Synthesis, Characterization and Study the Biological Activities of new Schiff Base [5, 5,- (Ethane-1, 2- Diyl) Bis (4- ( 4-Bromobenzylideneamino)-4H- 1, 2, 4- Triazole- 3- Thiol)] and its Complexes with Cu (II), Cd (II), Hg (II) and Ag (I) ions

Abstract

A series of coordination compounds of Cu(II), Cd(II) , Hg(II)  and Ag(I) ions with 5,5^, -(ethane-1,2-diyl)bis(4-(4-bromobenzylideneamino)-4H-1,2,4-triazole-3-thio), as a ligand has been successfully prepared in alcoholic medium. The synthesized complexes were characterized quantitatively and qualitatively by using: elemental analysis CHNS, FT-IR spectroscopy, UV-visible spectroscopy, ¹H and ¹³CNMR, atomic absorption measurements, magnetic susceptibility, thermal analysis) TG and DTG) and conductivity measurements. This ligand coordinates as a bidentate that to the metal ions through sulphur and nitrogen of (azomethine group) atoms. According to the spectral data, Cu(II)- complex has coordination of 6 with octahedral geometry while the Cd(II)-complex and Hg(II) have coordination of 4 with exhibited tetrahedral ,and the Ag(I)-complex has coordination of 3 with exhibited trigonal planer ,  The Schiff base and its metal complexes have been screened for antimicrobial activity against four  bacteria, namely :(Staphylococcus aureus, , Streptococcus sp. , Klebsilla Pneumonia  Escherichia coli )and the  fungi, namely ( Aspergillus flavus ) .

Keywords:  Triazole complexes; Schiff base-triazole; Biological activity.