Near-Infrared Studies of the Structure of Water. III. Mixed Solvent Systems

Abstract

The near-infrared absorption of water in the 7000-cm−1 region has been studied for pure water and solutions of water-acetone and water-dioxane between 0 and 80°C. The absorption was resolved into Gaussian components and the component bands were used to calculate the mole fraction of water species with 0, 1, and 2 of the hydrogen atoms involved in hydrogen bonding. The data do not agree with the presence of significant effects due to Fermi resonance. A model of water with three spectroscopically distinct species agrees with the analysis of the bands.