The static electric permittivity of solutions of organic molecules in dipolar solvents |
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Authors: | U Kaatze C Neumann R Pottel |
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Institution: | (1) Drittes Physikalisches Institut der Universität Göttingen, Bürgerstr. 42-44, D-3400 Göttingen, Federal Republic of Germany |
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Abstract: | The permittivity of solutions of pyrazine and of 1,4-diazabicyclo-2,2,2]-octane (TED) in various dipolar solvents has been measured at 10 MHz by means of a sensitive bridge method. The solvents used were water, methanol, formamide, N-methylformamide, N,N-dimethylformamide, and dimethylsulfoxide. The results of the measurements are compared with those of theoretical mixture formulas. It is shown that — depending on structural properties — the permittivity attributed to the solvation shells around the organic solute molecules is changed with respect to the pure solvent value. |
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Keywords: | Static dielectric constant liquid solutions molecular structure solvophobic effects |
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