SYNTHESIS AND CHARACTERIZATION OF LANTHANIDE COMPLEXES OF SCHIFF-BASES

The reaction of acetone-2-thenoylhydrazone (ath) with LnCl(3).nH(2)O y ields compounds of the composition [Ln(ath)(3)Cl-2]Cl while complexes of the type [Ln(thdth)(2)Cl-2]Cl [where thdth = 6-tetramethyl-3,5-hept anedione-2-thenoylhydrazone; LN = La(III), Pr(III), Nd(III), Sm(III), Eu(III), Gd(III), Tb(III) and Dy(III)] have been synthesized through t he metal template effect. The complexes have been characterized by ele mental analysis, magnetic, IR, electronic and emission spectral studie s. The unit lattice of [Tb(thdth)(2)Cl-2]Cl belongs to tetragonal crys tal lattice having one molecule per unit lattice.