Abstract
The applicability of the combined nearly ideal binary solvent/Redlich-Kister (CNIBS/R-K) equation for correlation of various solvatochromic parameters (SP) with composition is shown employing 84 experimental data sets for aqueous and organic binary solvent sy stems at temperatures ranging 15 to 75 oC. The model provides a simple computational model to correlate/predi ct different SP values in various binary solvent systems. In proposed equations, MPDs (mean percentage deviations) are between 0.0500% and 6.9591% in mixtures of dimethyl sulfoxide with 2-methylpropan-2-ol and benzene with 2-methylpropan-2-ol, respectively. Correlation of the calculated and experimental values of various SP give an equation with an overall mean percentage deviation (OMPD) of 1.1900, R 2 = 0.99692, s.e = 0.01223 and F = 341925.51. Approximately 70% of the calculated SP values have IPD (individual per centage deviation) lower than one and it is possible to predict unmeasured SP values by using only eight experimental data.
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