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    STUDIA CHEMIA - Issue no. 4 / 2007  
         
  Article:   SYNTHESIS AND CHARACTERIZATION OF SOME MIXED LIGAND ZINC(II) COMPLEXES OF THEOPHYLLINE.

Authors:  BELA MIHALY, EDITH FORIZS, IOAN SILAGHI-DUMITRESCU.
 
       
         
  Abstract:   The synthesis, spectral and thermal properties of four mixed ligand complexes of Zn(II) with deprotonated theophylline (th) are reported: [Zn(th)2(ba)2]•2H2O (1), [Zn(th)2(dmen)]•H2O (2), [Zn(th)2(ea)2]•H2O (3) and [Zn(th)2(pa)2]•H2O (4) (ba = benzylamine; dmen = N,N dimethyldiamino-ethane; ea = 2-aminoethanol; pa = 3-aminopropanol). The FTIR spectra of complexes indicate that theophylline acts as a monodentate ligand and coordinates via the N(7) nitrogen atom.  
         
     
         
         
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