IUPAC > Gold Book > alphabetical index > S > solvophobicity parameter, Sp


solvophobicity parameter, Sp

A solvent parameter defined by:
Sp = 1 − M M hexadecane
derived from the Gibbs energy of transfer (Δ t G °) of a series of solutes from water to numerous aqueous-organic mixtures and to pure solvents:
Δ t G ° to solvent = M R T + D
where R T is a solute parameter, and M and D characterize the solvent. The M values are used to define a solvent solvophobic effect so that S p values are scaled from unity (water) to zero (hexadecane).
PAC, 1994, 66, 1077 (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1165
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.S05763.
Original PDF version: http://www.iupac.org/goldbook/S05763.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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