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

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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.