Effect of the coordination of π-acceptor 4-cyanopyridine ligand on the structural and electronic properties of meso -tetra( para -methoxy) and meso -tetra( para -chlorophenyl) porphyrin cobalt( ii ) coordination compounds. Application in the catalytic degradation of methylene blue dye - Archive ouverte HAL
Article Dans Une Revue RSC Advances Année : 2020

Effect of the coordination of π-acceptor 4-cyanopyridine ligand on the structural and electronic properties of meso -tetra( para -methoxy) and meso -tetra( para -chlorophenyl) porphyrin cobalt( ii ) coordination compounds. Application in the catalytic degradation of methylene blue dye

Mouhieddinne Guergueb
  • Fonction : Auteur
Soumaya Nasri
Jihed Brahmi
  • Fonction : Auteur
Thierry Roisnel
Vincent Guerineau
  • Fonction : Auteur
Ilona Turowska-Tyrk
  • Fonction : Auteur
Kaïss Aouadi
  • Fonction : Auteur
Habib Nasri
  • Fonction : Auteur

Résumé

To examine the influence of both the important p-acceptor character of the 4-cyanopyridine ligand and the nature of the para-substituted phenyls of meso-porphyrins on the electronic, electrochemical and structural properties of cobaltous metalloporphyrins, we prepared and fully characterized two coordination compounds: the (4-cyanopyridine)[meso-tetra(para-methoxyphenyl)porphyrinato]cobalt(II) and the (4-cyanopyridine)[meso-tetra(para-chlorophenyl)porphyrinato]cobalt(II) with the [CoII(TMPP)(4-CNpy)] and [CoII(TClPP)(4-CNpy)] formulas (complexes 1–2). The solution structures of compounds 1–2 were confirmed by 1H NMR spectroscopy and mass spectrometry methods. They were further characterized by cyclic voltammetry and photoluminescence studies. The X-ray molecular structure data show that the Co-TClPP-4-NCpy derivative (2) exhibits high ruffling deformation compared to that of the Co-TMPP-4-CNpy species (1). Notably, the crystal packing of complex 1 shows the formation of Co/Co supramolecular dimers with a distance of 5.663 A. As an application of our two cobaltous compounds, an investigation involving complexes 1–2 in the degradation of the methylene blue dye in the presence and absence of H2O2 in aqueous solutions was carried out. These promising results show that 1–2 can be used as catalysts in the degradation processes of dyes.

Dates et versions

hal-04692786 , version 1 (10-09-2024)

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Citer

Mouhieddinne Guergueb, Soumaya Nasri, Jihed Brahmi, Frédérique Loiseau, Florian Molton, et al.. Effect of the coordination of π-acceptor 4-cyanopyridine ligand on the structural and electronic properties of meso -tetra( para -methoxy) and meso -tetra( para -chlorophenyl) porphyrin cobalt( ii ) coordination compounds. Application in the catalytic degradation of methylene blue dye. RSC Advances, 2020, 10 (12), pp.6900-6918. ⟨10.1039/c9ra08504a⟩. ⟨hal-04692786⟩
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