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Jökel J, Nyßen F, Siegmund D, Apfel UP. An asymmetric cryptand for the site-specific coordination of 3d metals in multiple oxidation states. Dalton Trans 2021; 50:14602-14610. [PMID: 34596655 DOI: 10.1039/d1dt02075g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bis-tren (tren = tris(2-aminoethyl)amine) azacryptands were previously studied profoundly for the coordination of two +II metals and subsequent binding of substrates within their cavity. Likewise, cryptates including metals in different oxidations states were reported with the rather unstable hexa-imine analogues but also revealed only little stability. In this work, we report the synthesis of an asymmetric hexa-amine cryptand analogue by selectively exchanging three of the secondary amines of one binding site with sulphur atoms. We show that the presence of two distinct binding sites allows for the selective formation of stable dinuclear complexes of metals with different oxidation numbers and present the formation of distinct CuICoII, CuINiII and CuICuIII cryptates.
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Affiliation(s)
- Julia Jökel
- Inorganic Chemistry I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany.
| | - Frauke Nyßen
- Inorganic Chemistry I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany.
| | - Daniel Siegmund
- Department of Electrosynthesis, Fraunhofer UMSICHT, Osterfelder Str. 3, 46047 Oberhausen, Germany
| | - Ulf-Peter Apfel
- Inorganic Chemistry I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany. .,Department of Electrosynthesis, Fraunhofer UMSICHT, Osterfelder Str. 3, 46047 Oberhausen, Germany
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Thevenet A, Miljkovic A, La Cognata S, Marie C, Tamain C, Boubals N, Mangano C, Amendola V, Guilbaud P. Syntheses and evaluation of new hydrophilic azacryptands used as masking agents of technetium in solvent extraction processes. Dalton Trans 2021; 50:1620-1630. [PMID: 33470269 DOI: 10.1039/d0dt04210b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The extraction of technetium, present in nitric acid medium as pertechnetate anion, is an issue in solvent extraction processes used to recover uranium and plutonium. In the present study, a complexing agent is added in the aqueous nitric acid solution to bind selectively the pertechnetate anion and prevent its extraction into the organic phase or to back extract it in the aqueous phase. Several azacryptands with the addition of hydrophilic groups were synthesized to improve the solubility of the previously studied cage molecule in nitric acid medium. Solvent extraction tests reveal that all the synthesized ligands have a similar complexation strength towards pertechnetate and are able to maintain this anion in the aqueous phase (0.5 M HNO3). These ligands are able to overcome the Hofmeister bias and selectively bind technetium in nitric acid solution. The azacryptand concentration can be increased by a factor of three in the liquid-liquid extraction conditions compared to our previous work. Coordination studies using microcalorimetry, Single Crystal X-Ray Diffraction (SC-XRD), infrared and Raman spectroscopies show the formation of an inclusion complex with hydrogen bonds stabilizing the oxo-anion within the cavity. This solubility improvement is promising for the introduction of this kind of macrocyclic azacryptands in a solvent extraction process.
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Affiliation(s)
- Alexiane Thevenet
- CEA, DES, ISEC, DMRC, University of Montpellier, Marcoule, F-30207 Bagnols-sur-Cèze, France.
| | - Ana Miljkovic
- Dipartimento di Chimica, Università di Pavia, via Taramelli 12, I-27100 Pavia, Italy and INSTM, via G. Giusti 9, I-50121 Firenze, Italy
| | - Sonia La Cognata
- Dipartimento di Chimica, Università di Pavia, via Taramelli 12, I-27100 Pavia, Italy
| | - Cécile Marie
- CEA, DES, ISEC, DMRC, University of Montpellier, Marcoule, F-30207 Bagnols-sur-Cèze, France.
| | - Christelle Tamain
- CEA, DES, ISEC, DMRC, University of Montpellier, Marcoule, F-30207 Bagnols-sur-Cèze, France.
| | - Nathalie Boubals
- CEA, DES, ISEC, DMRC, University of Montpellier, Marcoule, F-30207 Bagnols-sur-Cèze, France.
| | - Carlo Mangano
- Dipartimento di Chimica, Università di Pavia, via Taramelli 12, I-27100 Pavia, Italy and INSTM, via G. Giusti 9, I-50121 Firenze, Italy
| | - Valeria Amendola
- Dipartimento di Chimica, Università di Pavia, via Taramelli 12, I-27100 Pavia, Italy and INSTM, via G. Giusti 9, I-50121 Firenze, Italy
| | - Philippe Guilbaud
- CEA, DES, ISEC, DMRC, University of Montpellier, Marcoule, F-30207 Bagnols-sur-Cèze, France.
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Gupta M, Tomar K, Pandey SK, Bharadwaj PK. Weak and Reversible Binding of Alkali Metal Ions (Na +/K +) by an Aza‐Oxa Cryptand. ChemistrySelect 2019. [DOI: 10.1002/slct.201803353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mayank Gupta
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
| | - Kapil Tomar
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
| | - Sarvesh K. Pandey
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
| | - Parimal K. Bharadwaj
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
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Oshchepkov AS, Shumilova TA, Namashivaya SR, Fedorova OA, Dorovatovskii PV, Khrustalev VN, Kataev EA. Hybrid Macrocycles for Selective Binding and Sensing of Fluoride in Aqueous Solution. J Org Chem 2018; 83:2145-2153. [DOI: 10.1021/acs.joc.7b03077] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Aleksandr S. Oshchepkov
- Institute
of Chemistry, Faculty of Natural Sciences, Technische Universität Chemnitz, Chemnitz 09107, Germany
- A. N. Nesmeyanov Institute of Organoelement Compounds of RAS, Vavilova Street, 28, Moscow 119991, Russian Federation
| | - Tatiana A. Shumilova
- Institute
of Chemistry, Faculty of Natural Sciences, Technische Universität Chemnitz, Chemnitz 09107, Germany
| | - Siva R. Namashivaya
- Institute
of Chemistry, Faculty of Natural Sciences, Technische Universität Chemnitz, Chemnitz 09107, Germany
| | - Olga A. Fedorova
- A. N. Nesmeyanov Institute of Organoelement Compounds of RAS, Vavilova Street, 28, Moscow 119991, Russian Federation
| | - Pavel V. Dorovatovskii
- National Research Center “Kurchatov Institute”, 1 Acad. Kurchatov Sq., Moscow 123182, Russian Federation
| | - Viktor N. Khrustalev
- Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklay Street, Moscow 117198, Russian Federation
| | - Evgeny A. Kataev
- Institute
of Chemistry, Faculty of Natural Sciences, Technische Universität Chemnitz, Chemnitz 09107, Germany
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Affiliation(s)
| | - Greta Bergamaschi
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Milan, Italy
| | - Ana Miljkovic
- Department of Chemistry, University of Pavia, Pavia, Italy
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6
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Pallavicini P, Amendola V, Bergamaschi G, Cabrini E, Dacarro G, Rossi N, Taglietti A. A bistren cryptand with a remote thioether function: Cu(ii) complexation in solution and on the surface of gold nanostars. NEW J CHEM 2016. [DOI: 10.1039/c5nj03175c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A di-copper(ii) complex is formed in a bis-tren cage featuring a thioether function, capable of grafting on a monolayer of gold nanostars.
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Affiliation(s)
| | - Valeria Amendola
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
| | - Greta Bergamaschi
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
| | - Elisa Cabrini
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
| | - Giacomo Dacarro
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
- Dipartimento di Fisica
| | - Nadia Rossi
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
| | - Angelo Taglietti
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
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Alibrandi G, Amendola V, Bergamaschi G, Fabbrizzi L, Licchelli M. Bistren cryptands and cryptates: versatile receptors for anion inclusion and recognition in water. Org Biomol Chem 2015; 13:3510-24. [PMID: 25645726 DOI: 10.1039/c4ob02618g] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Bistren cryptands can be easily synthesised through the Schiff base condensation of two molecules of tren and three molecules of a dialdehyde, followed by hydrogenation of the six C=N double bonds to give octamine cages, whose ellipsoidal cavity can be varied at will, by choosing the appropriate dialdehyde, in order to include substrates of varying sizes and shapes. Bistrens can operate as effective anion receptors in two ways: (i) in their protonated form, providing six secondary ammonium groups capable of establishing hydrogen bonding interactions with the anion; (ii) as dicopper(II) cryptates, in which the two coordinatively unsaturated metal centres can be bridged by an ambidentate anion. Representative examples of the two approaches, as well as the design of an anion molecular dispenser, in which a dicopper(II) bistren cryptate acts as a bottle will be illustrated.
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Affiliation(s)
- Giuseppe Alibrandi
- Dipartimento di Scienze Chimiche, Università di Messina, Viale F. Stagno d'Alcontres 31, Villaggio S. Agata, 98166 Messina, Italy
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Boiocchi M, Licchelli M, Milani M, Poggi A, Sacchi D. Oxo-Anion Recognition by Mono- and Bisurea Pendant-Arm Macrocyclic Complexes. Inorg Chem 2014; 54:47-58. [DOI: 10.1021/ic501527k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Massimo Boiocchi
- Centro Grandi Strumenti and ‡Dipartimento di Chimica, Università di Pavia, via T. Taramelli 12, 27100 Pavia, Italy
| | - Maurizio Licchelli
- Centro Grandi Strumenti and ‡Dipartimento di Chimica, Università di Pavia, via T. Taramelli 12, 27100 Pavia, Italy
| | - Michele Milani
- Centro Grandi Strumenti and ‡Dipartimento di Chimica, Università di Pavia, via T. Taramelli 12, 27100 Pavia, Italy
| | - Antonio Poggi
- Centro Grandi Strumenti and ‡Dipartimento di Chimica, Università di Pavia, via T. Taramelli 12, 27100 Pavia, Italy
| | - Donatella Sacchi
- Centro Grandi Strumenti and ‡Dipartimento di Chimica, Università di Pavia, via T. Taramelli 12, 27100 Pavia, Italy
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