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[摘要]：The 1 1 equilibrium constants, K, for the association of hydrogen bond bases and hydrogen bond acids have been determined by using octan-1-ol solvent at 298 K for 30 acid-base combinations The values of K are much smaller than those found for atprotic, rather nonpolar solvents It is shown that the log K values can satisfactorily be correlated against alpha(H)(2) beta(H)(2), where alpha(H)(2) and beta(H)(2) are the 1 1 hydrogen bond acidities and basicities of solutes The slope of the plot, 2 938, is much smaller than those for log K values in the nonpolar organic solvents previously studied An analysis of literature data on 1 1 hydrogen bonding in water yields a negative slope for a plot of log K against alpha(H)(2) beta(H)(2), thus showing how the use of very strong hydrogen bond acids and bases does not lead to larger values of log K for 1 1 hydrogen bonding in water It is suggested that for simple 1 1 association between monofunctional solutes in water, log K cannot be larger than about -0 1 log units Descriptors have been obtained for the complex between 2,2,2-trifluoroethanol and propanone, and used to analyze solvent effects on the two reactants, the complex, and the complexation constant |
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