A Study of Metal Complexes of 2-picolinic Acid

The metal (II) complexes of picolinic acid are prepared in non- aqueous medium and its complexes are characterized by spectral studies (Infra-red spectroscopy, UV-Visible spectroscopy, 1H-NMR spectroscopy and ESR spectroscopy), conductance, magnetic susceptibility and thermal analysis. On heating, t...

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Bibliographic Details
Published inOriental journal of chemistry Vol. 38; no. 3; pp. 753 - 761
Main Authors Prema, S, Leema, Rose A
Format Journal Article
LanguageEnglish
Published Bhopal Oriental Scientific Publishing Company 30.06.2022
Subjects
Acids
Aqueous solutions
Biological activity
Coordination compounds
Copper
Decomposition
Electrochemical analysis
Electrolytes
Electronic spectra
Ethanol
Geometry
Ligands
Magnetic permeability
Microorganisms
Nickel
Nitrogen
NMR spectroscopy
Spectroscopic analysis
Spectrum analysis
Thermal analysis
Zinc
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Summary:The metal (II) complexes of picolinic acid are prepared in non- aqueous medium and its complexes are characterized by spectral studies (Infra-red spectroscopy, UV-Visible spectroscopy, 1H-NMR spectroscopy and ESR spectroscopy), conductance, magnetic susceptibility and thermal analysis. On heating, the complexes decompose at temperature above 260C. It revealed that all the complexes were stable. The FT-IR evidenced the C=O, C=N, O-H, C=C, and M-O functionalities of all the metal complexes along with corresponding ligands. Thermogravimetric study showed that there is no water molecule in the complexes. The electrochemical behavior of all metal complexes was investigated. From the electronic spectra the geometries of cobalt, nickel and copper is found to be Octahedral, Octahedral, and Distorted octahedral respectively. The complexes of the ligand are evaluated for anti-microbial activity hostile to fungal and bacterial strains. The nickel (II) complex reveals excellent inhibition again the selected four bacterial strains compare with other complexes.
ISSN:0970-020X
2231-5039
DOI:10.13005/ojc/380328