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合成了2个含吡啶亚甲基修饰芴配体的二价稀土金属有机配合物[η5∶η1-(C5H4NCH2C13H8)]2LnⅡ[Ln=Yb(1),Eu(2)],发现其对甲基丙烯酸甲酯聚合具有高的催化活性。研究了配合物1,2作为单一组分催化剂催化甲基丙烯酸甲酯聚合的性能,结果表明,温度、溶剂、催化剂和单体的物质的量比对催化剂的活性、聚合物分子量的分布及规整度有明显影响。
Two divalent rare earth metal complexes [η5: η1- (C5H4NCH2C13H8)] 2LnⅡ [Ln = Yb (1), Eu (2)] containing pyridylmethylene modified fluorene ligand were synthesized. Methyl acrylate polymerization has high catalytic activity. The performance of the complex 1, 2 as a single component catalyst for the polymerization of methyl methacrylate was studied. The results show that the ratio of the temperature, solvent, catalyst and monomer content to the catalyst activity, polymer molecular weight distribution and regularity Degree has a significant effect.