Arijit Das - Synthesis and Characterization of mixed ligand complexes of Co(II) ion with some N and S donor

Document created by Arijit Das on Aug 22, 2014Last modified by Arijit Das on Sep 22, 2014
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  Publication Details (including relevant citation   information):

  IOSR Journal of Applied Chemistry (IOSR-JAC)

  ISSN: 2278-5736.Volume 7, Issue 4 Ver. I. (Apr. 2014), PP 24-29

  DOI: 10.9790/5736-07412429,

  Indexed in : ANED-DDL (American National Engineering Database Digital Data link) no: 23.5736/iosr-jac-E07412429



  Mixed ligand complexes of Co(II) ion with some   heterocyclic nitrogen donors and   1,1-dicyanoethylene-2,2-dithiolate of the compositions,   Co(N-N)2(i-MNT), Co(N-N)(i-MNT).2H2O and Co(N-N)(i-MNT)L2 [N-N =   1,10-phenanthroline, 2,2’-bipyridine ; i-MNT 2- = 1,1-dicyano-   ethylene -2,2-dithiolate ; L = pyridine(py), -picoline (-pic),   -picoline (-pic) or -picoline (-pic) have been isolated and   characterized on the basis of analytical data, molar conductance,   magnetic susceptibility, electronic and infrared spectral   studies. The molar conductance data reveal non-electrolytic   nature of the complexes in DMF. Magnetic moment values suggest   low spin complexes. The electronic spectral data suggest   distorted octahedral stereochemistry around Co(II) ion in these   complexes. Infrared spectral studies suggest bidentate chelating   behaviour of i-MNT2- , 1,10-phenanthroline and 2,2’-bipyridine   while other ligands show unidentate behaviour in their   complexes.

  Keywords: Cobalt(II), 1,1-dicyanoethylene-2,2-dithiolate,   Nitrogen donors, Mixed ligand complexes.

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