Synthesis, characterization and cytotoxicity of mixed ligand Mn(II), Co(II) and Ni(II) complexes

Abstract

Complexes of the type [ML'L(OH)(H2O)] {where M= Ni(II), Co(II) or Mn(II), L'= isatin and HL= 3-(2-phenylhydrazono)acetylacetone, 3-(2-(4-chlorophenyl)hydrazono)acetylacetone or 3-(2-(4-bromophenyl)hydrazono)-acetylacetone} have been synthesized by equimolar reaction of a metal(II) chloride with isatin and 3-(2-(aryl)hydrazono)acetylacetone. The resulting complexes have been characterized by elemental analyses, molar conductivity, spectral data (IR, 1H NMR, mass) and magnetic moments. Furthermore, the ligands and their metal complexes have been screened for their cytotoxicity against different human cancer cell lines by using SRB assay. The results showed that most of the mixed ligand metal complexes have high cytotoxicity in comparison with the reference drugs used.