Integrated intensities of OH vibrational overtones in alcohols

Intensities for several OH vibrational overtone bands have been measured for vapor-phase methanol, ethanol, and isopropanol. The trends in the intensities as a function of excitation level have been modeled by two empirical approaches, yielding intensity predictions for the higher overtone transitions, up to 7ν(OH). These methods were also applied to recent HNO3 overtone measurements, resulting in new intensity predictions for higher, photochemically active overtone bands, which are compared with ab initio estimates.