Molecular and intramolecular interactions in electrical double layer region

Abstract Molecular and intramolecular interactions are investigated very widely by applying various methods. These investigations mainly concern the bulk of a given phrase. In the case of an interface region due to significant short-range ordering molecules are in different state as compared to molecules in the bulk. Hence, different behaviour and interactions of molecules are to be expected. In our investigations the interactions between solvent molecules and ions as well as the intraionic and intramolecular interactions of ions and molecules have been considered at a mercury electrolyte solution interface. The effect was studied of geometric isomerism and intramolecular rotational isomerism of fumarate, maleate, succinate and 1,2-dihalogenoderivates of ethane on solvent structure and electric permittivity at an electrode electrolyte interface. The molecular and intramolecular interactions in the electrical double layer region were investigated using both experimental and theoretical methods. The differential capacities measured by bridge method as a function of applied potential at presence of molecules and ions under investigation, were analysed theoretically. Our investigations lead us to the conclusion that some experimental observations concerning some electrical properties of an interface region can be explained as specific molecular interaction.