Platinum and palladium complexes with 2,4-Dinitrophenylhydrazine: synthesis and cytotoxic activity

Abstract

New complexes of platinum and palladium were isolated with 2,4-dinitrophenylhydrazine (2,4-DNPH). These complexes were characterized and the results shown that the ligand is coordinated to platinum or palladium by the basic nitrogen of NH2 group and have the general structure cis-[M(2,4- DNPH)2Cl2 ].H2O where M = Pt or Pd. The thermal stability of the complexes was followed in the temperature range 25-850 ºC. The antitumor activity of the synthesized compounds has been studied and the compound cis-[Pt(2,4-DNPH)2Cl2 ], was found to display cytotoxicity (IC50 = 4.6 μmol/L) against K562 tumoral cell line. This work is the first to describe the cytotoxic activity of complexes containing 2,4-dinitrophenylhydrazine