Electrochemical Studies of Tl(I) Complexes with Adipic Acid and Nicotinic Acid in Aqueous Media

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The polarographic determination of stability constants of metal complexes of Thallium(I) with Adipic acid and Nicotinic acids under varying temperatures 308K and 318K in aqueous media have shown the formation of 1:1 and 1:2 complexes. The values of overall stability constants of complexes have been calculated by DeFord and Hume's method which is further verified by Mihailov's method. The reduction process was found to be reversible and diffusion controlled. The change in thermodynamic parameters ΔG°, ΔH° and ΔS° accompanying complexation have been also evaluated.

Thallium(I); Adipic acid; Nicotinic acid; polarography; Mihailov’s method; DeFord-Hume’s method; Reversible.