In contrast to a large amount of information available for dialkyl sulfur (II1) radicals'" in water, physicochemical data on corresponding diaryl species are lacking. This is also true in the case of the selenides/selenoxides and telluride/telluroxides. The present work is an attempt at remedying this flaw by providing basic physicochemical data for diaryl sulfides, selenides and tellurides and their corresponding oxides. The experimental method of choice is pulse ...