Fig. 1: The ROCOP of epoxides and carbon dioxide.
From: Understanding low-pressure CO2 insertion chemistry in epoxide–CO2 copolymerization catalysis

a, ROCOP of epoxides and CO2 with the two most commonly studied epoxides: propene oxide (PO) and cyclohexene oxide (CHO). b, The proposed catalytic cycle for a high-performance Co(III)K(I) catalyst. The CO2 insertion is proposed as an equilibrium and incorporated into the rate law13.