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  • Chem Sci Trans., 2013, 2(1),  pp 47-50  

    DOI:10.7598/cst2013.279

    Research Article

    Electrochemical Study of Complexes of Tl(I) with Asparagine at DME in Non-Aqueous Medium

  • MADHU MOYAL and O.D. GUPTA
  • Department of Chemistry, University of Rajasthan, Jaipur- 302004, India
  • Abstract

    The polarographic measurements have been used to determine the overall formation constants of simple complexes of Tl(I) with asparagine. The reduction of complexes is found to be involving one electron. DeFord and Humes treatment suggests that aspargine forms 1:1 and 1:2 complexes in non-aqueous medium (20% and 40% v/v ethanol-water mixtures and 20% and 40% v/v DMF-water mixtures) at 298 K and 308 K. The overall formation constants log 1 and log 2 have been calculated for Tl(I)-Asparagine system. The thermodynamic functions ΔG, ΔH and ΔS have been determined for both the complexes at 298 K in 20% and 40% ethanol-water mixtures and 20% and 40% DMF-water mixtures.

    Keywords

    DC Polarogrpahy, Formation constants, Tl(I), Asparagine, DMF, Ethanol

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