The Synergistic Extraction of Lanthanide Ions by a Mixture of Calix[4]resorcinarene or its Dimethylamino-, Piperidyl- or Trimethylammoniummethylated Derivatives and 1,10-Phenanthroline in n-Heptanol |
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Authors: | Lubov S. Kuznetsova Asiya R. Mustafina Albina Yu. Ziganshina Ella Kh. Kazakova Alexander I. Konovalov |
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Affiliation: | (1) Kazan Scientific Centre of the Russian Academy of Sciences, A.E. Arbuzov Institute of Organic and Physical Chemistry, Arbuzov Str. 8, c[Kazan, 420088, Russia. |
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Abstract: | The alkylaminomethylatedcalix[4]resorcinarene derivatives, modified bydimethylamino-, piperidyl- and trimethylammoniummoieties, have been synthesised to investigate theirextractability towards lanthanide ions and to comparewith the extractability of calix[4]resorcinarene. Both calix[4]resorcinarene and its derivatives have beenshown to synergistically affect lanthanide ionextraction from neutral aqueous solutions by1,10-phenanthroline through outer-sphere interactionof lanthanide bis-phenanthrolinate cations withdeprotonated forms of calix[4]resorcinarene. Thederivatives with dimethylamino- andpiperidylmethylated moieties are shown to be moreeffective extractants in comparison with theunsubstituted one. |
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Keywords: | calix[4]resorcinarene complexes extraction lanthanides |
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