Journal of Atomic, Molecular, and Optical Physics
Volume 2012 (2012), Article ID 217932, 10 pages
Review Article

Proton Transfer Equilibria and Critical Behavior of H-Bonding

Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland

Received 23 February 2012; Revised 25 April 2012; Accepted 26 April 2012

Academic Editor: Marek J. Wojcik

Copyright © 2012 L. Sobczyk et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The aim of the present paper is an analysis of the hydrogen bond properties for the acid-base systems depending on the ability to the proton transfer in the formulation of the Brรถnsted approach. After definition of the proton transfer equilibrium expressed by using the equation log๐พPT=๐œ‰ฮ”๐‘๐พ๐‘, various examples of different physical properties, such as dipole moments, IR spectra, and nuclear magnetic resonances, are presented which correlate with the ฮ”๐‘๐พ๐‘ value. In such a way, a critical state of hydrogen bonding can be defined that corresponds to the potential of the proton motion for either single minimum or double minimum with low barrier. A particular attention in this paper found electronic spectra which have not been analysed so far and the quantitative analysis of the vibrational polarizability which can reach very high values of the order of electronic polarizability.