• Polarographic studies on the quantitative treatments of substituent effects of some aromatic isothiocyanates

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      https://www.ias.ac.in/article/fulltext/jcsc/088/02/0137-0141

    • Keywords

       

      Polarography; reduction; aromatic isothiocyanates; Hammett equation

    • Abstract

       

      The polarographic reduction of aromatic isothiocyanates takes place in a single 4e reduction wave in the B.R. buffers of pH 4·6-10·0. Thelimiting current is diffusion controlled and the waves are irreversible in nature. The half wave potential and limiting current are independent of pH. The reduction in these compounds occurs at -N = C = S group and the effect of substituents has been interpreted in the terms of Hammett equation. The value of specific reaction constant (ρ) is found to be 0·12 V and the positive sign of ρ indicates the nucleophilic nature of the reduction.

    • Author Affiliations

       

      Wahid U Malik1 R N Goyal1 Sudha Tyagi1

      1. Department of Chemistry, University of Roorkee, Roorkee - 247 672
    • Dates

       
  • Journal of Chemical Sciences | News

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