Synthesis of palladium complexes with quinolino-based tridentate ligands and their applications for norbornene polymerization

Palladium complexes bearing new tridentate quinolino-based [N − NN ox ] ligands were synthesized and tested for the polymerization of norbornene. Upon activation of MAO, all the palladium complexes showed high catalytic activities for the vinyl-addition polymerization of norbornene up to 11.5 × 10 6 g of PNB (mol of Pd) −1 h −1 . The structure–activity relationships in the polymerization of norbornene, namely steric and electric effects of the ligands, were carefully investigated.