Synthesis, Characterization and Catalytic Activity of Propionamide Complexes of Rare Earth Chlorides

摘要

Propionamide complexes of rare earth chlorides were synthesized. Formula of the complexes is LnCl_3·2PA. The ligand is shown to behave as a normal amide donor with the oxy- gen of the carbonyl group coordinated to the metal ions. Binary system composed of propi- onamide and aluminum alkyl shows higher activity and stereospecificity for butadiene polymer- ization. The cis-1, 4 content of polybutadiene is more than 98/100.