Vibrational Assignments and Analysis for 2-Benzimidazole Thione

Abstract

The Laser Raman and FTIR Spectra of 2-benizimidazole thione have been recorded in the region 4000-100 cm^-1. The observed frequencies were assigned to different modes of vibrations on the basis of fundamental, combination and overtones and normal coordinate analysis assuming C_s point group symmetry. The potential energy distributions (PEDs) associated with each vibrational type is also reported. Further, based on the present assignments, a complete vibrational analysis was carried out for this compounds. The results are briefly discussed.