Octahedral cobalt(III) complexes in dipolar aprotic solvents. II. Association between cis- and trans-dichlorobisethylenediamine cobalt(III) cations,[Co en₂ Cl₂]⁺, and chloride and bromide ions in the solvents NN-dimethylformamide, dimethyl sulphoxide, and LVN-dimethylacetamide

Abstract

Ion association constants at 30° have been determined for the cis-[Co en, Cl₂]⁺Cl^- ion pair in NN-dimethylformamide (DMF), NN-dimethylacetamide (DMA), and at 20.0°, 25.0°, and 30.0º in dimethyl sulphoxide (DMSO), by a spectrophotometric method. Association constants for the cis-[Co en₂ Cl₂]+Br^- and the trans- [Co en₂ Cl₂]⁺Cl^- ion pairs have also been determined in DMF at 30º.