Preparation and Properties of Metal Complexes with New Asymmetric Pentadentate Schiff Base Ligands

Abstract Two new asymmetric pentadentate tribasic Schiff bases with a N2O3, donor set were prepared which contain two adjacent coordinating compartments capable of coordinating two similar or dissimilar metal cations. Mononuclear complexes were obtained which react with metal cations to produce homo- or hctero-, bi- or tri-nuclear complexes. The structures of the complexes were inferred from chemical analyses, electronic and IR spectra and by conductance and magnetic measurements. Both Ni(II) and Cu(II) coordinate either to mixed nitrogen and oxygen or oxygen and chlorine donating atoms while UO2+ 2 coordinates to oxygen atoms only.

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