Knowledge Bank

High resolution near infrared spectra have been recorded for a number of binary complexes using laser-molecular beam methods. Several of these spectra show perturbations resulting from either Coriolis or anharmonic coupling between the state of interest and other (nearly degenerate) vibrational states of the molecule. Examples of these will be show for ($N2O)2,OC-HF,NCCN-HF$ and $(HCN)2$. Several interesting correlations between the strength of the coupling and the width of the observed transitions (due to vibrational relaxation) will be discussed.