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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
Author(s) -
Sidhu Jagpreet Singh,
Raj Pushap,
Pandiyan Thangarasu,
Singh Narinder
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000461
Subject(s) - chemistry , hydrolysis , schiff base , nickel , catalysis , mass spectrometry , nuclear chemistry , octahedral molecular geometry , degradation (telecommunications) , metal , medicinal chemistry , chromatography , organic chemistry , stereochemistry , telecommunications , computer science
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(L 1 ) 2 ]–[Ni(L 4 ) 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 31 P 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.