Determination of stability constants of thallium(I) complexes with amino acids by DeFord & Hume’s method in aqueous medium
نویسنده
چکیده
The stability constants of complexes formed by Thallium (I) with Serine and Leucine have been investigated in aqueous medium, the complex with metal Serine as 1:1, 1:2 and complexes of the Tl(I) with Leucine as 1:1, 1:2 have been reported. The values of formation constant of Serine are log β1 = 2.1760, log β2 = 3.85325 at 308K and log β1 = 1.9030, log β2 = 3.6739 at 318K and complexes of Tl(I) with Lecucine have log β1 = 4.0290, log β2 = 5.2922 at 308K and log β1 = 3.4772, log β2 = 4.4151 at 318K, respectively were calculated by DeFord and Hume’s method.
منابع مشابه
Electrochemical studies of Tl(I) complexes with Ornithine monohydrogen chloride in aqueous media
The polarographic determination of stability constants of metal complexes of Thallium(I) with Ornithine monohydrogen chloride under varying temperatures 300K and 313K in aqueous media have shown the formation of 1:1, 1:2 and 1:3 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 r...
متن کاملMetal-Ion-Coordinating Properties of Various Amino Acids, Investigation of the Essential Function in Biological Systems regarding to their Nano-Structure
The acidity constants of some amino acids (Am) were determined by potentiometric pH titration. The stability constants of the 1:1 complexes formed between M2+: Ca2+, Mg2+, Mn2+, Co2+, Ni2+, Cu2+ or Zn2+ and Am2-, were determined by potentiometric pH titration in aqueous solution (I = 0.1 M, NaNO3, 25°C). The order of the stability constants was reported. It is shown that the stability of the bi...
متن کاملMetal-Ion-Coordinating Properties of Various Amino Acids, Investigation of the Essential Function in Biological Systems regarding to their Nano-Structure
The acidity constants of some amino acids (Am) were determined by potentiometric pH titration. The stability constants of the 1:1 complexes formed between M2+: Ca2+, Mg2+, Mn2+, Co2+, Ni2+, Cu2+ or Zn2+ and Am2-, were determined by potentiometric pH titration in aqueous solution (I = 0.1 M, NaNO3, 25°C). The order of the stability constants was reported. It is shown that the stability of the bi...
متن کاملElectrochemical study and electrode kinetics of complexes of Ga(III) with various amino acids
The electroreduction of Ga(III) in the aqueous medium has been investigated at DME. The stability constants of Ga(III)-Amino acids have been evaluated by the method of DeFord and Hume's method and Kinetic parameters have been calculated by Koutecky’s method. The reduction of complexes has been found to be irreversible and diffusion controlled involving three electrons in each case. Ga(III) form...
متن کاملThe impact of solvents on the stability of complexes of Cd(II) with L-tyrosine in aqueous-organic solvent mixtures
The polarographic study of Cd(II) with L-Tyrosine has been investigated in aqueous organic solvent mixtures at 300K. The Dimethyl sulphoxide and Dimethyl formamide solvents have been used with water to study the effect of solvents on the stability of complexes. Cadmium(II) formed 1:1, 1:2 and 1:3 complexes with L-Tyrosine in the aqueous-organic solvent mixture i.e. DMSO and DMF. The stability c...
متن کامل