Abstract
Hydrogen bonding between a number of para-substituted phenols and nitriles was studied by means of infrared spectroscopy using a longer cell. Thermodynamic quantities were determined and found to be the functions of the electronegativity and inductive effect of the phenol and nitrile substituents respectively except for the complexes of t-butyl cyanide for which the −ΔH values were lower than expected. Some correlations among thermodynamic quantities were also established. Both the sample and the reference cells were heated simultaneously by means of a special heating arrangement which minimized the base line errors and made the intensity measurements more accurate.

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