Nanocrystalline Mixed Ligand Complexes of Cu (II), Ni (II), Co (II) with N, O Donor Ligands: Synthesis, Characterization, and Antimicrobial Activity

In present investigation nanocrystalline mixed ligand complexes were synthesized using 8-hydroxyquinoline, salicylaldoxime with metals like Cu (II), Ni (II) and Co (II). The metal: ligand ratio was found to be 1:1:1. These complexes were characterized using electronic spectra, FTIR spectra, elementa...

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Bibliographic Details
Published in:Oriental journal of chemistry 2016-01, Vol.32 (6), p.2999-3013
Main Authors: H, Kolhe, S, Jadhav, H, Shaikh, J, Takate, J, Aware
Format: Article
Language:English
Subjects:
Alcohol
Antiinfectives and antibacterials
Antimicrobial agents
Bacteria
Coordination compounds
Copper
Diamagnetism
Electronic spectra
Fourier transforms
Grain size
Hydroxyquinoline
Ligands
Magnetic permeability
Nanocrystals
Nickel
Quantum dots
Resistance
Scanning electron microscopy
Thermal analysis
Thermogravimetric analysis
X ray powder diffraction
X-ray diffraction
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Summary:In present investigation nanocrystalline mixed ligand complexes were synthesized using 8-hydroxyquinoline, salicylaldoxime with metals like Cu (II), Ni (II) and Co (II). The metal: ligand ratio was found to be 1:1:1. These complexes were characterized using electronic spectra, FTIR spectra, elemental analysis, magnetic susceptibility, thermogravimetric analysis, conductivity measurement, powder X-ray diffraction and Scanning Electron Microscopy with electron dispersive spectroscopic methods. The electronic spectra of complexes suggest that they have square planer geometries. In FTIR analysis characteristic bands of ν (M-N) and ν (M-O).The Co (II) and Cu (II) complexes are paramagnetic in nature and these had square planer geometry. While Ni (II) complexes are diamagnetic nature and having square planer geometry. The thermal analysis of complexes was studied in an attempt to assign intermediate compounds. Low molar conductance values indicate non – electrolytic nature of the complexes. The Powder X-ray diffraction study shows formation of nanocrystalline phase as well as the grain size of complexes is less than 10 nm. The EDS study is shows good agreement for formation of mixed ligand metal complexes . Complex: [C16H12CuN2O2], [C14H12N2NiO4 ], [C16H12NiN2O2] and [C16H12CoN2O2] had antimicrobial activity against four bacteria tested. Bacteria were resistant to other five complexes.
ISSN:0970-020X
2231-5039
DOI:10.13005/ojc/320620