| Abstract: | Polymerization of 1-chloro-2-phenylacetylene was effected by the catalyst formed by UV irradiation of Mo(CO)6 in carbon tetrachloride to provide in high yield a polymer whose weight-average molecular weight reached 2 × 106. UV irradiation and an appropriate halogenated hydrocarbon were essential for the formation of active species. The formation of a metal carbene as active species was inferred. Poly(1-chloro-2-phenylacetylene) was a light-yellow solid having the structure $ \rlap{--} ({\rm CCl\dbondCPh\rlap{--} )}_n $ . The polymer was soluble in aromatic and halogenated hydrocarbons, and a film could be formed from polymer solution. |
