Synthesis, Characterization and Antibacterial Activities of Manganese(II), Nickel(II), Copper(II) and Zinc(II) Complexes of the Hydrazone Compounds Derived from 1-Phenyl-3-methyl-4-acyl-pyrazole and Benzoyl Hydrazine
摘要:
锰(II)、镍(II)、铜(II)和锌(II)配合物是由对应的金属醋酸盐与 1-苯基-3-甲基-4-酰基吡唑和苯甲酰肼衍生的腙配体(L1-L3)反应制备的。配体(L1-L3)和金属配合物通过元素分析以及 1H NMR 和 IR 等光谱技术进行了表征。采用盘扩散法研究了配体(L1-L3)和金属配合物对大肠杆菌和枯草杆菌的抗菌活性。结果表明,游离配体对这两种细菌或多或少没有活性,配体与金属离子配位后,抗菌能力更加明显。苯甲酸 [1-(5-甲基-3-氧代-2-苯基-2,3-二氢-1H-吡唑-4-基)亚乙基]酰肼(L1)的铜(II)配合物对两种受测细菌的生长有明显的抑制作用。
Synthesis, Characterization and Antibacterial Activities of Manganese(II), Nickel(II), Copper(II) and Zinc(II) Complexes of the Hydrazone Compounds Derived from 1-Phenyl-3-methyl-4-acyl-pyrazole and Benzoyl Hydrazine
Manganese(II), nickel(II), copper(II) and zinc(II) complexes were prepared by the reactions of the correspondence metal acetate and the hydrazone ligands (L1-L3) derived from 1-phenyl-3-methyl-4-acyl-pyrazole and benzoyl hydrazine. The ligands (L1-L3) and metal complexes were characterized by elemental analysis and spectroscopic techniques such as 1H NMR and IR. Antimicrobial activity studies of (L1-L3) and the metal complexes against Escherichia coli and Bacillus subtilis were carried out by using disc diffusion method. The results indicate that the free ligands are more or less inactive against the two bacteria, the antibacterial abilities of the ligands become more pronounced when they are coordinated to the metal ions. The copper(II) complex of the benzoic acid [1-(5-methyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)ethylidene]hydrazide (L1) shows a significant inhibition to the growth of the two tested bacteria.
锰(II)、镍(II)、铜(II)和锌(II)配合物是由对应的金属醋酸盐与 1-苯基-3-甲基-4-酰基吡唑和苯甲酰肼衍生的腙配体(L1-L3)反应制备的。配体(L1-L3)和金属配合物通过元素分析以及 1H NMR 和 IR 等光谱技术进行了表征。采用盘扩散法研究了配体(L1-L3)和金属配合物对大肠杆菌和枯草杆菌的抗菌活性。结果表明,游离配体对这两种细菌或多或少没有活性,配体与金属离子配位后,抗菌能力更加明显。苯甲酸 [1-(5-甲基-3-氧代-2-苯基-2,3-二氢-1H-吡唑-4-基)亚乙基]酰肼(L1)的铜(II)配合物对两种受测细菌的生长有明显的抑制作用。