Asymmetric Copolymerization of CO2 with meso-Epoxides Mediated by Dinuclear Cobalt(III) Complexes: Unprecedented Enantioselectivity and Activity


  • Gratitude is expressed to the National Natural Science Foundation of China (NSFC, Grant 21134002, 21104007), and National Basic Research Program of China (973 Program: 2009CB825300). X.-B. Lu gratefully acknowledges the Chang Jiang Scholars Program (T2011056) from the Ministry of Education of the People’s Republic of China. We are also grateful to Prof. Cheng He and Dr. Haiyan An for their kind assistance in X-ray crystallographic analysis.


original image

Unprecedented enantioselectivity and catalytic activity was observed in the asymmetric copolymerization of CO2 with meso-epoxides (including the less reactive cyclopentene oxide) mediated by the dinuclear CoIII complex (S,S,S,S)-1 under mild conditions. The resultant copolymers possess more than 99 % carbonate linkages and a perfectly isotactic structure.