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A typical low-strain monomer, cyclooctene, was polymerized via ring-opening metathesis polymerization with electrochemically produced active species. The structural properties of the polyoctenamer were determined by NMR, gel-permeation chromatography and differential scanning calorimetry. Analysis of the polyoctenamer microstructure by 1 H and 13 C NMR spectroscopy indicates that the polymer contains a highly cis stereoconfiguration of the double bonds (σ c = 0.75). The resulting polymer is of low molecular weight and has a reasonably broad molecular weight distribution (M w = 18 000, PDI = 1.9). The glass transition temperature and melting point of the polyoctenamer are −11.3 • C and 36.5 • C respectively.

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The ring-opening metathesis polymerization of cyclododecene using an electrochemically reduced tungsten-based catalyst (WCl 6 -e − -Al-CH 2 Cl 2 ) is described. In addition, the influence of reaction conditions on the polymerization yield was determined. The resulting polymer has been characterized by NMR, IR, gel permeation chromatography and differential scanning calorimetry. The glass transition temperature and melting point of the polydodecenamer are 19.6 • C and 70.0 • C respectively. Furthermore, cyclododecene has been polymerized into a low-molecular-weight polymer (12.0 × 10 3 ) with a polydispersity of 2.06 in high yields (94%). IR and NMR analysis indicate that the polydodecenamer has a high trans content (60%).