Spectroscopic Studies of 3-(4-chlorophenylazo)- 4- hydroxyl acetophenone and Some of it's Metal Complexes

Abstract

Azo dyes 3-(4-chlorophenylazo)-4-hydroxyacetophenone (L) were synthesized by reaction of p-chloroaniline to p-hydroxyacetophenone through mono azo-coupling reaction. Reaction of new azo-dye with La(III), Ce(III), Sm(III), Eu(III) and Dy(III) salts gave mono nuclear complexes, the complexes exhibited 1:3 M:L stoichiometry . Complexes showed octahedral geometry around metal ions. Their structures were identified by FTIR, UV-Visible, molar conductance and NMR spectran. IR spectra show that the ligand is coordinated to the metal ions in a bidentate manner and complexation with the ligand through the oxygen atom of hydroxyl group (OH) and azo nitrogen. It was found the inner transition metal ions was six-coordinated. Analytical data of the ligand and it's complexes are in good agreement with their formulation.