New version of the semiempirical theory of the effect of the dielectric properties of individual solvents on the shift of the absorption spectra of solutions

On the basis of the continuum approximation in the statistical theory of liquids and the physics of liquid dielectrics, a new version is proposed for the semiempirical theory of the effect of the dielectric properties of individual solvents on the position of the absorption spectra of solutions. The indicated theory makes it possible for the fil st time to calculate the values of all the main components of the absolute shift of the spectral bands during the gas-solution phase transition, caused by universal intermolecular repulsive forces, as well as by attractive forces of an orientation, induction, dispersion, and inductive-resonance nature. It is demonstrated that the proposed theory is usable, using as an example the IR spectra of HCl solutions in several nonpolar and polar solvents. (C) 2001 The Optical Society of America.