Absolute Infrared Intensities of Binary Mixtures of Liquid Chlorobenzene and Toluene

Abstract

Absolute infrared intensities of binary mixtures of liquid chlorobenzene and toluene were determined from transmission measurements. In general, the integrated intensities between isosbestic points of the alpha(m) '' spectra were linear with respect to the mole fraction of the pure components. The alpha(m) '' spectra of the pure liquids were curve-fitted with bands of classical damped harmonic oscillator shape. For most fundamentals, the experimental spectra of the mixtures and synthetic spectra obtained by mixing data from the fitted bands of the pure components agreed to within 2-4%. Larger deviations (7-15%) occurred for some of the bands, indicating molecular interaction between chlorobenzene and toluene.