Infra-red spectroscopic studies of the bending modes of water. Detection of 1:1 and 1:2 complexes in organic solutions

Abstract

We have analyzed the ν₂ vibration of H₂O dissolved in organic solvents over the whole concentration range. For water dissolved in small amounts in some basic solvents, the band is asymmetric or split. A study of ternary mixtures and a temperature effect allow the assignment of the two components to the bending vibration of 1:1 and 1:2 water–basic solvent complexes. The ν₂ region is very useful for the observation of the 1:1 complexes.