Electrochemical Interconversion of Mono-, Bi-, and Tetranuclear (Bipyridyl) Manganese Complexes in Buffered Aqueous Solution

摘要

In summary, this work presents a straightforward electro- chemical method for preparing selectively Mn_2 and Mn_4 clusters from a mononuclear Mn(Ⅱ) species. It also demonstrates the significant tendency of Mn(IV) species to aggregate, even in a medium containing a large excess of by ligands. Lastly, the above results suggest that 1 cannot act as an efficient homo- geneous electrocatalyst for H_2O oxidation in aqueous solution, since its 1-electron-oxidized form is unstable and leads to the stable species 3.