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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/127/10/1845-1852

    • Keywords

       

      Solvents effects; copper(II) complexes; kinetics; stopped-flow method.

    • Abstract

       

      The kinetics of substitution reactions of the CuODA and CuTDA binary complexes (ODA = oxydiacetate, TDA = thiodiacetate) with 1,10-phenanthroline (phen) and 2,2’-bipyridine (bipy) were studied in aqueous and DMSO solutions. These reactions were monitored spectrometrically using the stopped-flow method in the UV range. The studies were carried out at three temperatures - 298.15, 303.15 and 308.15 K. The concentrations of the binary complexes were kept within the range of 0.2–0.5 mmol L−1, whereas the concentration of phen or bipy was constant = 0.05 mmol L−1. The values of the reaction rate constants were calculated based on the A → B reaction model. A linear relationship of the rate of the substitution reaction versus the concentration of the binary complex as well as temperature was observed. The impact of the type of the primary (ODA and TDA) and auxiliary ligands (phen and bipy) as well as the effect of solvent on the rate of substitution reaction have been discussed.

    • Author Affiliations

       

      Joanna Pranczk1 Dagmara Jacewicz1 Dariusz Wyrzykowski1 Aleksandra Tesmar1 Lech Chmurzyński1

      1. Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
    • Dates

       
  • Journal of Chemical Sciences | News

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