Spectral and Biological Studies of Ni(II),Pd(II),Pt(IV)and Cu(II)Complexes with Novel Azamacrocyclic Ligand

摘要

Complexes of Ni(II),Pd(II),Pt(IV)and Cu(II)with a novel azamacrocyclic ligand viz.5,7,12,14-tetramethyl-l,2,4,8,10,ll-hexaazacyclotetradeca-4,7,ll,14-tetraene-3,9-dione(L)were synthesized and characterized by elemental analysis,molar conductance,magnetic susceptibitity,mass spectra,~1H NMR(L),FT-IR and electronic spectral studies.In molecular modeling,the geometry of ligand(L)was fully optimized with respect to the energy using the 6-31g(d,p)basis set.On the basis of these spectral studies a distorted octahedral geometry was assigned for Ni(IT)complex,square planar for Pd(II),octahedral and tetragonal geometry for Pt(IV)and Cu(II)complexes respectively.The ligand and its metal complexes were screened in vitro against some species of bacteria and plant pathogenic fungi.Electrochemical behaviour of nickel and copper complexes were studied by cyclic voltammetry.