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Synthesis of Nickel(II) Complexes of Novel Naphthalimide Based Heterodipodal Schiff Base Ligands, Structure, Characterization and Application for Degradation of Pesticides
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2020-06-18 , DOI: 10.1002/ejic.202000461 Jagpreet Singh Sidhu 1 , Pushap Raj 1 , Thangarasu Pandiyan 2 , Narinder Singh 1
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2020-06-18 , DOI: 10.1002/ejic.202000461 Jagpreet Singh Sidhu 1 , Pushap Raj 1 , Thangarasu Pandiyan 2 , Narinder Singh 1
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To degrade the highly toxic pesticide into less harmful components, we have synthesized four nickel complexes of naphthalimide based organic ligands. These complexes catalyze the hydrolysis of phosphorothioate bonds of organophosphates in an aqueous medium. The metal complexes {[Ni(L1)2]–[Ni(L4)2]} were synthesized by the electrochemical method and characterized using single‐crystal X‐ray crystallography and mass spectrometry. Analytical techniques revealed that complexes are mononuclear and possess octahedral geometry. The rate of degradation of chlorpyriphos and parathion methyl was evaluated using 31P NMR and LC‐MS chromatogram. The by‐product of chlorpyriphos upon catalytic degradation with complex was confirmed from mass spectrometry. It was found that chlorpyriphos degrade into 3,5,6‐trichloropyridin‐2‐ol after 50 minutes of incubation with catalyst. However, parathion methyl took only 20 minutes to hydrolyze into its by‐product. Moreover, the inhibition assay of acetylcholinesterase was performed for pesticides in the presence of metal complex and the interesting outcome was recorded.
中文翻译：
新型基于萘二甲酰亚胺的异双足席夫碱配体的镍（II）配合物的合成，结构，表征及其在农药降解中的应用
为了将剧毒农药降解为危害较小的组分，我们合成了四种萘二甲酰亚胺基有机配体的镍配合物。这些络合物在水性介质中催化有机磷酸酯的硫代磷酸酯键的水解。金属配合物{[Ni（L 1）2 ]-[Ni（L 4）2 ]}是通过电化学方法合成的，并利用单晶X射线晶体学和质谱法进行了表征。分析技术表明，复合物是单核的并且具有八面体的几何形状。使用31评估了毒死pho和甲基对硫磷的降解率P NMR和LC-MS色谱图。质谱证实了毒死pho在配合物催化降解后的副产物。发现在与催化剂孵育50分钟后，毒死py降解为3,5,6-三氯吡啶-2--2-醇。但是，甲基对硫磷仅需20分钟即可水解成副产物。此外，在金属络合物存在下对农药进行了乙酰胆碱酯酶的抑制试验，并记录了令人感兴趣的结果。
更新日期：2020-08-24
中文翻译：
新型基于萘二甲酰亚胺的异双足席夫碱配体的镍（II）配合物的合成，结构，表征及其在农药降解中的应用
为了将剧毒农药降解为危害较小的组分，我们合成了四种萘二甲酰亚胺基有机配体的镍配合物。这些络合物在水性介质中催化有机磷酸酯的硫代磷酸酯键的水解。金属配合物{[Ni（L 1）2 ]-[Ni（L 4）2 ]}是通过电化学方法合成的，并利用单晶X射线晶体学和质谱法进行了表征。分析技术表明，复合物是单核的并且具有八面体的几何形状。使用31评估了毒死pho和甲基对硫磷的降解率P NMR和LC-MS色谱图。质谱证实了毒死pho在配合物催化降解后的副产物。发现在与催化剂孵育50分钟后，毒死py降解为3,5,6-三氯吡啶-2--2-醇。但是，甲基对硫磷仅需20分钟即可水解成副产物。此外，在金属络合物存在下对农药进行了乙酰胆碱酯酶的抑制试验，并记录了令人感兴趣的结果。
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