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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