Calculating the Gibbs energy of hydrogen bonding for proton acceptors with a solvent in methanol solutions |
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Authors: | B N Solomonov K V Zaitseva M A Varfolomeev I A Sedov |
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Institution: | 1.A. M. Butlerov Chemical Institute of Kazan State University,Kazan,Russia |
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Abstract: | We propose a method for calculating the Gibbs energies of hydrogen bonding of solutes with associated solvents via the thermodynamic
analysis of experimental values of solvation Gibbs energies. The method is applied to solutions of different proton acceptors
in methanol. It is shown that the contribution of hydrogen bonding processes to the solvation Gibbs energy in methanol is
in most cases very different in magnitude from the formation Gibbs energy of equimolar complexes of the solute and methanol.
We demonstrate the need to include the contributions from solvophobic effects in investigating intermolecular interactions
in associated solvents by means of thermodynamic data. |
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