Macromolecular Rapid Communications

Cover image for Vol. 38 Issue 4

Cover Picture: Macromol. Rapid Commun. 18/2004

25_18/2004Cover: 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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