Volume 6, Issue 4, August 2018, Page: 147-155
Physical and Spectral Characterization of Ni (II) Cu(II) Co(II) and Cd(II) Complexes with Schiff Base of Salicylaldehyde and 2-Aminopyridine Towards Potential Microbial Application
Md. Motahar Hossain, Department of Chemistry, University of Rajshahi, Rajshahi, Bangladesh
Md. Abul Bashar, Department of Textile Engineering, Khwaja Yunus Ali University, Sirajgonj, Bangladesh
Md. Nuruzzaman Khan, Department of Chemistry, Begum Rokeya University, Rangpur, Bangladesh
Pijush Kanti Roy, Department of Chemistry, Begum Rokeya University, Rangpur, Bangladesh
Md. Abdul Mannan, Department of Chemistry, University of Rajshahi, Rajshahi, Bangladesh
Md. Siddik Ali, Department of Chemistry, University of Rajshahi, Rajshahi, Bangladesh
Md. Akhter Farooque, Department of Chemistry, University of Rajshahi, Rajshahi, Bangladesh
Received: Sep. 1, 2018;       Accepted: Oct. 6, 2018;       Published: Oct. 29, 2018
DOI: 10.11648/j.ajac.20180604.13      View  527      Downloads  77
A Schiff base (SB) is derived from salicylaldehyde and 2-aminopyridine. The transition metal complexes of N i(II), Cu (II), Co and Cd (II) metal ions were prepared with this 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 shows the formation of 1:2 [M:2L] complex of the formula of M2+L2, where M2+ =Ni(II), Cu(II), Co(II), Cd(II) and L = Schiff base (SB). The molar conductance (conductivity) measurements were revealed that all the complexes are non-electrolyte 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 complexes. The Ni(II), Cu(II), Co(II) ion forms high spin tetrahedral geometry, whereas Cd(II) ion forms low spin tetrahedral structure. The free Schiff base and its complexes have been tested for their antimicrobial activities against four human pathogenic (two gram-positive and two gram-negative) bacteria. The obtained results showed that only Cu(II) complex exhibited strong activity toward human pathogenic gram positive and gram negative bacteria whereas the Ni(II), Co(II) and Cd(II) complexes showed week to moderate antimicrobial activity compared with standard Kanamycin and Ampicillin.
Schiff Base, Metal Complex, Spectral Studies, Antimicrobial Activity
To cite this article
Md. Motahar Hossain, Md. Abul Bashar, Md. Nuruzzaman Khan, Pijush Kanti Roy, Md. Abdul Mannan, Md. Siddik Ali, Md. Akhter Farooque, Physical and Spectral Characterization of Ni (II) Cu(II) Co(II) and Cd(II) Complexes with Schiff Base of Salicylaldehyde and 2-Aminopyridine Towards Potential Microbial Application, American Journal of Applied Chemistry. Vol. 6, No. 4, 2018, pp. 147-155. doi: 10.11648/j.ajac.20180604.13
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