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A b s t r a c t . 1: 1-complexes of lead(1V) with these tetradentate SCHIFF bases have been prepared in the pure form. These are non-electrolytes in DMF, and hence can be considered to have octahedral configuration. The I R spectra of the complexes show no pattern for H-bonded OH. The phenolic C-0 stretch shows a shift towards longer wavelengths. The C=N stretch shows a shift suggesting possible co-ordination through nitrogen of the azomethine group.