The oxidative dimerization of aryl methanes in organic solvents by using alkaline catalysts is an important way to prepare diphenyl ethanes and diphenyl ethylenes.

Symmetrical or unsymmetrical aryl selenides have been prepared by the reaction of arylselenotrimethylsilanes with diaryliodonium salts in DMF.

The reaction conditions, the spectrophotometric characteristics, and the analytical properties of the ion-association complex of 〔I 2Br〕 - with the basic triarylmethane dye such as ethyl violet (EV), crystal violet (CV), and victoria blue 4R (VB4R) in the presence of polyvinyl alcohol (PVA) were studied.