Vol. 13, Issue 1 (2025)
Solvent-assisted synthesis and spectroscopic characterization of Cu(II), Ni(II), and Co(II) complexes with schiff base 1,3-Bis(Bromo Salicyl-imino) propane
Author(s): Sandhya
Abstract: Schiff base metal complexes have gained significant attention due to their structural versatility and wide range of applications in catalysis, material science, and medicinal chemistry. This study focuses on the solvent-assisted synthesis and spectroscopic characterization of Cu(II), Ni(II), and Co(II) complexes with Schiff base 1,3-bis(bromo salicyl-imino) propane. The Schiff base ligand was synthesized through a condensation reaction between 3-bromo salicylaldehyde and 1,3-diaminopropane in ethanol, followed by complexation with Cu(II), Ni(II), and Co(II) salts under varying solvent conditions. The synthesized metal complexes were characterized using FTIR, UV-Vis spectroscopy, magnetic susceptibility measurements, and thermogravimetric analysis (TGA).
FTIR results confirmed metal-ligand coordination, with characteristic C=N stretching at 1615-1620 cm⁻¹ and metal-oxygen (M-O) and metal-nitrogen (M-N) stretches between 475-560 cm⁻¹. UV-Vis analysis showed distinct d-d transitions at 620 nm (Cu(II)), 580 nm (Ni(II)), and 540 nm (Co(II)), while charge transfer bands appeared at 310-320 nm, indicating strong metal-ligand interactions. Magnetic susceptibility data suggested that Cu(II) adopts a distorted square planar geometry, while Ni(II) and Co(II) exhibit octahedral coordination. TGA results revealed that Cu(II) complexes exhibited the highest thermal stability, with decomposition occurring at higher temperatures compared to Ni(II) and Co(II) complexes. A one-way ANOVA test performed on FTIR data yielded a statistically significant F-value of 191810.53 (p = 3.83 × 10⁻¹⁵), demonstrating the solvent's impact on structural modifications.
The study confirms that solvent choice plays a crucial role in modulating the electronic structure, thermal stability, and coordination geometry of Schiff base metal complexes. These findings align with previous literature on Schiff base-metal chemistry, reinforcing the importance of solvent selection in optimizing complex properties. Practical recommendations include tailoring solvent environments for enhanced stability, catalytic efficiency, and potential applications in medicinal and industrial fields. Future research should explore the catalytic and biological potential of these metal-Schiff base complexes, expanding their usability in pharmaceuticals, material science, and electrochemical applications.
DOI: 10.22271/chemi.2025.v13.i1a.12491
Pages: 36-40 | 58 Views 24 Downloads
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How to cite this article:
Sandhya. Solvent-assisted synthesis and spectroscopic characterization of Cu(II), Ni(II), and Co(II) complexes with schiff base 1,3-Bis(Bromo Salicyl-imino) propane. Int J Chem Stud 2025;13(1):36-40. DOI: 10.22271/chemi.2025.v13.i1a.12491