Abstract
ViscosityB-coefficients of sodium salts of salicylic, thiosalicylic, anthranilic, 2,6-dihydroxy benzoic and ito-anisic acids have been measured at 298, 303 and 308 K respectively. Temperature dependence ofB-values suggest that the salts as well as their anions excepto-anisate behave as structure breakers. This is further supported by energy of activation data. The observedB-coefficients suggest probable involvement of simultaneous intra- and intermolecular hydrogen bonding between an ortho-substituent and the carboxylate group on the one hand and between the ortho-substituent and solvent water on the other. A good correlation betweenB-coefficients and the electronegativities of oxygen, nitrogen and sulphur atoms has been noted. The probable involvement of ringπ-electrons in depolymerising the water structure has been conjectured.
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Chatterjee, D.K., Seal, B.K. ViscosityB-coefficients of sodium salts of some orthosubstituted benzoic acids in relation to hydrogen bonding and electronegativity. Proc. Indian Acad. Sci. (Chem. Sci.) 104, 409–416 (1992). https://doi.org/10.1007/BF02839550
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DOI: https://doi.org/10.1007/BF02839550