Synthesis, crystal structures and spectroscopic investigation of new Cu/Schiff-base complexes

Authors

  • Ahmed Toumi Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity; Team: Medicinal Chemistry and Natural Products, Faculty of Science of Monastir, University of Monastir, Monastir
  • Mohamed Rzaigui Laboratory of Material Chemistry, Faculty of Sciences of Bizerte, 7021 Zarzouna-Bizerte
  • Hichem Ben Jannet Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity; Team: Medicinal Chemistry and Natural Products, Faculty of Science of Monastir, University of Monastir, Monastir

DOI:

https://doi.org/10.24297/jac.v10i8.2257

Keywords:

bis(Schiff-base) ligands, Copper complexes, spectroscopic properties, X-ray crystal structures.

Abstract

Three novel Copper complexes, [Cu(L1)2][CuCl2] (1),  [Cu(L2)Cl] (2) and [Cu2(L3)3Cl2] (3), have been prepared by reaction of CuCl with the Schiff-base ligands L1: N,N’-bis(thiophen-2-ylmethylene)-ethane-1,2-diamine, L2: N,N’-bis(1H-pyrrol-2-ylmethylene)ethane-1,2-diamine and L3: N,N’-bis(2-nitrobenzylidene)-ethane-1,2-diamine in acetonitrile. The solid-state structures of these complexes were determined by X-ray diffraction from single crystal data and characterized by 1H and 13C NMR, IR and UV/Vis spectroscopies. This study shows that (1) is an ionic complex with a Cu(I)-centered cation and an isolated linear dichlorocuprate(I) anion, (3) is a dinuclear neutral complex of Cu(I) while (2)  is a mononuclear neutral complex of Cu(II). In the three complexes, Cu is tetracordinated in different geometrical environments. The atomic arrangements and spectroscopic properties of the three complexes are reported. Complexes 1-3 exhibit, in the solid state at room temperature, photoluminescence between 320 and 550 nm.

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Published

2014-08-02

How to Cite

Toumi, A., Rzaigui, M., & Jannet, H. B. (2014). Synthesis, crystal structures and spectroscopic investigation of new Cu/Schiff-base complexes. JOURNAL OF ADVANCES IN CHEMISTRY, 10(8), 3068–3079. https://doi.org/10.24297/jac.v10i8.2257

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Articles