Standard Gibbs energies of transfer of halogenate and pseudohalogenate ions, halogen substituted acetates, and cycloalkyl carboxylate anions at the water|nitrobenzene interface

The previously introduced three-phase electrode technique was used to determine the Gibbs energies of transfer of ClO3−, BrO3−, IO3−, IO4−, OCN−, SeCN−, CN−, N3−, halogen substituted acetate anions Z3−nCHnCOO− (Z = F,Cl,Br,I), and cycloalkyl carboxylate anions ((CH2)nCOO−, n = 3,…,7) at the water|nitrobenzene interface. Whereas the data for the small inorganic ions can easily be understood in terms of ion-dipole interactions, the data of the organic ions need consideration of charge delocalisation and its effect on the enthalpy and entropy of solvation.