Detection of superoxide ion in aqueous media by N-halopiperidines

✍ Scribed by A. Rigo; E. Argese; E.F. Orsega; P. Viglino

• Book ID: 104138872
• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 371 KB
• Volume: 35
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)93434-0

✦ Synopsis

The reaction between N-chloro-or N-bromo-2,2,6, 64etramethylpiperidines and superoxide radical has been studied. 2,2,6,6-tetramethylpiperidines are the main reaction products, while the corresponding piperidinoxyl spin hzbel, has been formed as a secondary reaction product with a yield which is independent of the concentration of reagents. In this way N-halopiperidines can be used as specific spin-trappers of superoxide ion. A kinetic scheme which takes into account the consecutive reaction between piperidinoxyl and superoxide is proposed and the relative kinetic constants are given.