Zur Beeinflussung des Ionisations‐Dissoziationsgleichgewichtes von Tritylhalogenidlösungen in Methylenchlorid bei Zugabe von Styren

Abstract

Influence of Styren Addition on the Ionization‐Dissociation Equilibrium of Trityl Halides in Methylene DichlorideThe ionization‐dissociation equilibrium in solutions of trityl halides in methylene dichloride is effected by the addition of π‐donors as a function of the temperature. The intensity of the trityl absorption of trityl fluoride and trityl chloride is decreased as it can be shown by u.v.‐spectroscopy. The trityl absorption of trityl bromide solutions in methylene dichloride is very sensitive towards temperature changes. Measurements of the equilibrium constants for the ionization ‐ dissociation‐equilibrium, when styrene is added to the solution, indicate a specific solvation effect by the styrene molecules, however, a stabilization of ion pairs by specific solvation due to styrene molecules does not occur.