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 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.
García Calzón
Josefa Angela
JA
Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Asturias, Spain.
Muñiz Alvarez
Jesús Luis
JL
López Fonseca
Juan Miguel
JM
D000327:Adsorption; D004566:Electrodes; D008628:Mercury / Q000737:chemistry*; D010084:Oxidation-Reduction; D011048:Polarography; D011743:Pyrimidines / Q000737:chemistry*; D013499:Surface Properties
D011743:Pyrimidines; C064001:pyrimidine-2-thiol; D008628:Mercury