Disulfide electrochemical behavior

The redox chemistry observed for these compounds by using electrochemical methods is similar to that observed for thiolates in the absence of metal ions (83, 84) and strongly suggests the formation of disulfides. This behavior has also been noted in the electrochemical study of the oxidation of [Ni(pdmt)SPh] (85). The largest difference observed... 

The effect of nonpolar solvents on the electrochemical behavior of surface-confined redox groups has also been studied by Geiger et al. Undiluted monolayers containing polynorbornyl spacers between dimethoxynaphthalene redox probes and the electrode were employed (System 9). Thiol, dithiol or disulfide head groups were used to increase SAM stability in nonpolar solvents [103]. Calculated by Laviron s method, the values of ket are an order of magnitude faster than expected for a same-length alkanethiol spacer in an organic solvent [104]. The unexplained difference... 

Ring-methoxylated biphenyls containing disulfide bridges (LXIII-LXVI) also were investigated to establish their electrochemical behavior under oxidative conditions, and it was shown that they are all oxidized in two one-electron steps [193],... 

Amino-6-methyl-3-thio-l,2,4-triazin-5-one and 6-methyl-3-thio-l,2,4-triazin-5-one exhibit similar electrochemical behavior. Both compounds display two cathodic peaks. The first one is one-elecron reduction of thiol, thus initiating dimerization and the formation of disulfides, while the second two-electron wave corresponds to reduction of the 1,2,4-triazine ring <2005JEC245>. 

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