Synthesis and Characterization of the Ligand 2-[(6-Nitro-2-benzothiazolyl )azo]-4,6-dimethylphenol (6-NBTADMP) and It's Complexes with Fe(II), Co(III), Ni(II), Cu(II), Zn(II), Cd(II), Pd(II) and Ag(I) Ions

Abstract

A new ligand 2-[(6-Nitro-2-benzothiazolyl)azo]-4,6-dimethylphenol (6-NBTADMP = HL) has
been synthesized by coupling diazotized 2-amino-6-nitrobenzothiazole with 2,4-dimethylphenol in
alkaline alcoholic solution. Metal complexes have the general formula [FeL2], [CoL2]Cl . H2O,
[NiL2], [CuL H2O]Cl, [ZnL2], [CdL2]. H2O, [PdLCl], and [AgL H2O] . H2O, were synthesized
from thiazolylazo ligand and metal chloride ( sulfate for Fe(II) and nitrate for Ag(I) ) in 1:1 molar
ratio (metal:ligand) for Cu(II) , Pd(II) and Ag(I) and 1:2 for the rest metal ions. Based on elemental
analysis, molar conductivity, magnetic susceptibility data, IR and UV-Vis spectra. The data show
that the ligand coordinates to the metal ion νia phenolate O, azo N and with thiazole N atoms. All
complexes are insoluble in water but these are soluble in common organic solvents such as acetone,
DMF and DMSO. According to results obtained the geometry for the complexes was suggested.
Key words: Synthesis, Thiazolylazo, Ligand, Metal Complexes, Characterization.