No abstract

No abstract

No abstract

A new series of binary and ternary complexes of zirconium(IV) with N-naphthylideneamino acids and some imidazoles has been synthesized. The complexes were characterized on the basis of elemental analyses, 1 H NMR, IR and electronic spectra, conductivity, and thermal analytical data. It was found that N-naphthylideneamino acids act as divalent tridentate (ONO) Schiff bases, whereas the imidazoles behave as monodentate ligands. The involvement of anions (OAc 2 and Cl 2 ) in coordination was explored. The apparent formation constant values of Zr(IV) -Schiff base binary complexes were determined by a continous-variation spectrophotometric method. Voltammetric results indicate that some of the prepared complexes underwent two successive, irreversible and reversible one-electron charge transfer steps coupled with a follow-up chemical reaction. The stability and redox properties of complexes are discussed in relation to the ligand molecular structure.

No abstract