Structural and microbial studies of some transition metal complexes

Area of Science:

• Coordination Chemistry
• Medicinal Chemistry
• Materials Science

Background:

• N-pyridinobenzamide-2-carboxylic acid is a novel synthesized ligand.
• Metal complexes of transition metals can exhibit unique biological properties.
• Understanding ligand-metal interactions is crucial for developing new therapeutic agents.

Purpose of the Study:

• To synthesize and characterize N-pyridinobenzamide-2-carboxylic acid and its binary and ternary metal complexes.
• To evaluate the antibacterial and antifungal activities of the synthesized compounds.
• To investigate the impact of metal coordination on the biocidal properties of the ligand.

Main Methods:

• Synthesis of N-pyridinobenzamide-2-carboxylic acid and its Cu(II), Ni(II), Co(II), and Zn(II) complexes.
• Characterization using elemental analysis, molecular weight, molar conductance, IR, electronic spectra, and magnetic measurements.
• Determination of antibacterial activity against Staphylococcus aureus and Escherichia coli.
• Determination of antifungal activity against Aspergillus niger, Aspergillus nidulense, and Candida albicans.

Main Results:

• Successful synthesis and characterization of the ligand and its metal complexes.
• Metal complexes showed significant antibacterial activity against both gram-positive and gram-negative bacteria.
• Enhanced antifungal activity was observed for the metal complexes against tested fungi.
• Coordination with metal ions led to a considerable increase in biocidal activity compared to the free ligand.

Conclusions:

• N-pyridinobenzamide-2-carboxylic acid and its metal complexes possess notable antimicrobial properties.
• Metal coordination significantly enhances the antibacterial and antifungal efficacy of the ligand.
• These findings suggest potential applications of these metal complexes as antimicrobial agents.