Inner-sphere oxidation of ethylenediaminetetraacetatocobaltate(II) byN-bromosuccinimide

✍ Scribed by Ahmed A. Abdel-Khalek; El-Said M. Sayyah; Eman S. H. Khalid

• Book ID: 104657477
• Publisher: Springer
• Year: 1993
• Tongue: English
• Weight: 326 KB
• Volume: 18
• Category: Article
• ISSN: 0340-4285
• DOI: 10.1007/bf00191120

✦ Synopsis

The kinetics of oxidation of [CoI~(EDTA)] 2 (EDTA = ethylenediaminetetraacetate) by N-bromosuccinimide (NBS) in aqueous solution obey the equation:

where k2 is the rate constant for the electron-transfer process, K 2 the equilibrium constant for the dissociation of [Con(EDTAH)(H20)] -to [CoJ'(EDTA)(OH)] 3and K 3 the pre-equilibrium formation constant. The activation parameters are reported. It is proposed that electron transfer proceeds via an inner-sphere mechanism with the formation of an intermediate which slowly generates hexadentate [Com(EDTA)]-.