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Parks FC, Sheetz EG, Stutsman SR, Lutolli A, Debnath S, Raghavachari K, Flood AH. Revealing the Hidden Costs of Organization in Host-Guest Chemistry Using Chloride-Binding Foldamers and Their Solvent Dependence. J Am Chem Soc 2022; 144:1274-1287. [PMID: 35015538 DOI: 10.1021/jacs.1c10758] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Preorganization is a key concept in supramolecular chemistry. Preorganized receptors enhance binding by minimizing the organization costs associated with adopting the conformation needed to orient the binding sites toward the guest. Conversely, poorly organized receptors show affinities below what is possible based on the potential of their specific binding interactions. Despite the fact that the organization energy is paid each time like a tax, its value has never been measured directly, though many compounds have been developed to measure its effects. We present a method to quantify the hidden costs of receptor organization by independently measuring the contribution it makes to chloride complexation by a flexible foldameric receptor. This method uses folding energy to approximate organization energy and relies on measurement of the coil-helix equilibrium as a function of solvent. We also rely on the finding, established with rigid receptors, that affinity is inversely related to the solvent dielectric and expect the same for the foldamer's helically organized state. Increasing solvent polarity across nine dichloromethane-acetonitrile mixtures we see an unusual V-shape in affinity (decrease then increase). Quantitatively, this shape arises from weakened hydrogen-bonding interactions with solvent polarity followed by solvent-driven folding into an organized helix. We confirm that dielectric screening impacts the stability of host-guest complexes of flexible foldamers just like rigid receptors. These results experimentally verify the canonical model of binding (affinity depends on the sum of organization and noncovalent interactions). The picture of how solvent impacts complex stability and conformational organization thereby helps lay the groundwork for de novo receptor design.
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Affiliation(s)
- Fred C Parks
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Edward G Sheetz
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Sydney R Stutsman
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Alketa Lutolli
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Sibali Debnath
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Amar H Flood
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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2
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Witt K, Kaczorowska MA, Bożejewicz D, Urbaniak W. Efficient Recovery of Noble Metal Ions (Pd 2+, Ag +, Pt 2+, and Au 3+) from Aqueous Solutions Using N,N'-Bis(salicylidene)ethylenediamine (Salen) as an Extractant (Classic Solvent Extraction) and Carrier (Polymer Membranes). MEMBRANES 2021; 11:863. [PMID: 34832092 PMCID: PMC8625233 DOI: 10.3390/membranes11110863] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 11/16/2022]
Abstract
This paper presents the results of the first application of N,N'-bis(salicylidene)ethylenediamine (salen) as an extractant in classical liquid-liquid extraction and as a carrier in membrane processes designed for the recovery of noble metal ions (Pd2+, Ag+, Pt2+, and Au3+) from aqueous solutions. In the case of the utilization of membranes, both sorption and desorption were investigated. Salen has not been used so far in the sorption processes of precious metal ions. Recovery experiments were performed on single-component solutions (containing only one type of metal ions) and polymetallic solutions (containing ions of all four metals). The stability constants of the obtained complexes were determined spectrophotometrically. In contrast, electrospray ionization high-resolution mass spectrometry (ESI-HRMS) was applied to examine the elemental composition and charge of the generated complexes of chosen noble metal ions and salen molecules. The results show the great potential of N,N'-bis(salicylidene)ethylenediamine as both an extractant and a carrier. In the case of single-component solutions, the extraction percentage was over 99% for all noble metal ions (molar ratio M:L of 1:1), and in the case of a polymetallic solution, it was the lowest, but over 94% for platinum ions and the highest value (over 99%) for gold ions. The percentages of sorption (%Rs) of metal ions from single-component solutions using polymer membranes containing N,N'-bis(salicylidene)ethylenediamine as a carrier were highest after 24 h of the process (93.23% for silver(I) ions, 74.99% for gold(III) ions, 69.11% and 66.13% for palladium(II) and platinum(II) ions, respectively), similar to the values obtained for the membrane process conducted in multi-metal solutions (92.96%, 84.26%, 80.94%, and 48.36% for Pd(II), Au(III), Ag(I), and Pt(II) ions, respectively). The percentage of desorption (%Rdes) was very high for single-component solutions (the highest, i.e., 99%, for palladium solution and the lowest, i.e., 88%, for silver solution), while for polymetallic solutions, these values were slightly lower (for Pt(II), it was the lowest at 63.25%).
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Affiliation(s)
- Katarzyna Witt
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 3 Seminaryjna Street, PL 85326 Bydgoszcz, Poland; (M.A.K.); (D.B.)
| | - Małgorzata A. Kaczorowska
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 3 Seminaryjna Street, PL 85326 Bydgoszcz, Poland; (M.A.K.); (D.B.)
| | - Daria Bożejewicz
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 3 Seminaryjna Street, PL 85326 Bydgoszcz, Poland; (M.A.K.); (D.B.)
| | - Włodzimierz Urbaniak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, 8 Uniwersytetu Poznańskiego Street, PL 61712 Poznań, Poland;
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3
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Arens V, Naseer MM, Lutter M, Iovkova-Berends L, Jurkschat K. Organotin-Functionalized Crown Ethers as Ditopic Hosts for Lithium Salts: Synthesis, Structures and Complexation Studies of X3
SnCH2
[16]-crown-5 (X = I, Br, Cl). Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Verena Arens
- Lehrstuhl für Anorganische Chemie II; Technische Universität Dortmund; 44221 Dortmund Germany
| | - Muhammad Moazzam Naseer
- Lehrstuhl für Anorganische Chemie II; Technische Universität Dortmund; 44221 Dortmund Germany
- Department of Chemistry; Quaid-i-Azam University; 45320 Islamabad Pakistan
| | - Michael Lutter
- Lehrstuhl für Anorganische Chemie II; Technische Universität Dortmund; 44221 Dortmund Germany
| | - Ljuba Iovkova-Berends
- Lehrstuhl für Anorganische Chemie II; Technische Universität Dortmund; 44221 Dortmund Germany
| | - Klaus Jurkschat
- Lehrstuhl für Anorganische Chemie II; Technische Universität Dortmund; 44221 Dortmund Germany
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4
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Xu Z, Wang K, Liu Q, Guo F, Xiong Z, Li Y, Wang Q. A bifunctional adsorbent of silica gel-immobilized Schiff base derivative for simultaneous and selective adsorption of Cu(II) and SO42−. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.09.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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5
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Memon S, Bhatti AA, Bhatti AA, Ocak Ü, Ocak M. Calix[4]arene Based Dual Fluorescent Sensor for Al3+ and S2O7 2−. J Fluoresc 2016; 26:1591-9. [DOI: 10.1007/s10895-016-1843-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 05/30/2016] [Indexed: 01/12/2023]
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6
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Ghosh TK, Dutta R, Ghosh P. Unusual Recognition and Separation of Hydrated Metal Sulfates [M2(μ-SO4)2(H2O)n, M = ZnII, CdII, CoII, MnII] by a Ditopic Receptor. Inorg Chem 2016; 55:3640-52. [DOI: 10.1021/acs.inorgchem.6b00176] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Tamal Kanti Ghosh
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Ranjan Dutta
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Pradyut Ghosh
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
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Busschaert N, Caltagirone C, Van Rossom W, Gale PA. Applications of Supramolecular Anion Recognition. Chem Rev 2015; 115:8038-155. [PMID: 25996028 DOI: 10.1021/acs.chemrev.5b00099] [Citation(s) in RCA: 852] [Impact Index Per Article: 94.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Claudia Caltagirone
- ‡Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato, Cagliari, Italy
| | - Wim Van Rossom
- †Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Philip A Gale
- †Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
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8
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Transformation of a ditopic Schiff base nickel(II) nitrate complex into an unsymmetrical Schiff base complex by partial hydrolytic degradation: structural and density functional theory studies. TRANSIT METAL CHEM 2014. [DOI: 10.1007/s11243-014-9840-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Cao L, Jiang R, Zhu Y, Wang X, Li Y, Li Y. Synthesis of 1,2,3-Triazole-4-carboxamide-Containing Foldamers for Sulfate Recognition. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301838] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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10
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McMahon BK, Parker D. Selective ion pair recognition of citrate and zinc ions in water by ratiometric luminescence signaling. RSC Adv 2014. [DOI: 10.1039/c4ra07894b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cooperative ion pair recognition of citrate and zinc ions occurs selectively in water at pH 7.4 and is signalled by modulation of europium emission in a ditopic macrocyclic complex.
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Affiliation(s)
| | - David Parker
- Department of Chemistry
- Durham University
- Durham DH1 3LE, UK
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11
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Turkington JR, Bailey PJ, Love JB, Wilson AM, Tasker PA. Exploiting outer-sphere interactions to enhance metal recovery by solvent extraction. Chem Commun (Camb) 2013; 49:1891-9. [DOI: 10.1039/c2cc37874d] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Li YJ, Xu L, Yang WL, Liu HB, Lai SW, Che CM, Li YL. Amidetriazole: A Versatile Building Block for Construction of Oxyanion Anion Receptors. Chemistry 2012; 18:4782-90. [DOI: 10.1002/chem.201102760] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Indexed: 11/09/2022]
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13
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Mihan FY, Bartocci S, Bruschini M, De Bernardin P, Forte G, Giannicchi I, Cort AD. Ion-Pair Recognition by Metal - Salophen and Metal - Salen Complexes. Aust J Chem 2012. [DOI: 10.1071/ch12353] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The development of heteroditopic receptor systems that can simultaneously bind cationic and anionic species is one of the most challenging research topics in supramolecular chemistry, attracting the attention of a large number of research groups worldwide. Such an interest is due especially to the fact that the overall receptor–ion-pair complex is neutral and this can be advantageous in many situations, such as salt solubilization and extraction, and membrane-transport applications. Receptors designed for ion-pair complexation are molecules comprising well-known anion-binding motifs and familiar cation-binding sites. An important family of compounds that can use metal Lewis-acidic centres for anion recognition and that can be easily derivatized to introduce an additional binding site for the cation is metal–salophen and metal–salen complexes. This short review shows that the high versatility of salen and salophen ligands and of the corresponding metal complexes allows, through simple modifications of the basic skeleton, the obtention of highly efficient receptors for ion pairs.
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Bates GW, Davidson JE, Forgan RS, Gale PA, Henderson DK, King MG, Light ME, Moore SJ, Tasker PA, Tong CC. A dual host approach to NiSO4 extraction. Supramol Chem 2011. [DOI: 10.1080/10610278.2011.631706] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Gareth W. Bates
- a School of Chemistry, University of Southampton , Southampton , SO17 1BJ , UK
| | - James E. Davidson
- b School of Chemistry, University of Edinburgh , Edinburgh , EH9 3JJ , UK
| | - Ross S. Forgan
- b School of Chemistry, University of Edinburgh , Edinburgh , EH9 3JJ , UK
| | - Philip A. Gale
- a School of Chemistry, University of Southampton , Southampton , SO17 1BJ , UK
| | - David K. Henderson
- b School of Chemistry, University of Edinburgh , Edinburgh , EH9 3JJ , UK
| | | | - Mark E. Light
- a School of Chemistry, University of Southampton , Southampton , SO17 1BJ , UK
| | - Stephen J. Moore
- a School of Chemistry, University of Southampton , Southampton , SO17 1BJ , UK
| | - Peter A. Tasker
- b School of Chemistry, University of Edinburgh , Edinburgh , EH9 3JJ , UK
| | - Christine C. Tong
- a School of Chemistry, University of Southampton , Southampton , SO17 1BJ , UK
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15
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Moyer BA, Sloop FV, Fowler CJ, Haverlock TJ, Kang HA, Delmau LH, Bau DM, Hossain MA, Bowman-James K, Shriver JA, Bill NL, Gross DE, Marquez M, Lynch VM, Sessler JL. Enhanced liquid–liquid anion exchange using macrocyclic anion receptors: effect of receptor structure on sulphate–nitrate exchange selectivity. Supramol Chem 2010. [DOI: 10.1080/10610271003763263] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Bruce A. Moyer
- a Chemical Sciences Division, Oak Ridge National Laboratory , P.O. Box 2008, Oak Ridge , TN , 37831-6119 , USA
| | - Frederick V. Sloop
- a Chemical Sciences Division, Oak Ridge National Laboratory , P.O. Box 2008, Oak Ridge , TN , 37831-6119 , USA
| | - Christopher J. Fowler
- a Chemical Sciences Division, Oak Ridge National Laboratory , P.O. Box 2008, Oak Ridge , TN , 37831-6119 , USA
| | - Tamara J. Haverlock
- a Chemical Sciences Division, Oak Ridge National Laboratory , P.O. Box 2008, Oak Ridge , TN , 37831-6119 , USA
| | - Hyun-Ah Kang
- a Chemical Sciences Division, Oak Ridge National Laboratory , P.O. Box 2008, Oak Ridge , TN , 37831-6119 , USA
| | - Lætitia H. Delmau
- a Chemical Sciences Division, Oak Ridge National Laboratory , P.O. Box 2008, Oak Ridge , TN , 37831-6119 , USA
| | - Diadra M. Bau
- a Chemical Sciences Division, Oak Ridge National Laboratory , P.O. Box 2008, Oak Ridge , TN , 37831-6119 , USA
| | - Md Alamgir Hossain
- b Department of Chemistry , University of Kansas , Lawrence , KS , 66045 , USA
| | | | - James A. Shriver
- c Department of Chemistry and Biochemistry , Institute for Cellular and Molecular Biology, The University of Texas , Austin , TX , 78712 , USA
| | - Nathan L. Bill
- c Department of Chemistry and Biochemistry , Institute for Cellular and Molecular Biology, The University of Texas , Austin , TX , 78712 , USA
| | - Dustin E. Gross
- c Department of Chemistry and Biochemistry , Institute for Cellular and Molecular Biology, The University of Texas , Austin , TX , 78712 , USA
| | - Manuel Marquez
- c Department of Chemistry and Biochemistry , Institute for Cellular and Molecular Biology, The University of Texas , Austin , TX , 78712 , USA
| | - Vincent M. Lynch
- c Department of Chemistry and Biochemistry , Institute for Cellular and Molecular Biology, The University of Texas , Austin , TX , 78712 , USA
| | - Jonathan L. Sessler
- c Department of Chemistry and Biochemistry , Institute for Cellular and Molecular Biology, The University of Texas , Austin , TX , 78712 , USA
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16
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Wenzel M, Bruere SR, Knapp QW, Tasker PA, Plieger PG. Zwitterionic dicopper helicates: anion encapsulation and binding studies. Dalton Trans 2010; 39:2936-41. [PMID: 20200722 DOI: 10.1039/b922998a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and spectroscopic studies of a dicopper(II) double helicate capable of binding anions is described. X-Ray crystallographic analysis of three anion variations of the complex have shown that the helicate is capable of accommodating anions with an approximate volume of 0.09 nm(3) and smaller. ESI-MS revealed that the supramolecular complexes retain the 2 : 2 ligand : metal cluster in solution. Spectrometric analysis has shown the complex is capable of binding anions in a 1 : 1 ratio of helicate to anion, in the order SO(4)(2-) > HPO(4)(2-) > ClO(4)(-) approximately BF(4)(-) approximately NO(3)(-). We demonstrate that coordination to the metal centre, H-bonding and electrostatic interactions all play a role in encapsulating the anions.
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Affiliation(s)
- Marco Wenzel
- Institute of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand
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17
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Forgan RS, Davidson JE, Fabbiani FPA, Galbraith SG, Henderson DK, Moggach SA, Parsons S, Tasker PA, White FJ. Cation and anion selectivity of zwitterionic salicylaldoxime metal salt extractants. Dalton Trans 2010; 39:1763-70. [PMID: 20449420 DOI: 10.1039/b916877j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3-Dialkylaminomethyl substituted salicylaldoximes are efficient metal salt extractants, and, in contrast to related "salen"-based reagents, are sufficiently stable to acid hydrolysis to allow commercial application in base metal recovery. Crystal structures show that metal salts are bound by a zwitterionic form of the reagents, with copper(II) nitrate, tetrafluoroborate and trifluoroacetate forming [Cu()(2)X(2)] assemblies in a tritopic arrangement with a trans-disposition of the anions outwith the coordination sphere. Copper(II) chloride, bromide and zinc(II) chloride form 1:1 assemblies, [Cu()X(2)], with the halides in the inner coordination sphere of the metal, leading to high chloride selectivity and very good mass transport efficiencies of CuCl(2). Introduction of the anion-binding sites into the salicylaldoxime extractants changes their cation selectivities; the ligands co-extract small amounts of Fe(III) along with Cu(II) from mixed metal aqueous feed solutions, an issue which will need to be addressed prior to industrial application.
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Affiliation(s)
- Ross S Forgan
- School of Chemistry, University of Edinburgh, Edinburgh, UKEH9 3JJ
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18
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Gale PA, Hiscock JR, Jie CZ, Hursthouse MB, Light ME. Acyclic indole and carbazole-based sulfate receptors. Chem Sci 2010. [DOI: 10.1039/c0sc00202j] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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19
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Syntheses and studies of flexible amide ligands: a toolkit for studying metallo-supramolecular assemblies for anion binding. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.04.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Warr RJ, Westra AN, Bell KJ, Chartres J, Ellis R, Tong C, Simmance TG, Gadzhieva A, Blake AJ, Tasker PA, Schröder M. Selective Extraction and Transport of the [PtCl6]2−Anion through Outer-Sphere Coordination Chemistry. Chemistry 2009; 15:4836-50. [PMID: 19370745 DOI: 10.1002/chem.200802377] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rebecca J Warr
- School of Chemistry, University Park, University of Nottingham, Nottingham, NG7 2RD, UK
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21
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Bianketti S, Blake AJ, Wilson C, Hubberstey P, Champness NR, Schröder M. Second-sphere hydrogen-bonding in heteroditopic mercaptopyridinium copper(I) frameworks. CrystEngComm 2009. [DOI: 10.1039/b813672f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Bell K, Westra A, Warr R, Chartres J, Ellis R, Tong C, Blake A, Tasker P, Schröder M. Outer-Sphere Coordination Chemistry: Selective Extraction and Transport of the [PtCl6]2− Anion. Angew Chem Int Ed Engl 2008; 47:1745-8. [DOI: 10.1002/anie.200703272] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Bell K, Westra A, Warr R, Chartres J, Ellis R, Tong C, Blake A, Tasker P, Schröder M. Outer-Sphere Coordination Chemistry: Selective Extraction and Transport of the [PtCl6]2− Anion. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703272] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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