Um novo ligante macrocíclico binucleador, N,N-bis(2,6-diiminometil-1-hidroxifenil)malonoildicarboxamida, foi preparado. Seus complexos metálicos foram preparados pelo método da moldagem por metal, através das reações de 2,6-diformil-4-metilfenol, malonoil diidrazida com os cloretos metálicos de Cu(II), Ni(II), Co(II), Cd(II), Zn(II) e Hg(II), em methanol, que levaram à formação de uma série de complexos dinucleares. Os complexos foram caracterizados por análises elementares, medidas de conductividade, dados de susceptibilidade magnética, IR, UV-Vis, EPR, RMN e dados de espectrometrica de massas-FAB. A natureza dinuclear dos complexos foi confirmada pelas análises elementares e dados de susceptibilidade magnética, EPR e de espectrometria de massas-FAB. O ligante e os complexos de Cu(II), Ni(II), Co(II) e Zn(II) tiveram suas atividades antibacteriana e antifúngica testadas contra Escherichia coli, Staphyloccocus aureus, Aspergillus niger e Fusarium oxysporum. As medidas de susceptibilidade magnética dos complexos de Cu(II), Ni(II) e Co(II) revelaram que estes complexos exibem acoplamento antiferromagnético devido à presença de dois íons metálicos próximos um do outro. O espectro de massas-FAB do complexo de Cu(II) forneceu evidencia clara da sua natureza dinuclear. O ligante e os complexos exibiram atividade muito fraca contra as bactérias testadas, entretanto, o ligante mostrou-se ativo contra o fungo Fusarium oxysporum.
A phenol based novel macrocyclic binucleating compartmental ligand N,N-bis(2,6-diiminomethyl-4-methyl-1-hydroxyphenyl)malonoyldicarboxamide was prepared. The complexes were prepared by template method by reacting 2,6-diformyl-4-methylphenol, malonoyl dihydrazide and the metal chlorides of Cu(II), Ni(II), Co(II), Cd(II), Zn(II) and Hg(II) in methanol to get a series of dinuclear complexes. The complexes were characterized by elemental analyses, conductivity measurements, magnetic susceptibility data, IR, UV-Vis, ESR, NMR and FAB mass spectral data. The dinuclear nature of the complexes was confirmed on the basis of elemental analyses, magnetic susceptibility, ESR and FAB mass spectral data. The ligand as well as Cu(II), Ni(II), Co(II) and Zn(II) complexes were tested for their antibacterial and antifungal properties against Escherichia coli, Staphyloccocus aureus, Aspergillus niger and Fusarium oxysporum. Magnetic susceptibility measurements of Cu(II), Ni(II) and Co(II) complexes reveal that these complexes exhibit antiferromagnetic coupling behavior due to the presence of two metal ions in close proximity. FAB mass spectrum of the Cu(II) complex gave a clear evidence for the dinuclear nature. The ligand and the complexes were found to be less active against the tested bacteria, but the ligand alone was found active against the fungus Fusarium oxysporum.