from-to)21-26
Number of pages6
JournalInorganica Chimica Acta
Publication statusPublished - 30 Apr 2012

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