Synthesis and Characterisation of Lanthanideciid Complexes of 1-(2#x2032;-Hydroxybenzyl)-2-(2#x2032;-hydroxyphenyl)benzimidazole

摘要

Complexes of La (III), Pr (III), Nd (III), Sm (III), Eu (III), Gd (III), Tb (III), Dy (III) and Y (III) with 1-(2#x2032; -hydroxybenzy 1) -2-(2#x2032; -hydroxyphenyl)benzimidazole have been prepared and characterised on the basis of elemental analysis, molar conductance, magnetic susceptibility, and electronic and infrared spectral data. The spectral parameters, #x3B2;, b1/2, #x3B4;() and n have been calculated from the solid state electronic spectra of Pr (III), Nd (III) and Sm (III) complexes, which suggest a weak covalent metal-ligand bond formation. Infrared spectra reveal that coordination occurs through one of the phenolic oxygen atoms and N-3 atom of the ligand. The studies indicate an eight coordinated structure for the complexes.