ABRAHAM MODEL CORRELATIONS FOR PREDICTING GAS-TO-LIQUID PARTITION COEFFICIENTS AND ACTIVITY COEFFICIENTS OF ORGANIC SOLUTES DISSOLVED IN 1-(2-METHOXYETHYL)-1-METHYLPYRROLIDINIUM tris(PENTAFLUOROETHYL)TRIFLUOROPHOSPHATE

Rui Jiang, Jared L. Anderson, Timothy W. Stephens, William E. Acree, Jr., Michael H. Abraham

Abstract


Chromatographic retention factors were measured for 45 different organic solutes of varying polarity and hydrogen-bonding capability on an anhydrous 1-(2-methoxyethyl)-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate, ([MeoeMPyrr]+[FAP]), stationary phase at both 323 K and 353 K. The experimental retention factor data were combined with recently published thermodynamic data for solutes dissolved in ([MeoeMPyrr]+[FAP]) to give the corresponding gas-to-liquid partition coefficients (log K). The water-to-anhydrous ([MeoeMPyrr]+[FAP]) partition coefficients (log P) were also calculated using published gas-to-water partition coefficient data for the solutes studied. The derived partition coefficients were analyzed in analyzed in accordance with the Abraham model. The Abraham model expressions that were obtained in the present study back-calculate the observed 105 log K and 104 log P values to within a standard deviation of 0.14 and 0.16 log units, respectively.

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DOI: http://dx.doi.org/10.17628/ecb.2013.2.741-751

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