Ionic solvation in water–Co-solvent mixtures. Part 18.—Free energies of transfer of single ions from water into water–2-methoxyethanol mixtures

Kinetics of solvolysis of trans‐dichlorotetra (t‐butylpyridine)‐cobalt(III) ions in mixtures of water with ethane‐1,2‐diol and with 2‐methoxyethanol. A contrast with the effect of hydrophobic co‐solvents

“…AG;(i) for all simple cations in these mixtures are negative for x2 < 0.25 [26,29,30], suggesting that -AG,0(Co(4-t-Bupy)4C12+*) > -AG;(Co(4-t-Bupy)4Cl; ). However, should AGf(Co(4-t-B~py)~Cl,') be positive at low x2 in these mixtures, AG,O(Co(4-t-Bupy)4Cl2'*) will be either negative or less positive.…”

Gibbs energies of transfer of the proton from water into mixtures of water with chain multiple ethers: Equilibria involving changes of solvation of the proton

“…When DG o t (H + ) (kJ mol À1 ) is compared for the following co-solvents for x 2 $ 0.11 at 25 C, CH 3 CH 2 OH (À6.0), 28 HOCH 2 CH 2 OH (À1.3), 29 CH 3 OCH 2 CH 2 OH (À6.4), 30 CH 3 CH 2 OCH 2 CH 2 OH (À10.0), 25 the destabilising effect of an additional OH is first noted for the mixture over water, followed by a recovery as one OH is converted to -CH 2 -O-CH 2 -. A further increase in the stability of H + in the mixture relative to that in water occurs as the alkyl group is increased in CH 3 CH 2 -O-CH 2 -.…”