Abstract
Four new Ni(II) complexes of general formula [Ni(H2-Qtsc-R)2](NO3)2 (H2-Qtsc-R = 4N-substituted thiosemicarbazones of 2-oxo-1,2-dihydroquinoline-3-carbaldehyde, where R = H (1), Me (2), Et (3), or Ph (4)) have been synthesized and characterized. The geometry of the complexes was confirmed by single crystal X-ray crystallography for one of the complexes (3). The binding affinity of the complexes with DNA and protein have been studied which indicate that they could interact with calf thymus DNA and bovine serum albumin protein. Investigations of antioxidative properties showed that all the complexes have strong radical scavenging properties. Cytotoxic studies showed that the complexes exhibited effective cytotoxic activity against a panel of human cancer cells without affecting the normal cells much.
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