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Titolo: N,N '-Ethylenediaminobis(benzylphosphonic acids) as a potent class of chelators for metal ions
Data di pubblicazione: 2009
Abstract: Aminophosphonates were found to be effective metal ion chelators. Ethylenediamine (EN) itself binds strongly to a series of metal ions forming efficient five-membered chelate ring using two nitrogen donors. Combination of EN with phosphonate function results in the family of low molecular chelating agents. Introduction of a pyridine moiety into EN -phosphonate structure results in the very effective ligands involving a four-nitrogen donor set to coordinate the metal ion. In this work, the potentiometric and spectroscopic data for two analogues 2,2'-(ethylenedi-imino)bis(3-pyridylphosphonic-acid)-L(2) and 2,2'-(ethylenedi-imino)bis(2-pyridylphosphonic-acid) - L(3), comprising EN, two phosphonates and two pyridines with Cu(II), Ni(II) and Zn(II) ions are presented showing very high efficacy of one of the ligands studied.
Tipologia:1.1 Articolo in rivista

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