Exchange of organomercury compounds with mercury metal

Electrode reactions and electroanalysis of organomercury compounds

“…3 b). 109,111 This was rationalized 109 by the presence of the subsequent fast chemical reaction with the order varying from 1 to 2 with the increase in i. The Tafel plot for oxidation was completely irreversible; hence, the oxidized intermediate was not identical to RHg .…”

“…The species formed during the adsorption and electroreduction of RHgR H derivatives at a mercury electrode were studied 110,111 as well as the compositions of mixtures of RHgX and R H HgX; R 2 Hg and R H 2 Hg (R = R H ) (Fig. 6).…”

“…radicals after their appearance recombined to form intermediates such as EtHgHgC 6 F 5 (`organic calomel'). Presumably, 111 Alk 2 Hg at a mercury electrode was also in equilibrium with the corresponding`organic calomels'. The second wave in the polarograms of RHgX (in any case, its beginning, where the ER rate is still very low) was also associated with the electroreduction of R 2 Hg 2 rather than of RHg .…”

“…In the latter mechanism described for R 2 Hg (R = Me, Et, Pr, sec-Bu) compounds, 109 Et2Hg EtHgHgC6F5 (1, 2), mixtures of (C6F5)2Hg and Et2Hg (3), (C6F5)2Hg and EtHgCl (4), C6F5HgBr and EtHgCl (5, 6) and also of C6F5HgBr (7), EtHgCl (8). 111 KOAc solution in aqueous methanol (10 vol …”

“…36,84,241,251 The blockage often shifted the electroreduction potentials of R 2 Hg 2 ([RHg ads ] n ) and R 2 Hg to more negative values. 111,192`R everse' peaks in the CV method are the analogues of polarographic maxima 241 being associated with the adsorption of intermediates of the electrode process, which results in the mercury surface motion. Localization of such peaks in the potential range of the second step (Fig.…”