Synthesis And Structural Studies Of A New Polydentate Ligand And Its Ni (ii) And Zn (ii) Complexes

A new polydentate ligand N-(2-hydroxyphenyl)-2-[(2-aminophenylamino)] acetamide,rn(HPAPAA) has been synthesized in the reaction between N-(2-hydroxyphenyl)-2-rnchloroacetamide and o-phenylenediamine. The Ni (II) and Zn (II) complexes of thernligand were synthesized and characterized on the basis of their spectral (IR, NMR, UVVis,rnand AAS), elemental analyses, conductivity and magnetic susceptibilityrnmeasurements. The Ni (II) and Zn (II) metal complexes were synthesized in methanolicrnmedia. Metal-to-ligand ratios were found to be 1:1 for both complexes. Conductivityrnmeasurements suggested that both complexes were non-electrolytes. Binuclear Ni (II)rncomplex exhibited subnormal magnetic moments indicating the possibility ofrnantiferromagnetic interaction through a possible super exchange mechanism. The ligandrnbehaves as dibasic tridentate, employing ONO donor sequence in chelation includingrnphenoxide bridging. Based on the analytical, infrared, conductivity, magneticrnsusceptibility and electronic spectral data it may be concluded that octahedral geometryrnfor Ni (II) complex and, square planar geometry for Zn (II) complex was suggested.

Get Full Work

Report copyright infringement or plagiarism