Highly resolved spectra of local modes of benzene

Publisher Website
Google Scholar
Abstract
Rotational cooling by supersonic expansion and laser labeling spectroscopy were used to obtain high-resolution fundamental and first- and second-overtone spectra of C-H stretches of benzene in a molecular beam. Rich fine structure in the spectra has been observed. Transformation from the ‘‘normal-mode’’ picture to the ‘‘local-mode’’ picture seems to occur between v=2 and v=3. Vibrational lifetimes in local-mode bands exceed ≃0.5 psec.