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    STUDIA CHEMIA - Issue no. 4 / 2007  
         
  Article:   SYNTHESIS AND SPECTROSCOPIC INVESTIGATION OF METAL COMPLEXES WITH AN AZO-DYE AS LIGAND.

Authors:  CARMEN BÂTIU, IOAN PANEA, MIRELA PELEA, ANCA MARCU, LEONTIN DAVID. 		 
       
         
  Abstract:  The Cu(II), Co(II) and Ni(II) metal complexes derived from 1-(4''-hydroxy-6''-methyl-pyrimidin-2''-yl)-3-methyl-4-(4''''-nitrophenylazo)-pyrazolin-5-one were synthesized and characterized by elemental analysis, hermogravimmetry, as well as by FT-IR, UV-VIS and ESR spectrometry. The results indicate that the organic compound act as a bidentate ligand via the nitrogen of azo group and the oxygen bound to the pyrazole ring. All complexes correspond to the molar ratio M : L : H2O = 1 : 2 : 8. The local symmetry around the metal ions is pseudotetrahedral.  
         
     
         
         
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