Abstract
Abstract 2, 6-Diacetylpyridine (N-benzoyl)glycylhydrazone, dapbgh, has been prepared and characterised. Lanthanide metal complexes of the empirical formula [Ln(dapbgh)2] C13.H2O, where Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy and Y, have been synthesized and characterised by elemental analyses, electrical conductance, magnetic susceptibility, electronic, infrared and nmr (1H and 13 C) studies. Various bonding parameters have been calculated from the electronic spectra of Pr(III), Nd(III), Sm'(III) and Dy (III) complexes. The theoretical oscillator strengths (Pcalc.) calculated from the Judd-Ofelt equation were found to be in good agreement with the experimental values. An appropriate mean metal-ligand distance, RLn_O A, in case of the Pr(III) complex was found to be 2.5 A.
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