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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Antibacterial activity of silver camphorimine coordination polymers
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Antibacterial activity of silver camphorimine coordination polymers

机译：银樟脑碱配位聚合物的抗菌活性

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摘要

Five new silver camphorimine complexes of general formula [Ag(NO3)L-Y] were synthesized and fully characterized using spectroscopic and analytical techniques. The structure of [Ag(NO3) (OC10H14NC6H4NC10H14O)] (III) was analyzed using single crystal X-ray diffraction, showing that it arranges as a coordination polymer formed by sequential Ag(NO3) units bridged by the bi-camphor ligand (L-2A). The antimicrobial properties of the new complexes were screened using the disk diffusion method and their Minimal Inhibitory Concentrations (MIC) were assessed against selected bacterial strains of the Gram-positive Staphylococcus aureus and the Gram-negative Escherichia coli, Pseudomonas aeruginosa, and Burkholderia contaminans. The lowest MICs were observed for III, with estimated values of 72, 20, 32 and 19 mu g mL(-1) for S. aureus, E. coli, B. contaminans, and P. aeruginosa, respectively. In the case of S. aureus, similar MIC values were obtained for silver nitrate and compound III. All five compounds were bactericidal when used in concentrations equal or above the MIC value, as found by enumerating the total colony forming units (CFUs) after incubation in their presence.
机译：合成了五种新的通式[Ag（NO3）L-Y]的樟脑碱银配合物，并使用光谱和分析技术对其进行了全面表征。使用单晶X射线衍射分析了[Ag（NO3）（OC10H14NC6H4NC10H14O）]（III）的结构，表明其排列成由双胶体配体（L）桥接的连续Ag（NO3）单元形成的配位聚合物-2A）。使用圆盘扩散法筛选了新复合物的抗菌特性，并针对所选革兰氏阳性金黄色葡萄球菌和革兰氏阴性大肠杆菌，铜绿假单胞菌和伯克霍尔德氏菌的细菌菌株评估了其最低抑菌浓度（MIC）。 III观察到最低的MIC，金黄色葡萄球菌，大肠杆菌，污染的B. contaminans和铜绿假单胞菌的MIC分别为72、20、32和19μgmL（-1）。在金黄色葡萄球菌的情况下，硝酸银和化合物III的MIC值相似。当以等于或高于MIC值的浓度使用时，所有五种化合物均具有杀菌作用，这是通过在它们存在下孵育后枚举的总菌落形成单位（CFU）得出的。

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