Study of Tetraethylammonium and Lithium Chlorides Dissociation in Acetonitrile Solutions

Solutions of tetraethylammonium and lithium chlorides in acetonitrile were studied by electronic absorption spectroscopy. It was shown that at concentrations up to 100 mmol/L tetraethylammonium chloride completely dissociates. The association constant of lithium chloride in acetonitrile (Kass = 4800 mol–1 L) was determined by the spectrophotometric method. The electronic absorption spectra of the Li+Cl– ionic pair and Cl– anion in acetonitrile were studied.