Synthesis, Spectral and Antibacterial study of Azo compound derived from (3,3΄-Dimethyl-biphenyl-4,4΄-diamine) and its Metal complexes

Abstract

The present study includes synthesis of azo compound 4,4΄-Bis(resorcinolazo)-
3,3΄-Dimethyl-biphenyl [BRADB], the azo compound ligand was prepared from
reaction 3,3΄-Dimethyl-biphenyl-4,4΄-diamine with conc.HCl and NaNO2 then with
resorcinol. The metal complexes were prepared by reaction of some transition metals
with the above ligand in ethanol. The prepared compounds were characterized by
(infrared and electronic spectral measurements) and conductivity measurement. From
the molar ratio method, the stoichiometry of the prepared complexes was found to be
2:1 (metal:ligand). The molar conductance data revealed that all the metal chelates
were non-electrolytes. The spectral studies showed the geometry around Fe ion is
distorted octahedral, while the geometry around Zr and V ions are square-pyramidal.
The azo compound ligand and the metal chelats were studied for antibacterial
activities against (Enterococcus and Staphylococcus epidermidis) are Gram positive
and (Salmonella and Proteus) are Gram negative. The azo compound ligand and its
chelats were exhibited a variable activity of inhibition on the growth of the bacteria.