Electrochemical study of gallium(III) with l-glutamine at the dropping mercury electrode

Electrochemical and thermodynamic study of the electroreduction of Bi(III) ions in the presence of cysteine in solutions of different water activity

“…Changes in the rates of electrode reactions are strictly connected with changes in the activation energy (DH -) or standard reaction entropy (DS 0 ) of the process [3,4,[25][26][27][28].…”

Electrochemistry of Gallium

“…The heterogeneous rate constant of Ga(III) in an acidic solution of pH 1 containing 1 mM Ga(III), 0.05 M NaSCN, and 6.0 M NaClO 4 was 0.016 cm/sec. Sharma and Gupta obtained the kinetic parameters of the electrode reactions of gallium-amino acid complexes using DL α-alanine 85) and L-glutamine 52) as ligands. The formal rate constant (k 0 f,h ) of the reduction of the Ga(III)-complex was calculated by Koutecky's treatment extended by Meites and Israel 86) as Eqs.…”

“…Sharma and Gupta 52,85) calculated the diffusion coefficient of Ga(III)-DL α-alanine 85) and Ga(III)-Lglutamine 52) from Ilkovic equation for average currents at different concentration of amino acid and different temperature. The data are listed in Table 1.…”

Electrochemistry of Gallium

“…The authors assumed that azide nucleophile bound rather firmly to (very likely polynuclear) Ga(III) based on changes in E p with pH and azide, the failure of oxide to precipitates prior to pH 4, and sigmoidal increase of i p with added azide. Sharma and Gupta 52) investigated the formation and electrochemistry of the complexes through the interaction of Ga(III) and Lglutamine in the presence of 0.1 M KNO 3 and 0.002% Triton-x-100 at pH 3.5 using a polarographic method. Ga(III) and L-glutamine under this condition formed 1:1, 1:2, and 1:3 gallium(III)-L-glutamine complexes.…”

“…Sharma and Gupta 52,85) calculated the diffusion coefficient of Ga(III)-DL α-alanine 85) and Ga(III)-Lglutamine 52) from Ilkovic equation for average currents at different concentration of amino acid and different temperature. The data are listed in Table 1.…”