(Iminopyridine)Pd (II) complexes as versatile catalysts for copolymerization and terpolymerization of vinyl arene, ethylene, and carbon monoxide

Palladium catalysts modified with iminopyridine ligands were employed for ethylene/CO and styrene/CO copolymerization and ethylene/styrene/CO terpolymerization. Our studies revealed that the steric and electronic effects of the catalysts play key, yet distinct roles in these polymerization reactions. The thermal properties of the polyketones were engineered by varying the styrene content in terpolymers derived from ethylene, styrene, and CO sources, with increased styrene ratios yielding reduced polyketone crystallinity.

Automated summary

Thermal properties of polyketones can be engineered by varying the styrene content in terpolymers derived from ethylene, styrene, and CO sources. Palladium catalysts modified with iminopyridine ligands play key roles in polymerization reactions by showing distinct steric and electronic effects.