One Pot Synthesis of Cu(II) and Ni(II) Peroxo Complexes Containing Schiff Base: Physicochemical, Spectral and Antibacterial Investigations
Md. Mahasin Ali
Department of Chemistry, Hajee Mohammad Danesh Science and Technology University, Bangladesh.
Md. Nur Amin Bitu
Department of Chemistry, Rajshahi University, Rajshahi, Bangladesh.
Md. Saddam Hossain
Department of Chemistry, Begum Rokeya University, Rangpur, Bangladesh.
Md. Faruk Hossen
Department of Chemistry, Rajshahi University, Rajshahi, Bangladesh.
Md. Ali Asraf
Department of Chemistry, Rajshahi University, Rajshahi, Bangladesh.
Md. Akhter Farooque
Department of Chemistry, Rajshahi University, Rajshahi, Bangladesh.
Md. Kudrat-E- Zahan *
Department of Chemistry, Rajshahi University, Rajshahi, Bangladesh.
*Author to whom correspondence should be addressed.
Abstract
Two new peroxo complexes of Cu(II) and Ni(II) ion containing Schiff base (SB) were synthesized and characterized by TLC, Elemental analyses, conductivity, magnetic moment measurements, UV-Vis. and IR and ESI-MS spectral studies. The Schiff base ligand derived from cinnamaldehyde and o-aminophenol participated in complexation through a single pot reaction. IR spectra showed that the Schiff base ligand coordinated to the metal ion through nitrogen of azomethine group and oxygen of hydroxyl group & peroxo group (O-O). Magnetic moment value coupled with electronic spectral data suggested a square planar geometry for both the complexes. The molar conductance values indicated the non-electrolytic nature of the complexes. Antibacterial activity of the complexes was tested against four pathogenic bacteria, two Gram-positive Staphylococcus aureus & Bacillus cereus and two Gram-negative Escherichia coli & Shigella dysenteriae with Kanamycin (K-30) standard. The result shows that Cu(II) complex exhibited more potential antibacterial activity than the Ni(II) complex against all the tested organisms.
Keywords: Peroxo complexes, schiff base, cinnamaldehyde, o-aminophenol, antibacterial activity