Abstract
Abstract The electrical conductivity of aqueous solutions of four chosen derivatives of 2-hydroxy-3-(9-oxo-9-H-thioxanthene-yloxy)-N,N,N-trimethyl-1-propanium chloride has been measured and analysed using the Fuoss-Justice equation. The changes of the equilibrium constants of ion-pair formation, K A , the limiting molar conductances and the Bjerrum's parameters–q of the closest approach in ion pairs have been compared for all studied compounds and the most probable conformational structures have been suggested for them in their aqueous solutions. These results have been supplemented by the analysis of 1H NMR Spectra of all four studied compounds dissolved in C2D5OD.
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