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Modeling the Solvent Extraction of Cadmium(II) from Aqueous Chloride Solutions by 2-pyridyl Ketoximes: A Coordination Chemistry Approach

The goal of this work is to model the nature of the chemical species [CdCl(2)(extractant)(2)] that are formed during the solvent (or liquid-liquid) extraction of the toxic cadmium(II) from chloride-containing aqueous media using hydrophobic 2-pyridyl ketoximes as extractants. Our coordination chemis...

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Autores principales: Mazarakioti, Eleni C., Beobide, Amaia Soto, Angelidou, Varvara, Efthymiou, Constantinos G., Terzis, Aris, Psycharis, Vassilis, Voyiatzis, George A., Perlepes, Spyros P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631265/
https://www.ncbi.nlm.nih.gov/pubmed/31200586
http://dx.doi.org/10.3390/molecules24122219
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author Mazarakioti, Eleni C.
Beobide, Amaia Soto
Angelidou, Varvara
Efthymiou, Constantinos G.
Terzis, Aris
Psycharis, Vassilis
Voyiatzis, George A.
Perlepes, Spyros P.
author_facet Mazarakioti, Eleni C.
Beobide, Amaia Soto
Angelidou, Varvara
Efthymiou, Constantinos G.
Terzis, Aris
Psycharis, Vassilis
Voyiatzis, George A.
Perlepes, Spyros P.
author_sort Mazarakioti, Eleni C.
collection PubMed
description The goal of this work is to model the nature of the chemical species [CdCl(2)(extractant)(2)] that are formed during the solvent (or liquid-liquid) extraction of the toxic cadmium(II) from chloride-containing aqueous media using hydrophobic 2-pyridyl ketoximes as extractants. Our coordination chemistry approach involves the study of the reactions between cadmium(II) chloride dihydrate and phenyl 2-pyridyl ketoxime (phpaoH) in water-containing acetone. The reactions have provided access to complexes [CdCl(2)(phpaoH)(2)]∙H(2)O (1∙H(2)O) and {[CdCl(2)(phpaoH)]}(n) (2); the solid-state structures of which have been determined by single-crystal X-ray crystallography. In both complexes, phpaoH behaves as an N,N’-bidentate chelating ligand. The complexes have been characterized by solid-state IR and Raman spectra, and by solution (1)H NMR spectra. The preparation and characterization of 1∙H(2)O provide strong evidence for the existence of the species [CdCl(2)(extractant)(2)] that have been proposed to be formed during the liquid-liquid extraction process of Cd(II), allowing the efficient transfer of the toxic metal ion from the aqueous phase into the organic phase.
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spelling pubmed-66312652019-08-19 Modeling the Solvent Extraction of Cadmium(II) from Aqueous Chloride Solutions by 2-pyridyl Ketoximes: A Coordination Chemistry Approach Mazarakioti, Eleni C. Beobide, Amaia Soto Angelidou, Varvara Efthymiou, Constantinos G. Terzis, Aris Psycharis, Vassilis Voyiatzis, George A. Perlepes, Spyros P. Molecules Article The goal of this work is to model the nature of the chemical species [CdCl(2)(extractant)(2)] that are formed during the solvent (or liquid-liquid) extraction of the toxic cadmium(II) from chloride-containing aqueous media using hydrophobic 2-pyridyl ketoximes as extractants. Our coordination chemistry approach involves the study of the reactions between cadmium(II) chloride dihydrate and phenyl 2-pyridyl ketoxime (phpaoH) in water-containing acetone. The reactions have provided access to complexes [CdCl(2)(phpaoH)(2)]∙H(2)O (1∙H(2)O) and {[CdCl(2)(phpaoH)]}(n) (2); the solid-state structures of which have been determined by single-crystal X-ray crystallography. In both complexes, phpaoH behaves as an N,N’-bidentate chelating ligand. The complexes have been characterized by solid-state IR and Raman spectra, and by solution (1)H NMR spectra. The preparation and characterization of 1∙H(2)O provide strong evidence for the existence of the species [CdCl(2)(extractant)(2)] that have been proposed to be formed during the liquid-liquid extraction process of Cd(II), allowing the efficient transfer of the toxic metal ion from the aqueous phase into the organic phase. MDPI 2019-06-13 /pmc/articles/PMC6631265/ /pubmed/31200586 http://dx.doi.org/10.3390/molecules24122219 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mazarakioti, Eleni C.
Beobide, Amaia Soto
Angelidou, Varvara
Efthymiou, Constantinos G.
Terzis, Aris
Psycharis, Vassilis
Voyiatzis, George A.
Perlepes, Spyros P.
Modeling the Solvent Extraction of Cadmium(II) from Aqueous Chloride Solutions by 2-pyridyl Ketoximes: A Coordination Chemistry Approach
title Modeling the Solvent Extraction of Cadmium(II) from Aqueous Chloride Solutions by 2-pyridyl Ketoximes: A Coordination Chemistry Approach
title_full Modeling the Solvent Extraction of Cadmium(II) from Aqueous Chloride Solutions by 2-pyridyl Ketoximes: A Coordination Chemistry Approach
title_fullStr Modeling the Solvent Extraction of Cadmium(II) from Aqueous Chloride Solutions by 2-pyridyl Ketoximes: A Coordination Chemistry Approach
title_full_unstemmed Modeling the Solvent Extraction of Cadmium(II) from Aqueous Chloride Solutions by 2-pyridyl Ketoximes: A Coordination Chemistry Approach
title_short Modeling the Solvent Extraction of Cadmium(II) from Aqueous Chloride Solutions by 2-pyridyl Ketoximes: A Coordination Chemistry Approach
title_sort modeling the solvent extraction of cadmium(ii) from aqueous chloride solutions by 2-pyridyl ketoximes: a coordination chemistry approach
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631265/
https://www.ncbi.nlm.nih.gov/pubmed/31200586
http://dx.doi.org/10.3390/molecules24122219
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