摘要:
A new dinucleating ligand N,N'-diphenyl-N,N'-di(pyridin-2-yl)oxalohydrazide (GampH(2)) has been synthesized and GampH(2) gave rise to complex [Fe-2(Gamp)(DMF)(2)Cl-4], 1 with FeCl3 salt and 1 was isolated as shiny blue crystalline solid. The molecular structure of complex 1 was characterized by X-ray crystallography. In this dinuclear complex, Fe-Fe separation was found to be 5.49 angstrom and variable temperature magnetic moment was examined. Electrochemical investigation afforded a quasireversible redox couple with E-1/2 value of 0.144 V vs Ag/AgCl. Complex 1 was efficient in DNA cleavage activity and enhancement of DNA cleavage was observed in the presence of 2-mercaptoethanol and hydrogen peroxide. Investigation of mechanism indicated possible involvement of hydroxyl radical in nuclease activity. (C) 2012 Elsevier By. All rights reserved.