Preparation, Physical Characterization and Antibacterial Activity of Ni (II), Cu (II), Co (II), Cd (II), Zn (II) and Cr (III) Schiff Base Complex Compounds
Md. Motahar Hossain,
Md. Abul Bashar,
Md. Nuruzzaman Khan,
Pijush Kanti Roy,
Md. Siddik Ali,
Md. Akhter Farooque
Issue:
Volume 6, Issue 2, April 2018
Pages:
17-23
Received:
13 June 2018
Accepted:
27 June 2018
Published:
23 July 2018
Abstract: A Schiff base (SB) derived from p-hydroxy benzaldehyde and 4-aminobenzoic acid. The transition metal complexes of Ni (II), Cu (II), Co (II), Cd (II), Zn (II) and Cr (III) were prepared separately with the Schiff base (SB), which were used as ligand. Several physical tools, in particular; elemental analysis, molar conductivity, magnetic susceptibility, infrared spectroscopy (IR), electronic absorption spectroscopy (ESR) to investigate the chemical structure of the prepared transition metal complexes. The elemental analysis data show the formation of 1:2 [M1:2L] and 1:3 [M2:3L] complexes of the formula of M2+L2 and M3+L3, respectively where M2+ =Ni (II), Cu (II), Co (II), Cd (II), Zn (II) and M3+= Cr (III) and L = Schiff base (SB). The molar conductance (conductivity) measurements were revealed that all the complexes are nonelectrolyte in nature. The infrared (IR) spectral studies indicated the binding sites of the Schiff base ligand with the transition metal ions. The magnetic susceptibility measurements and electronic spectral results supported the predicted coordination geometry of the complexes and magnetic properties (para or dia-magnetic nature) of the complex compounds. The free Schiff base and its complexes have been tested for their antimicrobial activities against several human pathogenic (two gram-positive and two gram-negative) bacteria. The obtained results showed that the complex compounds exhibit moderate to strong antimicrobial activity compared with kanamycin and ampicillin.
Abstract: A Schiff base (SB) derived from p-hydroxy benzaldehyde and 4-aminobenzoic acid. The transition metal complexes of Ni (II), Cu (II), Co (II), Cd (II), Zn (II) and Cr (III) were prepared separately with the Schiff base (SB), which were used as ligand. Several physical tools, in particular; elemental analysis, molar conductivity, magnetic susceptibili...
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