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Stoeckli-Evans, Helen

Nom
Stoeckli-Evans, Helen
Affiliation principale
Fonction
Professeur.e émérite
Email
helen.stoeckli-evans@unine.ch
Identifiants
https://libra.unine.ch/handle/123456789/470
_
0000-0002-9960-3869

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  • Publication
    Accès libre
    Study of protonation and Zn(II), Cd(II), Cu(II) and Mn(II) complexation with a glutamic acid N-pyrimidine derivative: Crystal structure of a neutral Cd(II) complex of the bianionic ligand
    (2008)
    Arranz-Mascarós, P.
    ;
    Gutiérrez-Valero, M. D.
    ;
    López-Garzón, R.
    ;
    López-León, M. D.
    ;
    Godino-Salido M. L.
    ;
    Santiago-Medina, A.
    ;
    Stoeckli-Evans, Helen 
    The compound N-(4-amino-1-methyl-5-nitroso-6-oxo-1,6-dihydropyrimidin-2-yl)-(s)-glutamic acid (H3L) was synthesised and structurally characterised by analytical methods and 1H, 13C and 15N NMR spectroscopy. This compound (H3L) shows the same topology as other model receptors previously used to develop chemical functionalization at the surface of an active carbon when they adsorb on it. Protonation of H3L and its coordination ability towards Cd2+, Zn2+, Cu2+ and Mn2+ ions in water solution was also studied by potentiometric methods, UV–Vis and 1H, 13C NMR spectroscopies. The obtained results allow us to fit the operative conditions for the use of the activated carbon–H3L adsorbent for the retaining of the above-mentioned metal ions in aqueous solutions. The molecular structure of {[Cd(HL)H2O] • 3H2O}n was solved by single-crystal X-ray diffraction methods.