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.
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Dey, G.R., Naik, D.B., Kishore, K. et al. Kinetic and spectral properties of the intermediates formed in the pulse radiolysis of 2-mercaptobenzimidazole. Res. Chem. Intermed. 21, 47–58 (1995). https://doi.org/10.1163/156856795X00062
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DOI: https://doi.org/10.1163/156856795X00062