Manganese, electrochemistry

Electrochemistry of the Group 7 Elements Manganese, Technetium, and Rhenium... 

I 76 Electrochemistry of the Croup 7 Elements Manganese, Technetium, and Rhenium Tab. 3 Electrochemical data for manganese porphyrins in aqueous media ... 

The electrochemistry of oxo-bridged manganese complexes in aqueous solution is characterized by coupled electron and proton-transfer reactions. The cyclic voltammetric behavior of [Mn2 02(phen)4] + in aqueous pH 4.5 phosphate buffer is illustrated in Fig. 12 [97]. It is of interest to compare this result with that obtained for the same complex dissolved in CH3CN (Fig. 9). Two one-electron reactions are observed in each case. However, these correspond to Mn(IV,IV) Mn(IV,III) and Mn(IV,III) Mn(III,III) reductions in the nonaqueous solvent and to Mn(IV,III) Mn(III,III) and Mn(III,III) Mn(III,II) reductions in... 

Rhenium is a rare element, having eluded discovery until 1925. Its chemistry [1, 2] and electrochemistry [3, 4] have been reviewed on previous occasions. The properties of Re compounds closely parallel those of Tc, and, although many comparative studies have been conducted on the two elements, the rhenium literature is the more extensive. The properties of both elements are quite distinct from those of manganese. 

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