Living polymerization of α-olefins at elevated temperatures catalyzed by a highly active and robust cyclophane-based nickel catalyst

The living polymerization of α-Olefins at elevated temperatures, which were catalyzed by active cyclophane-based nickel catalyst was analyzed. The living polymerizations of propylene and 1-hexene were achieved at 50-75°C by using Ni II-α-diimine catalyst (catalyst 2). It was observed that catalyst 2 exhibited improved stability and living polymerization nature for α-olefin polymerization at elevated temperatures. It was also observed that as compared to the acyclic catalyst,1, the cyclophane catalyst 2 also afforded different microstructures.