VIBRATIONAL ASSIGNMENTS OF BANDS RESOLVED BY LOW TEMPERATURE, MATRIX ISOLATION TECHNIQUES

Address of Presser and Wasacz: Mattson Instruments, Inc., 6333 Odana Road, Madison, Wisconsin 53719 Address of Jakobsen: Mattson Institute for Spectroscopic Research, 326 Walhalla Road, Columbus, Ohio 43202Author Institution:In the course of using the Mattson Cryolect to obtain low temperature, matrix isolation reference spectra; it was observed that the combination of the low temperature and the use of the matrix isolation technique resolved an unusually large number of infrared peaks especially in the CH stretching region. This preliminary work describes the efforts to relate this infrared bands to molecular structural features and to determine the nature of the vibrations. Combination and overtone bands as well as crystal field splitting were considered and the relation to structural features was supported by the use of deuterated molecules. This relation to structural feature has demonstrated that the ``extra"" bands produced by this technique can be used to identify structural groups of molecules as well as elucidate molecular geometry