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Ditopic receptors containing urea groups for solvent extraction of Cu(II) salts
dc.contributor.author | Carreira-Barral, Israel | |
dc.contributor.author | Mato-Iglesias, Marta | |
dc.contributor.author | Blas, Andrés de | |
dc.contributor.author | Platas-Iglesias, Carlos | |
dc.contributor.author | Tasker, Peter A. | |
dc.contributor.author | Esteban-Gómez, David | |
dc.date.accessioned | 2017-11-02T09:49:27Z | |
dc.date.issued | 2017-02-15 | |
dc.identifier.citation | Ditopic receptors containing urea groups for solvent extraction of Cu(II) salts. I. Carreira-Barral, M. Mato-Iglesias, A. de Blas, C. Platas-Iglesias, P. A. Tasker and D. Esteban-Gómez, Dalt. Trans., 2017, 46, 3192–3206. | es_ES |
dc.identifier.issn | 1477-9226 | |
dc.identifier.issn | 1477-9234 | |
dc.identifier.uri | http://hdl.handle.net/2183/19675 | |
dc.description.abstract | [Abstract] The ditopic receptor L3 [1-(2-((7-(4-(tert-butyl)benzyl)-1,4,7,10-tetraazacyclododecan-1-yl)methyl)phenyl)-3-(3-nitrophenyl)urea] containing a macrocyclic cyclen unit for Cu(II)-coordination and a urea moiety for anion binding was designed for recognition of metal salts. The X-ray structure of [CuL3(SO4)] shows that the sulfate anion is involved in cooperative binding via coordination to the metal ion and hydrogen-bonding to the urea unit. This behaviour is similar to that observed for the related receptor L1 [1-(2-((bis(pyridin-2-ylmethyl)amino)methyl)phenyl)-3-(3-nitrophenyl)urea], which forms a dimeric [CuL1(μ-SO4)]2 structure in the solid state. In contrast, the single crystal X-ray structure of [ZnL3(NO3)2] contains a 1 : 2 complex (metal : anion) where one anion coordinates to the metal and the other is hydrogen-bonded to the urea group. Spectrophotometric titrations performed for the [CuL3(OSMe2)]2+ complex indicate that this system is able to bind a wide range of anions with an affinity sequence: MeCO2− > Cl− > H2PO4− > Br− > NO2− > HSO4− > NO3−. Lipophilic analogues of L1 and L3 extract CuSO4 and CuCl2 from water into chloroform with high selectivity over the corresponding Co(II), Ni(II) and Zn(II) salts. | es_ES |
dc.description.sponsorship | Xunta de Galicia; EM 2012/088 | es_ES |
dc.description.sponsorship | Xunta de Galicia; CN-2012/011 | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Royal Society of Chemistry | es_ES |
dc.relation.uri | https://doi.org/10.1039/C7DT00093F | es_ES |
dc.subject | Hydrometallurgy | es_ES |
dc.subject | Anion recognition | es_ES |
dc.subject | Copper(II) complexes | es_ES |
dc.subject | Ditopic ligands | es_ES |
dc.subject | Solvent extraction experiments | es_ES |
dc.subject | Urea moiety | es_ES |
dc.title | Ditopic receptors containing urea groups for solvent extraction of Cu(II) salts | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.access | info:eu-repo/semantics/embargoedAccess | es_ES |
dc.date.embargoEndDate | 2018-02-16 | es_ES |
dc.date.embargoLift | 2018-02-16 | |
UDC.journalTitle | Dalton Transactions | es_ES |
UDC.volume | 46 | es_ES |
UDC.issue | 10 | es_ES |
UDC.startPage | 3192 | es_ES |
UDC.endPage | 3206 | es_ES |
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