Affinity of polymer-supported reagents for lanthanides as a function of donor atom polarizability / Yijia Yang in Industrial & engineering chemistry research, Vol. 48 N° 13 (Juillet 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 13 (Juillet 2009) . - pp. 6173–6187 Titre : Affinity of polymer-supported reagents for lanthanides as a function of donor atom polarizability Type de document : texte imprimé Auteurs : Yijia Yang, Auteur ; Spiro D. Alexandratos, Auteur Année de publication : 2009 Article en page(s) : pp. 6173–6187 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Lanthanide-ion affinities Donor atoms Polymer-supported reagents Résumé : This review correlates lanthanide-ion affinities with the polarizability of the donor atoms on immobilized ligands to gain an insight into the design of lanthanide-selective polymer-supported reagents. Comparison with the affinities for actinide ions clarifies the correlation. Polymers with different ligands are classified into four categories, based on an increasing order of donor atom polarizability: oxygen, oxygen and nitrogen, nitrogen, and sulfur. Hard−soft acid−base theory is an important determinant of ion−ligand affinities. Additional factors that affect complexation levels include counterion coordination to the metal, protonation of the ligand, and hydration. Selectivity for the lanthanide ions may be engineered into polymer-supported reagents by introducing phosphonic acid ligands. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900074t [article] Affinity of polymer-supported reagents for lanthanides as a function of donor atom polarizability [texte imprimé] / Yijia Yang, Auteur ; Spiro D. Alexandratos, Auteur . - 2009 . - pp. 6173–6187. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 13 (Juillet 2009) . - pp. 6173–6187 Mots-clés : Lanthanide-ion affinities Donor atoms Polymer-supported reagents Résumé : This review correlates lanthanide-ion affinities with the polarizability of the donor atoms on immobilized ligands to gain an insight into the design of lanthanide-selective polymer-supported reagents. Comparison with the affinities for actinide ions clarifies the correlation. Polymers with different ligands are classified into four categories, based on an increasing order of donor atom polarizability: oxygen, oxygen and nitrogen, nitrogen, and sulfur. Hard−soft acid−base theory is an important determinant of ion−ligand affinities. Additional factors that affect complexation levels include counterion coordination to the metal, protonation of the ligand, and hydration. Selectivity for the lanthanide ions may be engineered into polymer-supported reagents by introducing phosphonic acid ligands. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900074t

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