Transition Metal Complexes of Some Schiff Bases Derived from 2-Amino-4-Phenyl-5-Arylazothiazoles and Salicylaldehyde

Four new Schiff bases were synthesized by the condensation of salicylaldehyde and 2-amino-4-phenyl-5-arylazothiazoles. Metal complexes of the type M(SchB)2 and M′(Sch.B)3 where M = Pd(II) M′ = Rh(III), Ru(III), Fe(II1) and SchB = different newly synthesized monobasic Schiff bases were prepared and characterized on the basis of chemical analysis, conductance measurements, magnetic moments, infrared and electronic spectral studies. Mössbauer spectral studies of iron complexes were also done. Palladium complexes were of square planar structure whereas the Fe(III), Rh(III) and Ru(III) complexes were of octahedral structure. The Schift bases acted as bidentate ligands, coordinating with the metals through their ezomethine and deprotonated phenolic groups.