The thermodynamic characteristics of sublimation of fenamate molecular crystals |
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Authors: | A. O. Surov G. L. Perlovich |
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Affiliation: | 1.Institute of the Solution Chemistry,Russian Academy of Sciences,Ivanovo,Russia |
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Abstract: | The temperature dependences of vapor pressure were determined by the transpiration method and the thermodynamic functions of sublimation were calculated for six molecular crystals from the group of nonsteroidal antiinflammatory drugs, for niflumic, flufenamic, tolfenamic, mefenamic, and N-phenylanthranylic acids and diphenylamine. The influence of substituents on the enthalpies of sublimation of compounds of this class was studied. A correlation was observed between the enthalpies of sublimation under standard conditions and the temperatures of fusion. |
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