RESUMO

M(II) coordination compounds of Mn, Fe, Co and Ni with a Schiff base (HL) derived from the condensation of cephaclor antibiotic with 1,2-diaminobenzene were synthesized and characterized by several techniques, including elemental and thermal analysis, molar conductance and magnetic susceptibility measurements, electronic, FT-IR, EPR and (1)H NMR spectral studies. The analytical and molar conductance values indicated that the chloride ions coordinate to the metal ions. Based on these studies, the general formulae [M(L)Cl(H2O)] (M(II)=Mn, Fe, Co, Ni) are proposed for the complexes. The ligand HL behaves as a monoanionic tetradentate NNNO chelating agent.

Assuntos

Cefaclor/química , Complexos de Coordenação/química , Fenômenos Magnéticos , Fenilenodiaminas/química , Bases de Schiff/química , Bases de Schiff/síntese química , Elementos de Transição/química , Espectroscopia de Ressonância de Spin Eletrônica , Elétrons , Espectroscopia de Ressonância Magnética , Espectrofotometria Infravermelho , Vibração