A novel catalyst (AMDA)ZnOAc was firstly prepared and applied to catalyze the copolymerization of carbon dioxide and cyclohexene oxide, showing efficiency as high as 3.84x10(4)g polymer/mol. The resulting polycarbonate was found not to consist of cyclohexene carbonate by-product and possess a glass transition temperature of 120degreesC and a temperature of thermal decomposition up to 5wt% of 177degreesC and that up to 50wt% of 273degreesC respectively.