Synthesis, characterization and biological activities of lanthanum (III) complexes with indole schiff bases

Abstract

A few complexes of lanthanum (111) chloride have been prepared by reacting with 3-phenyl-5-substituted indole-2-carboxy hydrazones in alcohol medium. All the complexes are yellow in colour and non-electrolytes in DMF and DMSO. These complexes were characterized using conductivity measurements, IR thermal and (HNMR)-H-1 spectra. Elemental analysis confirm a stoichiometry 1:2 of the type LaL2, C1.H2O. A six coordinate environment for La (III) is proposed.