Infrared Studies of Hydrogen Bonding in Pure Liquids and Solutions

Abstract

While many properties of nonpolar or weakly polar substances can be arranged according to the critical temperature T _c or the molecular weight M,⁽⁸⁹⁶⁾ the properties of a series of strongly polar substances cannot be derived from the molecular weight or from the dipole moment µ (serving as a measure of polarity). A comparison of H₂S with H₂O illustrates this situation. The special interaction that comes into play in these substances is referred to as “hydrogen bonding” because it is found only in proton-containing substances.