Synthesis and Characterization of Copper (II) Complex Bearing 1-Phenyliminomethyl-Naphthalen-2-ol

Idowu Daniel; Daniel Ayodele Idowu; Chidera Godswill Obideje; Ejikeme Peter Igwe; Okiki Quadri; Emmanuel Ogbonnia Oko; Gabriel Lagbel

doi:10.70454/IJMRE.2025.05035

Authors

Idowu Daniel Department of Chemistry, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria Author
Daniel Ayodele Idowu Department of Chemistry, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria Author
Chidera Godswill Obideje Department of Biochemistry, Federal University of Technology, Minna, Niger State, Nigeria Author
Ejikeme Peter Igwe Department of Biochemistry, University of Nigeria, Nsukka, Enugu State, Nigeria Author
Okiki Quadri Department of Chemistry and Biochemistry, Northern Illinois University, Illinois, USA Author
Emmanuel Ogbonnia Oko Department of Chemistry, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria Author
Gabriel Lagbel Department of Physics, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana Author

DOI:

https://doi.org/10.70454/IJMRE.2025.05035

Keywords:

Cu(II) Complex, Schiff Base, UV-Vis and FT-IR Spectroscopy, 2-hydroxyl-1-naphtaldehyde, Aniline

Abstract

A novel Schiff base ligand, 1-phenyliminomethyl-naphthalen-2-ol was synthesized by condensation of 2-hydroxyl-1-naphtaldehyde and aniline, and subsequently complexed with Cu(II) ions to become a stable metal-ligand complex. The synthesized Schiff base and Cu(II) complex have been characterized using UV–Visible spectroscopy and Fourier-transform infrared spectroscopy. The UV-Vis analysis revealed that metal-ligand charge transfer which depicted low band at 406, 350 nm (for the two molar ratio 1:1, 2:1) respectively. The FTIR absorption spectra confirmed the formation of the imine (C=N) bond and coordination of the phenolic oxygen and azomethine nitrogen. NH bonds revealed coordination at 3340 and 3366 cm^-1while CN bonds showed no coordination and 1161 cm^-1, both at 1:1, 2:1 respectively. In conclusion, these findings supports the successful formation of a bidentate Schiff base to Cu(II) complex with a potential application in biological and catalysis studies.

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