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 Hume’s 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 ß₁ and log ß₂ 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