Figure 3.

Alternating ring-opening metathesis polymerization (AROMP) of monomers 4 and 6. The region of ¹H NMR spectra in which backbone olefinic hydrogen resonances of poly(4-alt-6)_n appear is shown. (a) Polymer product prepared from cyclohexene and dissolved in CDCl₃. The ratio of H1:H3:H4 is 1:1:1. (b) Polymer product prepared from cyclohexene-d₁₀ and dissolved in CD₂Cl₂. The ratio of H1:H3:H4 is 0:1:0. poly(4-alt-6-d₁₀)_n was dissolved in CD₂Cl₂ instead of CDCl₃ to allow accurate integration of the phenyl resonances.