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 -- ( CCl-- )ₙ . The polymer was soluble in aromatic and halogenated hydrocarbons, and a film could be formed from polymer solution.
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Masuda et al. (1982) studied this question.
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