DUAL CIRCULAR-POLARIZATION RAMAN OPTICAL-ACTIVITY OF RELATED TERPENE MOLECULES - COMPARISON OF BACKSCATTERING DCPI AND RIGHT-ANGLE ICP SPECTRA

The backscattering in-phase dual circular polarization (DCP1) Raman an d Raman optical activity (ROA) for a series of terpene molecules is re ported. The selected molecules were studied in three groups of closely related structures and correlations between ROA features and structur al elements among molecules within these groups are discussed. One aim of this study was to uncover additional details regarding the sensiti vity of ROA to stereo-structural features in molecules and to elucidat e further the degree of local character of this new stereochemical pro be. Another was to compare the backscattering DCP1 ROA intensities rep orted here with those obtained using depolarized right-angle incident circularly polarized (ICP) ROA for some of the same molecules more tha n a decade ago.