Abstract
Experimentally determined partition coefficients for DMMP between NaCl-saturated water and 20 solvents were correlated using the solvatochromic parameters α, β, and π*. An inverted LSER was then used to predict α for 7 additional solvents. The new cohesion parameters αβ and π*2 were found to be more representative of cavity formation than δ 2H . Most importantly, it was essential to include either αβ or δ 2H in the LSER. The partition method appears to be a useful adjunct to solvatochromic techniques in refining and extending the α scale of solvent acidity and could be used to rationalize solvent selection in extraction processes.
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Leggett, D.C. Solvent/water partitioning of dimethylmethylphosphonate (DMMP) as a probe of solvent acidity. J Solution Chem 22, 289–296 (1993). https://doi.org/10.1007/BF00649251
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DOI: https://doi.org/10.1007/BF00649251