García Calzón JA, Muñiz Alvarez JL, López Fonseca JM. Oxidation process induced by 2-mercaptopyrimidine at a mercury electrode.
J Colloid Interface Sci 2005;
290:498-504. [PMID:
15953611 DOI:
10.1016/j.jcis.2005.04.070]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2005] [Revised: 04/20/2005] [Accepted: 04/20/2005] [Indexed: 11/23/2022]
Abstract
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.
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