No abstract

Containing -OH groups with non-participant electrons, water and primary alcohols, form clusters by hydrogen bonds. Mixtures of water and ethanol and their ternary solutions containing small amounts of a spectrally active substance were studied by ultrasound techniques in order to determine the coefficient of adiabatic compressibility considered as being an indicator of the strength of intermolecular interactions in hydroxy liquids. A linear dependence between the adiabatic compressibility of solution and the wavenumber in the maximum of the solute electronic absorption band was evidenced in our experiments.

Using the HyperChem programme, the influence of water on the properties of some monosubstituted aromatic compounds was studied from the point of view of the intermolecular interactions. There have been estimated some physico-chemical parameters of the benzene, fluorobenzene, chlorobenzene, bromobenzene, iodobenzene, nitrobenzene, phenol and aniline when solved in water, surrounded by one or two solvation spheres. The boundary lengths, total energies, border levels energy, dipole moments, polarizabilities, wavelengths and the probabilities of the electronic transitions have been obtained.