Oxidation process induced by 2-mercaptopyrimidine at a mercury electrode

Oxidation process induced by 2-mercaptopyrimidine at a mercury electrode

The oxidation process induced by 2-mercaptopyrimidine (RSH) at a hanging mercury drop electrode was studied in aqueous media by normal and cyclic voltammetry. The results indicate the formation of a weakly adsorbed HgSR complex according to the reaction Hg + RSH → HgSR + e − + H +. When the surface...

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Veröffentlicht in:Journal of colloid and interface science 2005-10, Vol.290 (2), p.498-504
Hauptverfasser: GARCIA CALZON, Josefa Angela, MUNIZ ALVAREZ, Jesus Luis, LOPEZ FONSECA, Juan Miguel
Format: Artikel
Sprache:eng
Schlagworte:
2-Mercaptopyrimidine
Adsorption
Chemistry
Electrochemistry
Electrodes
Exact sciences and technology
General and physical chemistry
Mercury - chemistry
Mercury electrode
Oxidation-Reduction
Polarography
Pyrimidines - chemistry
Surface physical chemistry
Surface Properties
Voltammetric techniques
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Zusammenfassung:The oxidation process induced by 2-mercaptopyrimidine (RSH) at a hanging mercury drop electrode was studied in aqueous media by normal and cyclic voltammetry. The results indicate the formation of a weakly adsorbed HgSR complex according to the reaction Hg + RSH → HgSR + e − + H +. When the surface excess of HgSR is high, a two-dimensional condensation takes place if the potential is positive enough, as proved by phase-sensitive ac and cyclic voltammetry.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2005.04.070