When tetraanisylethylene (I) interacted with various electron acceptors, a characteristic blue (Amax around 575 m, u) solution was usually observed. M or less) of this blue complex gradually turned yellow (A, around 490 mp), The yellow absorbing species in these solutions has been identified as trianisylmethylcarbonium ion (11) on the basis of its visible absorption spectrum. A [) of I in ethylene chloride was allowed to react with an equimolar ...
