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Structural Diversity of 3d Complexes of an Isatinic Quinolyl Hydrazone

Author Affiliations

  • 1Ain Shams University, Faculty of Education, Department of Chemistry, Roxy, Cairo, EGYPT

Res.J.chem.sci., Volume 1, Issue (5), Pages 67-72, August,18 (2011)

Abstract

The reaction of the isatinic quinolyl hydrazone (H2) with Fe(III), Co(II), Ni(II), Cu(II) and VO(II) ions in presence of LiOH afforded mononuclear as well as dimeric chelates. Due to the presence of LiOH, the ligand used its lactim form in all complexes and showed a variety of modes of bonding viz. (NNO)2-, (NO) with or without O- bridging per each metal ion. The mode of bonding and basicity of the ligand depend mainly on the type of the metal ion. The obtained Co(II), Ni(II) and Cu(II)- complexes have the square planar geometry, whereas, Fe(III) and VO(II)- complexes have the octahedral geometry. LiOH behaves as a coligand in case of Fe(III)- complex whereas, it behaves as a deprotonating agent in case of the rest of complexes.The investigated complexes exhibited low to moderate activities against S. aureus bacteria. For clarifying their proposed structures, the complexes were subjected to elemental analysis and spectral studies.

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