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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. |
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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. | |||||||