• Synthesis and room temperature single crystal EPR studies of a dinickel complex having an Ni2(μ-phenoxide)22+ unit supported by a macrocyclic ligand environment [Ni2(L)2(OClO3)2] [L = 2-[(4-methyl-pyridin-2-ylimino)-methyl]-phenol]

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      https://www.ias.ac.in/article/fulltext/jcsc/115/02/0091-0102

    • Keywords

       

      Hsalamp; cyclic voltammetry; electron paramagnetic resonance; spin-Hamiltonian parameters

    • Abstract

       

      A bimetallic nickel(II) complex with the ligand Hsalamp (2-[(4-methyl-pyridin-2-ylimino)-methyl]-phenol), having the molecular formula, Ni2C26H22 N4O10Cl2, is synthesized and characterized by elemental, UV-Vis, IR and EPR studies. The IR spectrum confirms the presence of coordinated perchlorate ion and the UV-Vis. spectrum substantiates that the geometry around the metal ion is distorted square pyramidal. In the solvent methanol, the complex undergoes dissociation indicating the nature of the complex to be 1:2 electrolyte. The single crystal EPR studies indicate that the zero-field splitting is not large and the spectra can be observed even at room temperature, not so common for a nickel(II) ion. The spin Hamiltonian parameters calculated from single crystal rotations are:g - 2.377, 2.219, 2.071 and D - 9.7, 4.2 and -13.9 mT. Optical and electron paramagnetic spectral data have been used to obtain the parametersDq,B andC.

    • Author Affiliations

       

      R Srinivasan1 I Sougandi1 R Venkatesan1 P Sambasiva Rao1

      1. Department of Chemistry, Pondicherry University, Pondicherry - 605 014, India
    • Dates

       
  • Journal of Chemical Sciences | News

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