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Study of protonation and Zn(II), Cd(II), Cu(II) and Mn(II) complexation with a glutamic acid <i>N</i>-pyrimidine derivative: Crystal structure of a neutral Cd(II) complex of the bianionic ligand
Auteur(s)
Arranz-Mascarós, P.
Editeur(s)
Gutiérrez-Valero, M. D.
López-Garzón, R.
López-León, M. D.
Godino-Salido M. L.
Santiago-Medina, A.
Date de parution
2008
In
Polyhedron, Elsevier, 2008/27/2/623-632
Résumé
The compound <i>N</i>-(4-amino-1-methyl-5-nitroso-6-oxo-1,6-dihydropyrimidin-2-yl)-(s)-glutamic acid (H3<sub></sub>L) was synthesised and structurally characterised by analytical methods and <sup>1</sup>H, <sup>13</sup>C and <sup>15</sup>N NMR spectroscopy. This compound (H<sub>3</sub>L) 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 H<sub>3</sub>L and its coordination ability towards Cd<sup>2+</sup>, Zn<sup>2+</sup>, Cu<sup>2+</sup> and Mn<sup>2+</sup> ions in water solution was also studied by potentiometric methods, UV–Vis and <sup>1</sup>H, <sup>13</sup>C NMR spectroscopies. The obtained results allow us to fit the operative conditions for the use of the activated carbon–H<sub>3</sub>L adsorbent for the retaining of the above-mentioned metal ions in aqueous solutions. The molecular structure of {[Cd(HL)H<sub>2</sub>O] • <sub>3</sub>H<sub>2</sub>O}<i><sub>n</sub></i> was solved by single-crystal X-ray diffraction methods.
Autre version
http://dx.doi.org/10.1016/j.poly.2007.10.028
Type de publication
Resource Types::text::journal::journal article
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