Metal complexation by tripodal N-Acyl(thio)urea and picolin(thio)amide compounds: synthesis/extraction and potentiometric studies

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Reinoso-Garcia, Marta M. and Dijkman, Arjan and Verboom, Willem and Reinhoudt, David N. and Malinowska, Elzbieta and Wojciechowska, Dorota and Pietrzak, Mariusz and Selucky, Pavel (2005) Metal complexation by tripodal N-Acyl(thio)urea and picolin(thio)amide compounds: synthesis/extraction and potentiometric studies. European Journal of Organic Chemistry, 2005 (10). pp. 2131-2138. ISSN 1434-193X

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Abstract:The synthesis and binding properties towards different cations of a series of tripodal ligands functionalized with N-acyl(thio)urea and picolin(thio)amide moieties are described. For the extraction of Am3+ and Eu3+ the compounds are not efficient. However, N-acylurea derivative 10 exhibit a significant selectivity for Am3+ over Eu3+. Upon addition of the synergistic hexabrominated bis(dicarbollide)cobalt anion (Br6-COSAN) the distribution coefficients for Am3+ and Eu3+ increase up to 1000 for picolinamide derivative 11. Extraction studies with metal picrates (Pb2+, Cu2+, Ag+, Hg2+, Cd2+, Eu3+, Fe3+, K+, Na+, and Ca2+) or the incorporation in ion selective electrodes (ISEs), show that picolinamide derivative 11 is a very selective and strong ionophore for Hg2+ and that N-acylthiourea 8 is a very good ionophore for Ag+.
Item Type:Article
Copyright:© 2005 WILEY-VCH Verlag
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/52996
Official URL:http://dx.doi.org/10.1002/ejoc.200500002
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Metis ID: 225079