Study of solvation interaction in ethanol + octan-1-ol mixture

Department of Chemistry, Burdwan University, Burdwan-713 104, India E-mail: bsanjibb@yahoo.com Manuscript received 20 September 2002 Solvation characteristic of 2,6-diphenyl-4-(2,4,6-triphenyl)-1-pyridinium phenolate, the indicator solute for the ET (30) scale of solvent polarity, has been studied as a function of solvent composition in the temperature range 293-313 K by monitoring the solvatochromic charge transfer band of the solute. The results, indicating preferential solvation of the solute by ethanol, have been analyzed in terms of a suitable model to get information about solute-solvent and solvent-solvent interaction. Viscosity and density of the solvent mixture as a function of solvent composition have been determined in the temperature range 283-313 K and the extent of non-ideality has also been estimated. It appears that the two procedures provide similar information about the nature of mutual interaction between the solvent molecules