Schiff base ligands such as methyl 4-[(2-butyl-4-chloro-5-formyl-1H-imidazol-1-yl)methyl]benzoate thiosemicarbazone (L₁) and 2-butyl-4-chloro-5-formylimidazole 2,4-dinitrophenylhydrzone (L₂) are designed and synthesized via the reaction between methyl 4-[(2-butyl-4-chloro-5-formyl-1H-imidazol-1-yl)methyl]benzoate & thiosemicarbazide for L₁and 2-butyl-4-chloro-5-formylimidazole & 2,4-dinitrophenylhydrazine for L₂.Schiff bases are characterized by FT-IR, UV-visible, mass spectrometry,¹H and ¹³C-NMR spectral studies. These ligands are individually tested for their antimicrobial activities for both gram positive and gram negative to examine their inhibition potential by well diffusion method. The corrosion inhibition property of all the three ligands L₁, L₂ & L₃ on mild steel in 0.5 N HCl solution has been investigated at different concentrations and different temperatures by weight loss method. The biological activity of L₂ has shown better activity against gram negative bacteria such as E-coli, Klebsiella pneumonia, Acinetobacter baumannii, Pseudomonas aeruginosa and gram positive bacteria Staphylococcus aureus when compared to standard ligand L₃. All the three ligands exhibit good corrosion inhibition property on mild steel in 0.5N HCl solution even at 0.1% concentration level and the rate of corrosion of mild steel is increased with increase of temperature of corrosion medium.

中文翻译：

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咪唑类席夫碱的抗菌活性和缓蚀性能

席夫碱配体，例如4-[（（2-丁基-4-氯-5-甲酰基-1 H-咪唑-1-基）甲基]苯甲酸甲酯硫代半脲（L ₁）和2-丁基-4-氯-5-甲基通过4-[（2-丁基-4-氯-5-甲酰基-1 H-咪唑-1-基）甲基]苯甲酸甲酯与硫代氨基脲的反应设计合成甲酰咪唑2,4-二硝基苯hydr（L ₂）。大号₁和2-丁基-4-氯-5-甲酰基咪唑与2,4-二硝基苯肼对于L ₂ .Schiff碱基的特征在于通过FT-IR，UV-可见，质谱，¹ H和¹³C-NMR光谱研究。分别测试这些配体对革兰氏阳性和革兰氏阴性的抗菌活性，以通过良好扩散方法检查其抑制潜力。通过失重法研究了三种配体L ₁，L ₂和L ₃在0.5 N HCl溶液中在低碳钢上的缓蚀性能。与标准配体L ₃相比，L ₂的生物活性显示出对革兰氏阴性细菌（如大肠杆菌，肺炎克雷伯菌，鲍曼不动杆菌，铜绿假单胞菌和革兰氏阳性细菌金黄色葡萄球菌）具有更好的活性。。三种配体即使在浓度为0.1％的0.5N HCl溶液中也对低碳钢具有良好的缓蚀性能，并且随着腐蚀介质温度的升高，高碳钢的腐蚀速率也会增加。