352033-68-2Relevant academic research and scientific papers
Synthesis, characterization and ethylene oligomerization behavior of neutral nickel complexes bearing N-fluorinated phenyl salicylaldiminato chelate ligands
Song, Liping,Song, Shaodi,Huang, Jiling
experimental part, p. 1119 - 1126 (2012/08/08)
A series of neutral nickel complexes featuring N-fluorinated phenyl salicylaldiminato chelate ligands was synthesized, and the novel molecular structure of complex C14 was further confirmed by X-ray crystallographic analysis. The neutral nickel complexes showed high activity up to 9.96×105 g oligomers/(mol NiA·h) and high selectivity of C6 in catalyzing ethylene oligomerization using methylaluminoxane (MAO) as cocatalyst. It was observed that the strong electron-withdrawing effect of the fluorinated salicylaldiminato ligand was able to significantly increase the catalytic activity for oligomerization of ethylene. In addition, the influence of reaction parameters such as Al/Ni molar ratio, reaction temperature, a variety of cocatalyst and ethylene pressure on catalytic activity was investigated.
