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    • Electrochemical and spectroscopic studies on some pyridyl and morpholyl adducts of (meso-tetraphenylporphyrin)chromium(III) chloride

      S P Roe R J Magee J O Hill

      Inorganic and Analytical Volume 96 Issue 1-2 January 1986 pp 1-8

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/096/01-02/0001-0008

    • Keywords

       

      (meso-Tetraphenylporphyrin)chromium(III) chlorides; base adducts; electrochemical behaviour

    • Abstract

       

      The electrochemical behaviour of the adducts Cr(TPP)·Cl·L, whereTPP = tetraphenylporphyrin;L = pyridine, 2-picoline, 2,6-lutidine, 4-cyanopyridine, morpholine or 4-picoline is reported and the relationship between reduction potentials, the electron band I transition and the binding energy of the Cr2p3/2 level examined.

      Based on criteria for the differences in oxidation potentials determined in acetonitrile by cyclic voltammetry and reduction potentials determined inDMSO, it is concluded that the adducts behave as normal metalloporphyrins. Further, variations for the different adducts are attributed primarily to different inductive effects from the heterocyclic axial groups. The adduct formed from 2,6-lutidine, however, shows anomalous behaviour which is attributed to a marked steric effect between the ligand and the porphinato-nitrogen atoms.

    • Author Affiliations

       

      S P Roe1 R J Magee1 J O Hill1

      1. Department of Chemistry, La Trobe University, Bundoora (Melbourne), Victoria - 3083, Australia

    • Dates

       
      Published
      January 1986
      Manuscript received
      14 March 1985
      Manuscript revised
      30 July 1985

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