Synthesis and Characterization of Mn(II) ,Co(II) ,Ni(II) ,Cu(II) ,Zn(II) and Cd(II) Complexes with Di-Schiff Bases Derived from o- or m- Phenylenediamine and 9,10-Phenanthrenequinone

Abstract

Aseries of new complexes of the type [MLCl 2 ] where M=Mn (II),Co(II),Ni(II),Cu(II),Zn(II),Cd(II) L=L 1 or L 2 represents di-Schiff base ligands: {L 1 =(N,N'E,N,N'E)-N,N'-(phenanthrene-9,10-diylidene) bis (benzene-1,2-diamine). L 2 =(N,N'E,N,N'E)-N,N'-(phenanthrene-9,10-di ylidene)bis(benzene-1,3-diamine)} have been prepared in (1:1)(M:L) molar ratio and charactrerized by electrical conductivity,magnetic moment, IR , UV-VIS and metal content analysis. Synthesis and Characterization of Mn(II) ,Co(II) ,Ni(II) ,Cu(II) …. 94 Conductivity data in DMF and DMSO solution showed that all complexes are non-electrolytes. Magnetic moment and electronic spectra indicate that some of the complexes have a tetrahedral geometry and the others have an square planar environment. The antibacterial activity against E.coli and S.aureus of L 1 and L 2 and some of their complexes derived from Cu(II) and Zn(II) illustrates that the complexes have higher activity than the corresponding organic ligand.