Spectral studies of coordination compounds of cobalt(II) with thiosemicarbazone of heterocyclic ketone.
The paper presents the spectral analysis of cobalt(II) complexes with indoxyl thiosemicarbazone (ITSC) of general composition [CoL2X2] (where L=ITSC, X=Cl-, NO3-, (1/2)SO4(2-), NCS-). The geometry of the complexes have been characterized by elemental analysis, molar conductance, magnetic susceptibility measurements and spectral (electronic, IR, EPR, 1H NMR, mass) studies. The various physico-chemical techniques suggested a coordination number of six (octahedral) for chloro, nitrato and thiocyanato complexes. Whereas sulfato complex was found to have five coordinate trigonal-bipyramidal geometry. All the complexes are of high spin type showing magnetic moment corresponding to three unpaired electrons.
Department of Chemistry, Zakir Husain College, University of Delhi, J.L. Nehru Marg, New Delhi 110002, India.
Sulekh
S
Chandra
Umendra
U
Kumar
D003035:Cobalt / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D004583:Electrons; D007659:Ketones / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008280:Magnetics; D013055:Spectrophotometry, Infrared; D013882:Thiosemicarbazones / Q000138:chemical synthesis / Q000737:chemistry*
D007659:Ketones; D013882:Thiosemicarbazones; D003035:Cobalt