Summary
The group VIB metal carbonyls were found to promote the polycondensation of benzyl halides when induced by heat. Their catalytic activity decreases in the order: Mo ≫ W > Cr. Phosphine ligands attached to the metal poison the catalytic activity of the system. Species such as (CO)3M(PhCH +2 )Cl− are considered to be active in promoting polymerization. The final polybenzyls have a branched, polycondensed structure of moderate molecular weight.
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Tsonis, C.P. Polymerization of benzyl halides catalyzed by VIB metal carbonyls. Polymer Bulletin 9, 349–354 (1983). https://doi.org/10.1007/BF00265312
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DOI: https://doi.org/10.1007/BF00265312