• Kinetics of oxidation of nickel(II) aza macrocycles by peroxydisulphate in aqueous media

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Kinetics; oxidation; peroxydisulphate; Ni(II) hexaazamacrocycle; Ni(II) pentaaza macrocycle

    • Abstract


      The kinetics of the oxidation of nickel (II) hexaaza and nickel (II) pentaaza macrocycles by the peroxydisulphate anion, S2O82−, were studied in aqueous media. Effect of pH on reaction rate was also studied. The rate increases with increase of S2O82− concentration. Rates are almost independent of acid betweenpH 4 and 2, giving overall a relatively simple second-order rate law followed by oxidation within the ion pair solvent shell. Using rate =+1/2 d[Ni(L)3+]/dt =k[Ni(L)2+][S2O82−], oxidation rate constants were determined.

    • Author Affiliations


      J Lalitham1 V R Vijayaraghavan1

      1. Department of Physical Chemistry, University of Madras, Guindy Campus, Chennai - 600 025, India
    • Dates

  • Journal of Chemical Sciences | News

© 2022-2023 Indian Academy of Sciences, Bengaluru.