A Zn-Based Coordination Polymer with Homogeneous Catalyst Properties for Efficient CO2 Fixation

The development of efficient catalysts for the catalyticconversionof CO2 is extremely important in the process of CO2 chemistry. In this work, a Zn-based coordination polymer(ZnBr2-CP) was synthesized from a tridentate pyridine ligandbearing an imidazolium salt ligated with ZnBr2. It possessesnot only the high activity of homogeneous catalysts but also the recoverablefeatures of heterogeneous catalysts. More importantly, configureddouble active sites allow the catalyst ZnBr2-CP to exhibitexcellent activity in the cycloaddition of CO2 with epoxidesunder solvent- and co-catalyst-free conditions, achieving yields ashigh as 99% for a variety of cyclic carbonates at 80 & DEG;C for 24h. This study provides insight into the design of efficient catalystsfor conversion of CO2.