Beschreibung:
<jats:p>
Between dipolar aprotic solvents S
<jats:sub>1</jats:sub>
and S
<jats:sub>2</jats:sub>
, the transfer activity coefficients,
<jats:sup>
S
<jats:sub>1</jats:sub>
</jats:sup>
γ
<jats:sup>
S
<jats:sub>2</jats:sub>
</jats:sup>
, of complexed sodium, potassium, thallium(I), and silver ions with cryptand 2.2.2 have been found to be equal to that of the cryptand. With reference to methanol (S
<jats:sub>1</jats:sub>
), this equality does not hold, the cryptates being more or less solvated by hydrogen bonding in this solvent. In water as a solvent, the cryptates are on a considerably higher level of free energy than in the organic solvents. This is attributed to hydrophobic hydration of the cryptates.
</jats:p>