Nickel(II) complexes of the following Schiff base ligands derived from 4-(dimethylamino)benzaldehyde were synthesised: (Z)-1-(4-(dimethylamino)benzylideneamino)-propan-1-ol through condensation with 1-amino-propan-1-ol, (N1E,N2E)-N1,N2-bis(4-dimethylamino)benzylidene)benzene-1,2-diamine through condensation with benzene-1,2-diamine and 2-((4-dimethylamino)benzylidene)amino)phenol through condensation with 2-aminophenol. The synthesised Schiff bases and the resultant Ni(II) complexes were all isolated as crystals and characterized by melting point, elemental analysis, infrared spectroscopy, NMR spectroscopy, mass spectrometry and by conductance measurements. Antioxidant activity of the Ni(II) complexes was tested by assay with the free radical compound 2,2-diphenyl-1-picrylhydrazyl (DPPH).
Nighat Nawaz, Irshad Ahmad, Nizam M. Darwesh, Amjad Wahab, Sadeeq ur Rahman, Abdul Sajid, Farhan A. Khan, Sher B. Khan, Simon G. Patching and 1Kamal Uddin
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