Evaluation of DNA Binding, Cleavage, and Cytotoxic Activity of Cu(II), Co(II), and Ni(II) Schiff Base Complexes of 1-Phenylindoline-2,3-dione with Isonicotinohydrazide

Table 4

Electrochemical parameters for Cu(II), Co(II), and Ni(II) complexes.

Compound	Redox couple	Epa; (mV)	Epc; (mV)	ΔEp; (mV)	Ipa/Ipc
L–Cu	Cu(II)/Cu(I)	−214	−103	111	1.03
L–Co	Co(II)/Co(I)	790	610	180	0.82
L–Ni	Ni(II)/Ni(I)	521	384	137	0.91