摘要 : A number of complexes of transition metals have been synthesized by the reaction of metal salts of Zinc, Nickel, Cobalt, and Copper with the prepared Schiff base hydrazones, namely, N', N ''-[1,4-phenylenedi(methylylidene)] bis(4-... 展开 A number of complexes of transition metals have been synthesized by the reaction of metal salts of Zinc, Nickel, Cobalt, and Copper with the prepared Schiff base hydrazones, namely, N', N ''-[1,4-phenylenedi(methylylidene)] bis(4-nitrobenzohydrazide) [L'], N', N ''-[1,4-phenvlenedi(methylylidene)]bis(4-chlorobenzohydrazide) [L-2], and N', N ''-[1,4-phenylenedi(methylylidene)]bis(2-nitrobenzohydrazide) [L-3]. These Schiff bases were prepared by reacting terephthaldehyde with derivatives of benzhydrazide. Various spectroscopic tools were used for thorough analysis of the prepared complexes. The thermal stability of the synthesized compounds was checked by thermogravimetric analysis. Heteroatoms, that is, oxygen and nitrogen were found to be responsible for the bonding between the metal ions and the ligands. Bacterial species such as Gram-negative Escherichia coli, Gram-negative Pseudomonas aeruginosa, Gram-positive Staphylococcus aureus, and Gram-positive Bacillus subtilis were utilized to analyze the antibacterial actions of the Schiff base hydrazine ligands and their metal chelates. Furthermore, two fungi, namely, Candida albicans and Aspergillus niger were also used to determine the antifungal action of the derived complexes. Interestingly, the antibacterial as well as the antifungal activities of metal complexes were found to be much higher than those of free Schiff base hydrazones. 收起