Study on Divalent Organolanthanide Catalysts for Styrene Polymerization——Catalytic Activity Affected by the Substituent on the Cyclopentadienyl Ring

Divalent organosamarium and organoytterbium complexes as a kind of strong reducing agent not only can react with electron rich agents such as halides, aldehyde, ketone, unsaturated hydrocarbon and the compounds containing active hydrogen but also can catalyze hydrogenation of alkyne, ethylene polymerization and methyl methacrylate polymerization. More and more interests and attention have been given to the synthesis, structure and catalytic activity of divalent organolanthanide complexes in recent years, but