Anomalies in vibrational spectra of hydrides of the VA group elements in the condensed state

The results of a study of vibrational spectra of volatile hydrides of the VA group elements of periods 2-4 in the liquid state and in solutions of liquefied noble gases have been generalized and analyzed over wide frequency and temperature ranges. A number of anomalies have been revealed in the Spectra of these hydrides that manifest themselves through an unusual behaviour of band intensities of basic, composite vibrations and overtones on a transition from the gas phase to the condensed state, and dependences of spectroscopic and dynamic parameters as well as a non-coincidence of the line maxima in isotropic and anisotropic Raman spectra (delta (nu)=nu (aniso)-nu (iso)) on the temperature of liquid hydrides. Mechanisms of intermolecular interactions in these liquids are discussed with the use of the as-obtained data on the intensity, frequency and shape of vibrational band contours.