• Reactions of sulphacetamide with pulse radiolytically generated reducing radicals

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      https://www.ias.ac.in/article/fulltext/jcsc/106/04/0871-0879

    • Keywords

       

      Sulphacetamide; pulse radiolysis; electron-transfer reaction

    • Abstract

       

      Pulse radiolysis technique has been used to characterise the transients formed by the reaction of sulphacetamide with eaq- and subsequently study the electron transfer reactions from the transient to various electron acceptors such as thionine, safranine-T and methyl viologen. The results indicate that the semi-reduced sulphacetamide species are highly reducing in nature as they transfer electrons to various dyes with near diffusion controlled rates (k > 109dm3mol−1s−1) in alkaline and acidic solutions. The influence of oxygen on the decay behaviour of semi-reduced species has been investigated and the results show that O2 reaction with SA is very fast (k = 1.5 × l09dm3mol−1s−1) and leads to the formation of a permanent-coloured product. Reactions of H.atoms resulted in the formation of two transient species whose spectral, kinetic and acid-base characteristics have also been investigated.

    • Author Affiliations

       

      S Sabharwal1 K Kishore2 P N Moorthy2

      1. Isotope Division, Bhabha Atomic Research Centre, Trombay, Bombay - 400 085
      2. Applied Chemistry Division, Bhabha Atomic Research Centre, Trombay, Bombay - 400 085
    • Dates

       
  • Journal of Chemical Sciences | News

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