| Popis: |
The electrode reaction of tris(1,10-phenanthroline)iron(II) complex was studied in aqueous and non-aqueous solvents. The experimental results were compared with the diagnostic criteria derived by Nicholson and Shain. It was found that the oxidation of Fe(phen) 2+ 3 was the simple reversible reaction at low pH; however, at high pH, the reversible process was followed by the irreversible formation reaction of ferric hydroxide ion. In acetonitrile, the reversible oxidation of Fe(phen) 2+ 3 was coupled with the catalytic reduction of Fe(phen) 3+ 3 to reproduce the ferrous complex. The major cause of solvent effect on the electrode reaction could be attributed to the labile nature of ferric complex of 1,10-phenanthroline. |
