Synthesis and characterization of lanthanide complexes of schiff bases

Abstract

The reaction of acetone-2-thenoylhydrazone (ath) with LnCl₃.nH₂O yields compounds of the composition [Ln(ath)₃CI₂]Cl while complexes of the type lLn( thdth)₂CI₂]Cl [where thdth =2,2,6,6-tetramethyl- 3,5-heptanedione-2-thenoylhydrazone; Ln =La(III), Pr(lII), Nd(III), Sm(III), Eu(III), Gd(III), Tb(III) and Dy(III)] have been synthesized through the metal template effect. The complexes have been characterized by elemental analysis, magnetic, IR, electronic and emission spectral studies. The unit lattice of [Tb(thdth]₂CI₂]CI belongs to tetragonal crystal lattice having one molecule per unit lattice.