Journal of Solution Chemistry

, Volume 21, Issue 12, pp 1217–1230 | Cite as

The structuredness of solvents

  • Yizhak Marcus


The parameterization of the structuredness of a solvent as the difference between its molar heat of vaporization, Δvap H ° and the sum of its internal donor-acceptor interactions (in terms of DN and AN) and its vdW interactions (in terms of Δvap H ° of n-alkanes of the same molar volume) is criticized. As an alternative, the excess of the reduced Trouton constant, ΔvapS°/R over 12 and of Kirkwood's dipole correlation parameter g over 1.7 are suggested as criteria for the decision of whether a solvent is structured, both having to be met. Conversely, if either ΔvapS°/R is less than 11.6 or g is less than 1.3, then the solvent is to be considered unstructured. Exceptions are discussed.

Key Words

Structuredness Trouton's constant Kirkwood'sg factor solvent parameters 


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  1. 1.
    H. Ohtaki,J. Solution Chem. 21, 39 (1992).CrossRefGoogle Scholar
  2. 2.
    Y. Marcus,Ion Solvation (Wiley, Chichester, (UK), 1985), pp. 146–149.Google Scholar
  3. 3.
    V. Gutmann,Electrochim. Acta 21, 661 (1976).CrossRefGoogle Scholar
  4. 4.
    H. P. Bennetto and E. F. Caldin,J. Chem. Soc. A 2191 (1971).Google Scholar
  5. 5.
    R. H. Cole,J. Chem. Phys. 27, 33 (1957).CrossRefGoogle Scholar
  6. 6.
    DIPPR (Design Institute of Physical Property Data), (Technical Database Services, New York, 1988).Google Scholar
  7. 7.
    J. A. Riddick, W. B. Bunger, and T. K. Sakano,Organic Solvents, 4th edn., (Wiley, New York, 1986).Google Scholar

Copyright information

© Plenum Publishing Corporation 1992

Authors and Affiliations

  • Yizhak Marcus
    • 1
  1. 1.Department of Inorganic and Analytical ChemistryThe Hebrew University of JerusalemJerusalemIsrael

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