• Iron(III) and cyano-bridged dinuclear copper(II) complexes: synthesis, structures and magnetic property of the copper(II) complex

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      https://www.ias.ac.in/article/fulltext/jcsc/132/0102

    • Keywords

       

      Fe(III) and Cu(II) complexes; cyano-bridged dinuclear Cu(II); crystal structures; magnetic study.

    • Abstract

       

      This report describes the synthesis and structural characterizations of three new complexes; [Na3Fe2(bbp)(Hbbp)(CN)6(H2O)9]4H2O (1), (Bu4N)[Fe(bbp)2].3CH3OH.2H2O (2), and a cyano-bridged dinuclear copper(II) complex, [Cu2(tren)2(CN)][Fe(bbp)2]3 6CH3OH.4H2O (3), where H2bbp = bis(2-benzimidazolyl) pyridine and tren = tris(2-aminoethyl)amine. X-ray crystallography reveals that the geometry of iron(III) centers in the complex anions of 1–3 is an octahedral, while it is a trigonal bipyramidal around copper(II) center in the complex cation of 3. Both bbp ligands meridionally coordinate iron(III) centers in the complex cations of 2 and 3, while three cyanide ions and bbp (or Hbbp) ligand occupied either of the meridional positions around the metal center in 1. In the dinuclear complex cation of 3, the Cu(II)-CN-Cu(II) bridging region is strictly linear as dictated by the symmetry with Cu...Cu separation of 5.084 (7) A° . Variable temperature magnetic susceptibility study shows that the cyano-bridge mediates the antiferromagnetic coupling between copper(II) centers with J value of -110 K in 3.

    • Author Affiliations

       

      GOUTAM MAHATA1 ANANGAMOHAN PANJA1 2

      1. Department of Chemistry, Gokhale Memorial Girls’ College, 1/1 Harish Mukherjee Road, Kolkata 700 020, India
      2. Department of Chemistry, Panskura Banamali College, Panskura 721 152, India
    • Dates

       
  • Journal of Chemical Sciences | News

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