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Oxidation process induced by 2-mercaptopyrimidine at a mercury electrode
被引:1
|作者:
Calzón, JAG
[1
]
Alvarez, JLM
[1
]
Fonseca, JML
[1
]
机构:
[1] Univ Oviedo, Dept Quim Fis & Analit, E-33071 Oviedo, Spain
关键词:
2-mercaptopyrimidine;
mercury electrode;
voltammetric techniques;
adsorption;
D O I:
10.1016/j.jcis.2005.04.070
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
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. (c) 2005 Elsevier Inc. All rights reserved.
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页码:498 / 504
页数:7
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