Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2010 Vol: 2 Issue: 6

Thermodynamic studies of rare earth metal complexes with Rifampicin in mixed solvent system

Abstract

The determination of stability constant of Rifampic in complexes with rare earths metal ions in temperature range 303-318 K at constant ionic stren gth 0.1M.in 50% dioxane-water mixture by adopting pH metric technique been studied. The ther modynamic parameters ( ∆ G,  ∆ H and ∆ S) were calculated from values of stability constant at dif ferent temperatures. The formations of metal complexes were found to be spontaneous and exotherm ic nature.