Solubilities and Transfer Chemical Potentials for Cobalt(III) Complexes in t-butanol– i-propanol–, and ethanol–water Mixtures

Abstract

Solubilities in t-BuOH-, i-PrOH-, and EtOH-H 2 O mixtures at 298.2 K are reported for a number of salts of monoand bi-nuclear cobalt(III) complexes. From these solubilities and published single ion transfer chemical potentials, on the TATB (Ph 4 As þ BPh À 4 ) assumption, transfer chemical potentials have been derived for most of these cobalt(III) complexes. The results and trends are discussed in relation to those for other ions and complexes. Effects of ligand nature for transfer to t-BuOH-H 2 O mixtures are detailed and, for a selection of complexes, trends for transfer of a given complex to t-BuOH-, i-PrOH-, EtOH-, and MeOH-H 2 O mixtures are compared.