Some aspects of the radiolysis of cobalt(II) iminodiacetate in aqueous solution
Abstract
The radiolysis of cobalt(II) iminodiacetate has been studied. Both pulse radiolysis and product analysis after γ-irradiation indicate that OH attack proceeds 55% at the metal ion in the complex and 45% at the ligand. The rate constant for the overall reaction is 5.8 × 108 dm3 mol–1 s–1; that for metal-ion oxidation is 3.2 × 108 dm3 mol–1 s–1 and for hydrogen abstraction from the ligand is 2.6 × 108 dm3 mol–1 s–1. The ions Br2– and O2– react with the complex wholly via oxidation of the metal ion, with rate constants of 8.9 × 107 and 3.0 × 107 dm3 mol–1 s–1 respectively.