Synthesis and Characterization of some lanthanide Metal ions Complexes of Schiff Bases derived From p-fluoro benzoic acid and thiosemicarbazide

Reaction  of   p-fluoro  benzoic  acid with the thiosemicarbazide and salcialdehyde gave the new bidentate ligand  .The prepared  ligand Identified by  FT-I.R and  U.V-Visible spectcopic technique .Treatment of the prepared    ligand    with following metal ions   M=Tb(III),Eu(III),Nd(III) and La(III)  ,in ethanol with a (1:1)  M:L ratio and at pH=7 yielded series of  neutral complexes as the  general  formula   [M LCl2(H2O)2]. The prepared complexes were characterized using (FT-IR, UV-Vis)  spectra , melting point, molar conductivity  measurements . chloride ion content were also evolution by (mhor method) . The proposed structure of the complexes using program , chem office 3D(2004)