Polarization sensitive cars spectroscopy and conformational analysis of organic molecules in liquids

Abstract

The paper presents the results of experimental investigations of a series of conformationally inhomogeneous compounds with polarization sensitive coherent active (anti-Stoxes) Raman scattering spectroscopy (PS CARS). Interpretation of vibrational spectra are refined and spectroscopic parameters are determined of resonances of complex spectral band of n-penthane (bands at 868 and 841 cm-1), 5,5-dimethil, 2-ethinyle, 1,2-dioxane (bands at 949 and 910 cm-1) which were not resolved previously with use of spontaneous Raman scattering spectroscopy (SRS). On the basis of the conformational analysis of thio- and selenanisole by the PS CARS method, it was concluded that molecules involved exist predominantly in one isomeric form. Thereby the principle of holographic spectroscopic was realized and tested in the full scale. © 1992.