• Synthesis, magnetic and spectral studies on polystyrene-anchored coordination complexes of bi-, tri-, tetra- and hexavalent metal ions with unsymmetrical dibasic tetradentate ONNO donor Schiff base derived from 3-formylsalicylic acid, ethylenediamine and 2-benzoylacetanilide

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      https://www.ias.ac.in/article/fulltext/jcsc/121/01/0057-0064

    • Keywords

       

      Polystyrene-anchored ligands; polystyrene-anchored complexes; tetradentate; IR; reflectance; ESSR and magnetic susceptibility measurements.

    • Abstract

       

      Polystyrene-anchored Cu(II), Zn(II), Cd(II), Ni(II), Mn(II), MoO2(II), UO2(II), Fe(III) and Zr(IV), complexes of the unsymmetrical dibasic tetradentate ONNO donor Schiff base derived from the condensation of chloromethylated polystyrene, 3-formylsalicylic acid, ethylenediamine and 2-benzoylacetanilide (PS-LH2) has been synthesized. The polystyrene anchored complexes have the formulae: PS-LM (where M = Cu, Zn, Cd, Ni, MoO2, UO2), PS-LFeCl.DMF, PS-LMn$.2$DMF and PS-LZr(OH)$_2.$DMF. The polystyrene-anchored coordination compounds have been characterized by elemental analysis, IR, reflectance, ESR and magnetic susceptibility measurements. The per cent reaction conversion of polystyrene anchored Schiff base to polystyrene supported coordination compounds lies between 28.98 and 85.9. The coordinated dimethylformamide is completely lost on heating the complexes. The shifts of the ν(C=N)(azomethine) and ν(C-O)(phenolic) stretches have been monitored in order to find out the donor sites of the ligands. The Cu(II) complex is paramagnetic with square planar structure; the Ni(II) complex is diamagnetic with square planar structure; the Zn(II) and Cd(II) complexes are diamagnetic and have tetrahedral structure; the Mn(II) and Fe(III) complexes are paramagnetic and have octahedral structure; the MoO2(II) and UO2(II) complexes are diamagnetic and have octahedral structure and the Zr(IV) complexes are diamagnetic and have pentagonal bipyramidal structure.

    • Author Affiliations

       

      Dinesh Kumar1 Arun Syamal1 Jaipal2 Lalit Kumar Sharma3

      1. Department of Chemistry, National Institute of Technology, Kurukshetra 136 119
      2. Department of Chemistry, Haryana College of Technology and Management (HCTM), Kaithal 136 027
      3. Applied Science and Humanities Department, Advanced Institute of Technology, Aurangabad, Palwal 121 105
    • Dates

       
  • Journal of Chemical Sciences | News

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