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Synthesis, characterization, structural studies and biological activity of a new schiff base- Azo ligand and its complexation with selected metal ions

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dc.citedby19
dc.contributor.authorAbbas Sh Al-Hamdani A.L.I.en_US
dc.contributor.authorShaker S.A.en_US
dc.contributor.authorid54419487100en_US
dc.contributor.authorid31767661500en_US
dc.date.accessioned2023-12-28T07:05:43Z
dc.date.available2023-12-28T07:05:43Z
dc.date.issued2011
dc.description.abstractThe new hexadentate Schiff base ligand L [4, 4'(3Z, 3'Z)-3, 3'-(ethane-1, 2-diylbis(azan-1 -yl-1 ylidene))bis(1, 5-dimethyl-2-phenyl-2, 3-dihydro-1/+pyrazole-yl-3-ylidene)bis(diazene-2,1-diyl)bis(3aminophenol)] has been synthesized from condensation of 4-(2-amino-4-hydroxy-phenylazo)-1, 5dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one (azo) with ethane-1,2- diamine. Monomeric complexes with the general formula [M(L)]CI2 wher M = Co(II), Ni(II), Cu(II)and Zn(II) are reported.The structures of new ligand, mode of bonding and overall geometry of the complexes were determined through IR, UV-Vis, and NMR spectral studies, magnetic moment measurements, elemental analysis, metal content, and conductance. These studies revealed octahedral geometries for all complexes. Complex formation studies via molar ratio and continuous variation methods in DMF solution were consistent to those found in the solid complexes with a ratio of (M : L) as (1:1 ). Hyper Chem-6 program has been used to predict structural geometries of compounds in gas phase. The heat of formation (?H,1) and binding energy (?Eb) at 298 K for the free ligand and its metal complexes was calculated by PM3 method. Biological activity of the ligand and its metal complexes against several organisms, Escherichia coli and Staphylococcus aureup are reported. Compounds exhibited the high effect of activity. This may be attributed to the impact of both the chelate effect of Schiff base ligand and the role of the metal in these complexes.en_US
dc.description.natureFinalen_US
dc.identifier.epage845
dc.identifier.issue3
dc.identifier.scopus2-s2.0-82955226482
dc.identifier.spage835
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-82955226482&partnerID=40&md5=a0977da2f5f7e05cca90a84bc8a20293
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/29588
dc.identifier.volume27
dc.pagecount10
dc.sourceScopus
dc.sourcetitleOriental Journal of Chemistry
dc.subjectHexadentate ligand
dc.subjectSchiff base-azo
dc.subjectStructural studies and biological activity
dc.titleSynthesis, characterization, structural studies and biological activity of a new schiff base- Azo ligand and its complexation with selected metal ionsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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