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Solute water interactions in the organic-phase of a biphasic system.2. effects of organic-phase and temperature on the water-dragging effect

Fan, W. Z.
Tsai, Ruey-Shiuan
el Tayar, Nabil
Testa, Bernard
Published in Journal of Physical Chemistry. 1994, vol. 98, no. 1, p. 329-333
Abstract The ''water-dragging'' effect of various solutes was investigated in biphasic systems made of water and poorly hydrated solvents, namely 6-undecanone, chloroform, and halothane. Like in the di-n-butylether/water system,1 the ''water-dragging'' effect is primarily determined by the H-bond-donor acidity of solutes, while the chemical nature of the organic solvent (provided it is a poorly hydrated one) plays a limited role only. A molecular interpretation is offered whereby the predominant influence of the H-bond-donor acidity of amphiprotic solutes (A) is due to their propensity to form cyclic hydrates of the type A2W and AW2 (W = H2O)
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Deposited on : 2010-08-06

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