Rare earths complexes of single arm N – aryl Schiff base ligand

Khalil Khalaf Abid[1], Sadeem Mohammad Al-Barody[1a] , Haslina Ahmad[2]
Page No. 71-81

A synthesized ligand N – ( 2 – hydroxyphenyl) – 4 – n – butylsalicylaldimine (H2L) was used to
prepare a series of mononuclear lanthanide complexes of the type [LnH2L(HL)2Cl] (Ln =LaIII,
CeIII, SmIII and GdIII). The ligand and complexes were characterized by 1H, 13CNMR, elemental
analysis (CHNO), FT-IR spectroscopy, GC-mass, Magnetic susceptibility Molar Conductivity and
Thermo gravimetric analysis (TGA). Investigation of complexes suggest that two ligand molecules
behaves as tridentate and the third one as bidentate as it present in zwitter ionic form with an
additional one chloride ion to complete nine coordination geometry.
Keywords: Salicylaldimine; Schiff base; mononuclear complexes; Lanthanides