Enantioselective Ion-Association Mode between the Tris(ethylenediamine)cobalt(III) Cation and the Bis(μ-(−)589-2,3-dimethyltartrato)diantimonate(III) Anion in Solution

Abstract
By analyzing the intensity changes in the circular dichroism spectra, the association constants of the Λ-and Δ-[Co(en)3]3+ ions with the bis(μ-(−)589-2,3-dimethyltartrato)diantimonate(III) ion were determined to be 58.4±1.9 and 38.6±0.4 respectively in H2O (mol−1 dm3 at 25°C and μ=0.1 (NaClO4)). Based on these data together with the chromatographic data, the enantioselective association mode was discussed.