Dication siloxonium

Molecules with two or more cationic active centres are very useful for certain macromolecular syntheses. The first dicationic initiator was used in our laboratory [251-253]. It is formed by hydrolysis and condensation of dimethyldichlorosilane in the presence of a strong acid, e. g. HC104. The condensation is an equilibrium process. When its volatile products are removed by evacuation, a siloxonium dication is finally formed. 

We have observed a reduction in the rate of trioxane polymerization initiated by the siloxonium dication (di-ion pair)... 

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See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

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