Abstract
Cover: The cover picture summarizes the copolymerization mechanism of ethylene and 1,7‐octadiene (OD) with a constrained‐geometry catalyst 1. The inserted OD unit formed unexpected 1,5‐cyclononane units as well as 1,3‐cycloheptane units in the main chain of polyethylene. This characteristic cyclononane cyclic unit would be derived from a unique OD cyclization insertion mode: cyclization insertion of the OD unit in the penultimate position after a single ethylene insertion step.Further details can be found in the Communication by N. Naga* and A. Toyota on page 1623.
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