The Redox Chemistry of ( N 1 ‐[3‐(2‐aminoethylimino)‐1,1‐dimethylbutyl]ethane‐1,2‐diamine)nickel( II ) Perchlorate, Ni II L 1 (ClO 4 ) 2 , in Aqueous Solutions –A Pulse Radiolytic and an Electrochemical Study

The ligand (N 1 ‐[3‐(2‐aminoethylimino)‐1,1‐dimethylbutyl]ethane‐1,2‐diamine), L 1 , induces a high ligand field on the central Ni II ion. Thus it is relatively easy to oxidize(Ni II L 1 ) 2+ . However, the kinetic stability of the Ni III L 1 complexes is considerably lower than that of their analogous macrocyclic complexes. This difference in stabilities isattributed to the less rigid ligand framework, which facilitates the oxidation of ligand. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)