Kinetic and spectral properties of the intermediates formed in the pulse radiolysis of 2-mercaptobenzimidazole |
| |
Authors: | G R Dey D B Naik K Kishore P N Moorthy |
| |
Institution: | 1. Applied Chemistry Division, Bhabha Atomic Research Centre, 400 085, Trombay, Bombay, India
|
| |
Abstract: | The reactions of primary species of water radiolysis such as e- aq, H* and *OH, and some specific one electron reductants and oxidants with 2-mercaptobenzimidazole have been studied at various pHs. *OH radical reaction with MBZ at pH 7 gave a transient species having absorption maxima (λmax) at 330 and 590 nm. The transient species (pKa = 3.6) was found to be neutral at this pH and was a mild oxidant. The initial transient species formed by the reaction of MBZ with e- aq at pH 7 and with H atom at pH 0 were found to react with the parent molecule to form another transient species which has an absorption spectrum similar to that obtained by *OH radical reaction with λmax at 590 nm. However the reaction is not quantitative. The kinetic, spectral, acid-base and redox properties of the transient species are reported. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|