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Ciarrocchi C, Fabbrizzi L, Licchelli M, Taglietti A. Electrochemically Driven Swinging of a Nitrobenzyl Pendant Arm in a Nickel Scorpionand Complex. Chemistry 2022; 28:e202200462. [PMID: 35234313 PMCID: PMC9311437 DOI: 10.1002/chem.202200462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Indexed: 11/06/2022]
Abstract
A radical anion −NO2.− is formed upon an electrochemically reversible one‐electron reduction of the square‐planar NiII complex of N‐nitrobenzylcyclam. The −NO2.− group goes to occupy an axial position of the metal ion, thus establishing a significant electronic interaction with the metal center. In particular, the ESR spectrum supports the occurrence of an electron transfer from −NO2.− to the metal, which therefore presents a significant NiI character. On re‐oxidation, the nitrobenzyl side chain detaches and the NiII complex is restored, providing an example of a fully reversible redox driven intramolecular motion.
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Affiliation(s)
| | - Luigi Fabbrizzi
- Dipartimento di Chimica Università di Pavia 27100 Pavia Italy
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2
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Iqbal T, Arshad N, Hashim J, Ali SA, Zehra B, Ahmad MS, Hassan N, Ullah A, Hamid SZ, Isaac IO. Natural products based crown ethers: synthesis and their anticancer potential. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022; 24:268-277. [PMID: 34009076 DOI: 10.1080/10286020.2021.1918118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Natural products based novel crown ethers have been prepared by employing biologically active natural structures including tetrahydroisoquinoline, chrysin and biochanin-A as the side arms. The resulting crown scaffolds were evaluated for their anticancer potential against two cancer cell lines i.e. NCI-H460 (non-small lung carcinoma), MCF-7 (breast adenocarcinoma). The comparative study showed that the addition of crown scaffold put marked effects on antiproliferative profile of parent natural precursors and is significant for lung carcinoma in particular. Biochanin-A derived crown ether showed three (03) folds higher antiproliferative activity (IC50 = 6.08 ± 0.07 µM) against lung carcinoma as compared to standard drug cisplatin (IC50 = 19.00 ± 1.24 µM). Cytotoxic trends for NIH-3T3 cell lines were also examined and found reduced as compared to parent natural structures. Hence, these findings could open a new pathway towards developing effective carcinostatic drugs.HIGHLIGHTSFour natural products based novel crown ethers have been developed.Comparative antiproliferative screening of crown ethers and natural precursors.Addition of crown showed marked effects on anticancer profile of natural products.Crown formation is significant for lung carcinoma potential in particular.Biochanin-A derived crown ether found three folds more active than standard drug.
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Affiliation(s)
- Tahseen Iqbal
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
| | - Nuzhat Arshad
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
- Department of Chemistry, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Jamshed Hashim
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
| | - Syed Abid Ali
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
| | - Binte Zehra
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
| | - Malik Shoaib Ahmad
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
| | - Nabila Hassan
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
- Department of Chemistry, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Arif Ullah
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
| | - Syeda Zehra Hamid
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
| | - Ibanga Okon Isaac
- H.E.J. Research Institute of Chemistry, ICCBS, University of Karachi, Karachi 75270, Pakistan
- Department of Chemistry, Akwa Ibom State University, Ikot Akpaden Mkpat Enin L.G.A., Akwa Ibom State, P.M.B 1167, Uyo, Nigeria
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3
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Nitro group as a redox switch in urea-based receptors of anions. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Thomas JA, Zubi A, Alnafisah HA, Turega S, Marques I, Gomes JRB, Félix V. Being positive is not everything - experimental and computational studies on the selectivity of a self-assembled, multiple redox-state, receptor that binds anions with up to picomolar affinities. Chemistry 2021; 28:e202102465. [PMID: 34755915 DOI: 10.1002/chem.202102465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Indexed: 11/06/2022]
Abstract
The interaction of the self-assembled trinuclear ruthenium bowl 1 3+ , that displays three other accessible oxidation states, with oxo-anions is investigated. Using a combination of NMR and electrochemical experimental data, estimates of the binding affinities of 1 4+ , 1 5+ , and 1 6+ for both halide and oxo-anions were derived. This analysis revealed that, across the range of oxidation states of the host, both high anion binding affinities (>10 9 M -1 for specific guests bound to 1 6+ ) and high selectivities (a range of >10 7 M -1 ) were observed. As the crystal structure of binding of the hexafluorophosphate anion revealed that the host has two potential binding sites (named the α and β pockets), the host-guest properties of both putative binding sites of the bowl, in all of its four oxidation states, were investigated through detailed quantum-based computational studies. These studies revealed that, due to the interplay of electrostatically assisted hydrogen-bonding and anion-π interactions, binding to the α pocket is generally preferred, except for the case of the relatively large and lipophilic hexafluorophosphate anionic guest and the host in the highest oxidation states, where the β pocket becomes relatively favourable. This analysis confirms that host-guest interactions involving structurally complex supramolecular architectures are driven by a combination of non-covalent interactions and, even in the case of charged binding pairs, electrostatics alone cannot accurately define these recognition processes.
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Affiliation(s)
- Jim Antony Thomas
- University of Sheffiled, Department of Chemistry, Brook Hill, S3 7HF, Sheffield, UNITED KINGDOM
| | - Ahmed Zubi
- The University of Sheffield, Chemistry, UNITED KINGDOM
| | | | - Simon Turega
- Sheffield Hallam University, Chemistry, UNITED KINGDOM
| | - Igor Marques
- University of Aveiro CICECO: Universidade de Aveiro CICECO, Chemistry, PORTUGAL
| | - José R B Gomes
- Centro de Investigação em Materiais Cerâmicos e Compósitos: Universidade de Aveiro CICECO, Chemistry, PORTUGAL
| | - Vítor Félix
- University of Aveiro CICECO: Universidade de Aveiro CICECO, Chemistry, PORTUGAL
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Smith DK. Exploring the Role of H-Bonding in Organic Electrochemistry - From Supramolecular Applications to Mechanistic Investigations. CHEM REC 2021; 21:2488-2501. [PMID: 34487420 DOI: 10.1002/tcr.202100186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/22/2021] [Indexed: 11/09/2022]
Abstract
H-bonds can exert a substantial impact on the course of organic electrode reactions due to their ability to stabilize charged intermediates and products formed during these reactions, as well as facilitate proton-coupled electron transfer (PCET) reactions. This has fundamental implications for the mechanism of organic electrode reactions, but also practical impact in supramolecular chemistry and potentially synthetic electrochemistry. My group's main focus has been on the supramolecular applications, using electron transfer to alter the strength of H-bonds to create highly redox-responsive H-bond dimers. Initially we sought to avoid proton transfer because we feared that would lead to irreversible electrochemistry. However, inevitably proton transfer did show up, but, to our surprise, did not lead to irreversible electrochemistry. To explain this, we developed a new mechanism, the "wedge scheme", that shows how H-bonding can facilitate reversible electron and proton transfer. This insight recently led us to a new PCET-based design strategy for the creation of our most highly redox-responsive H-bond dimers yet.
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Affiliation(s)
- Diane K Smith
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Dr, San Diego, CA, 92182, USA
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Sakata Y, Kobayashi S, Akine S. Two-step modulation of ion recognition using a bis(saloph)-macrocyclic host having a 24-crown-8-like cavity. Chem Commun (Camb) 2017; 53:6363-6366. [PMID: 28555226 DOI: 10.1039/c7cc02641b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Precise modulation of cation binding affinity was accomplished by the efficient two-step conversion of a newly synthesized macrocyclic ligand H4L2 having a 24-crown-8-like cavity and two saloph moieties. The conversion of H4L2 into L2Ni2 resulted in a 120-fold enhancement in the binding affinity towards Cs+. The electrochemical reduction of L2Ni2 further enhanced the recognition ability by 3 orders of magnitude.
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Affiliation(s)
- Yoko Sakata
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
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Lanterna A, Pino E, Doménech-Carbó A, González-Béjar M, Pérez-Prieto J. Enhanced catalytic electrochemical reduction of dissolved oxygen with ultraclean cucurbituril[7]-capped gold nanoparticles. NANOSCALE 2014; 6:9550-9553. [PMID: 24993482 DOI: 10.1039/c4nr01967a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Gold nanoparticles capped with cucurbituril[7] have been prepared in the absence of metallic cations and organic ligands. Remarkably, these nanohybrids encapsulate dissolved oxygen and are highly active in electrochemical reduction. The effect of the presence of sodium and ammonium salts on this catalysed process is also analysed.
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Affiliation(s)
- Anabel Lanterna
- Instituto de Ciencia Molecular (ICMol)/Departamento de Química Orgánica, Universidad de Valencia, C/Catedrático José Beltrán 2, 46980, Paterna, Valencia, Spain.
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8
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dsDNA, ssDNA, G-quadruplex DNA, and nucleosomal DNA electrochemical screening using canthin-6-one alkaloid-modified electrodes. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.11.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Anchaliya D, Sharma U. Napthaquinone derived ionophores: interaction with biologically important metal ions (Li+, Na+, K+, Mg2+ and Ca2+). J INCL PHENOM MACRO 2013. [DOI: 10.1007/s10847-013-0369-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Doménech-Carbó A, Maciuk A, Figadère B, Poupon E, Cebrián-Torrejón G. Solid-State Electrochemical Assay of Heme-Binding Molecules for Screening of Drugs with Antimalarial Potential. Anal Chem 2013; 85:4014-21. [DOI: 10.1021/ac303746k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antonio Doménech-Carbó
- Departament
de Química Analítica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100
Burjassot, Valencia, Spain
| | - Alexandre Maciuk
- Laboratoire de Pharmacognosie, UMR CNRS 8076 BioCIS, LabEx LERMIT,
Faculté de Pharmacie, Université Paris-Sud, 5, rue J.-B. Clément, 92296 Châtenay-Malabry, France
| | - Bruno Figadère
- Laboratoire de Pharmacognosie, UMR CNRS 8076 BioCIS, LabEx LERMIT,
Faculté de Pharmacie, Université Paris-Sud, 5, rue J.-B. Clément, 92296 Châtenay-Malabry, France
| | - Erwan Poupon
- Laboratoire de Pharmacognosie, UMR CNRS 8076 BioCIS, LabEx LERMIT,
Faculté de Pharmacie, Université Paris-Sud, 5, rue J.-B. Clément, 92296 Châtenay-Malabry, France
| | - Gerardo Cebrián-Torrejón
- Departament
de Química Analítica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100
Burjassot, Valencia, Spain
- Laboratoire de Pharmacognosie, UMR CNRS 8076 BioCIS, LabEx LERMIT,
Faculté de Pharmacie, Université Paris-Sud, 5, rue J.-B. Clément, 92296 Châtenay-Malabry, France
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11
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Blanchard PY, Niebel C, Boisard S, Alévêque O, Sanguinet L, Dias M, Breton T, Gautier C, Levillain E. Evidence of electrochemical transduction of cation recognition by TEMPO derivatives. NEW J CHEM 2012. [DOI: 10.1039/c2nj20796f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Spectrophotometric study of the charge transfer complexes of 4′-nitrobenzo-15-crown-5 and benzo-15-crown-5 with iodine in nonaqueous solvents. CHINESE CHEM LETT 2011. [DOI: 10.1016/j.cclet.2010.11.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Sahli R, Raouafi N, Boujlel K, Maisonhaute E, Schöllhorn B, Amatore C. Electrochemically active phenylenediamine probes for transition metal cation detection. NEW J CHEM 2011. [DOI: 10.1039/c0nj00638f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Amendola V, Boiocchi M, Colasson B, Fabbrizzi L, Monzani E, Douton-Rodriguez MJ, Spadini C. Redox Active Cage for the Electrochemical Sensing of Anions. Inorg Chem 2008; 47:4808-16. [DOI: 10.1021/ic800099j] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Valeria Amendola
- Dipartimento di Chimica Generale, Sezione INSTM, and Centro Grandi Strumenti, Università di Pavia, 27100, Pavia, Italy
| | - Massimo Boiocchi
- Dipartimento di Chimica Generale, Sezione INSTM, and Centro Grandi Strumenti, Università di Pavia, 27100, Pavia, Italy
| | - Benoît Colasson
- Dipartimento di Chimica Generale, Sezione INSTM, and Centro Grandi Strumenti, Università di Pavia, 27100, Pavia, Italy
| | - Luigi Fabbrizzi
- Dipartimento di Chimica Generale, Sezione INSTM, and Centro Grandi Strumenti, Università di Pavia, 27100, Pavia, Italy
| | - Enrico Monzani
- Dipartimento di Chimica Generale, Sezione INSTM, and Centro Grandi Strumenti, Università di Pavia, 27100, Pavia, Italy
| | - Maria Jesús Douton-Rodriguez
- Dipartimento di Chimica Generale, Sezione INSTM, and Centro Grandi Strumenti, Università di Pavia, 27100, Pavia, Italy
| | - Cristina Spadini
- Dipartimento di Chimica Generale, Sezione INSTM, and Centro Grandi Strumenti, Università di Pavia, 27100, Pavia, Italy
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16
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On the oxidation of Wurster’s reagent and the Wurster’s crown analog of 15-crown-5 in the presence of alkali metal cations. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2007.09.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Elliott EK, Hu J, Gokel GW. The Fluorescence Properties of Free and Cation-complexed Lariat Ethers having Sidearms Terminated by a Benzene Ring. Supramol Chem 2007. [DOI: 10.1080/10610270600954861] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Elizabeth K. Elliott
- a Department of Molecular Biology and Pharmacology , Washington University School of Medicine 660 South Euclid Avenue , Campus Box 8103, St. Louis, MO, USA
| | - Jiaxin Hu
- b Department of Chemistry , Washington University , 1 Brookings Drive, St. Louis, MO, USA
| | - George W. Gokel
- a Department of Molecular Biology and Pharmacology , Washington University School of Medicine 660 South Euclid Avenue , Campus Box 8103, St. Louis, MO, USA
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Hasani M, Akbari S. A spectrophotometric and thermodynamic study of the charge-transfer complexes of iodine with 2-aminomethyl-15-crown-5 in chloroform and 1,2-dichloroethane solutions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 67:139-44. [PMID: 16942912 DOI: 10.1016/j.saa.2006.06.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2006] [Accepted: 06/27/2006] [Indexed: 05/11/2023]
Abstract
Interaction of 2-aminomethyl-15-crown-5 (AM15C5) with iodine has been investigated spectrophotometrically in chloroform and 1,2-dichloroethane (1,2-DCE) solutions. The observed time dependence of the charge-transfer band and subsequent formation of I(3)(-) in solution were related to the slow transformation of the initially formed 1:1 AM15C5.I(2) outer complex to an inner electron donor-acceptor (EDA) complex, followed by fast reaction of the inner complex with iodine to form a triiodide ion. The pseudo-first-order rate constants were evaluated from the absorbance- and conductivity-time data. The stoichiometry and formation constants of the resulting EDA complexes have also been determined. Thermodynamic parameters, Delta H degrees and Delta S degrees , of the complexes have been determined from the temperature dependence of stability constants by Van't Hoff equation. The results indicate that iodine complexes of AM15C5 in both solvents are enthalpy stabilized but entropy destabilized. The influence of solvent properties on the kinetics and stability of the resulting charge-transfer complexes are discussed.
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Affiliation(s)
- Masoumeh Hasani
- Department of Chemistry, College of Science, Bu-Ali Sina University, Hamadan 65174, Iran.
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19
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Echegoyen L, Parra D, Bartolotti LJ, Hanlon C, Gokel GW. Increased Rigidity in Complexes Formed from Negatively Charged Lariat Ethers and Alkali Metal Cations. J COORD CHEM 2007. [DOI: 10.1080/00958978808080691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Luis Echegoyen
- a Department of Chemistry , University of Miami Coral Gables , Florida , 33124 , U.S.A
| | - Dennisse Parra
- a Department of Chemistry , University of Miami Coral Gables , Florida , 33124 , U.S.A
| | - Libero J. Bartolotti
- a Department of Chemistry , University of Miami Coral Gables , Florida , 33124 , U.S.A
| | - Christopher Hanlon
- a Department of Chemistry , University of Miami Coral Gables , Florida , 33124 , U.S.A
| | - George W. Gokel
- a Department of Chemistry , University of Miami Coral Gables , Florida , 33124 , U.S.A
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Izatt RM, Clark GA, Bradshaw JS, Lamb JD, Christensen JJ. Macrocycle-Facilitated Transport of Ions in Liquid Membrane Systems. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/03602548608068424] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Liu Y, Dong SP, Zheng H, Inoue Y, Ouchi M. Molecular Design of Crown Ethers. 17[1]. Complexation Thermodynamics of Light Lanthanoid Nitrates with N-Benzylaza-21-crown-7 in Acetonitrile. Supramol Chem 2006. [DOI: 10.1080/10610270008049134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Shu-Ping Dong
- a Department of Chemistry , Nankai University , Tianjin, 300071, China
| | - Hao Zheng
- a Department of Chemistry , Nankai University , Tianjin, 300071, China
| | - Yoshihisa Inoue
- b Faculty of Engineering , Osaka University , Yamadaoka, Suita, 565, Japan
| | - Mikio Ouchi
- c Department of Applied Chemistry , Himeji Institute of Technology , Shosha, Himeji, 671-22, Japan
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Abel E, Castro R, McRobbie IM, Barbour L, Atwood JL, Kaifer AE, Gokel GW. A Redox-switchable Molecular Receptor Based on Anthraquinone. Supramol Chem 2006. [DOI: 10.1080/10610279808034987] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ernesto Abel
- a Bioorganic Chemistry Program and Department of Molecular Biology and Pharmacology , Washington University School of Medicine , Campus Box 8103, 660 S. Euclid Ave., St. Louis , MO , 63110 , U.S.A
| | - Rene Castro
- b Department of Chemistry , University of Miami , Coral Gables , FL , 33124
| | - Ian M. McRobbie
- a Bioorganic Chemistry Program and Department of Molecular Biology and Pharmacology , Washington University School of Medicine , Campus Box 8103, 660 S. Euclid Ave., St. Louis , MO , 63110 , U.S.A
| | - Len Barbour
- c Department of Chemistry , University of Missouri , Columbia , MO , 65211
| | - Jerry L. Atwood
- c Department of Chemistry , University of Missouri , Columbia , MO , 65211
| | - Angel E. Kaifer
- b Department of Chemistry , University of Miami , Coral Gables , FL , 33124
| | - George W. Gokel
- a Bioorganic Chemistry Program and Department of Molecular Biology and Pharmacology , Washington University School of Medicine , Campus Box 8103, 660 S. Euclid Ave., St. Louis , MO , 63110 , U.S.A
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Gokel GW, Leevy WM, Weber ME. Crown ethers: sensors for ions and molecular scaffolds for materials and biological models. Chem Rev 2004; 104:2723-50. [PMID: 15137805 DOI: 10.1021/cr020080k] [Citation(s) in RCA: 1059] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- George W Gokel
- Department of Molecular Biology & Pharmacology, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8103, Saint Louis, Missouri 63110, USA.
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Molecular design of crown ethers. 21.(1,2) synthesis of novel double-armed benzo-15-crown-5 lariats and their complexation thermodynamics with light lanthanoid nitrates in acetonitrile. J Org Chem 2000; 65:7105-9. [PMID: 11031035 DOI: 10.1021/jo000815q] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three new disubstituted benzo-15-crown-5 derivatives (3-5) have been synthesized from 4',5'-bis(bromomethyl)benzo-15-crown-5 (2) and the corresponding alkanols in the presence of Na(2)S(2), and their complexation thermodynamics with light lanthanoid(III) nitrates (La-Gd) have been studied in anhydrous acetonitrile at 25 degrees C. Plots of K(S) against the reciprocal ionic diameter of lanthanoid exhibited monotonically declining pattern for the parent benzo-15-crown-5 (1) and 3 but showed a characteristic peak at Ce(3+) for 4 and 5. It is interesting to note that the simple extension of the alkyl side chains in 4 and 5 can alter the cation selectivity profiles of 1 and 3. Possessing two 2-oxapropyl groups, 3 gave a comparable K(S) for La(3+) but a significantly decreased K(S) for Ce(3+) compared with the corresponding values for 1, thus exhibiting an exceptionally high La(3+)/Ce(3+) selectivity of 11. Thermodynamically, the complexation of lanthanoid perchlorates with 1 is absolutely entropy-driven in acetonitrile, while the complexation of lanthanoid nitrates with 3-5 is primarily driven by exothermic enthalpy changes with accompanying moderate entropic gain or small entropic loss.
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Beer PD, Gale PA, Chen Z. Electrochemical Recognition of Charged and Neutral Guest Species by Redox-active Receptor Molecules. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 1999. [DOI: 10.1016/s0065-3160(08)60192-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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26
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Fabre B, Simonet J. Electroactive polymers containing crown ether or polyether ligands as cation-responsive materials. Coord Chem Rev 1998. [DOI: 10.1016/s0010-8545(98)00071-x] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Liu Y, Bai XP, Inoue Y, Ouchi M. Molecular Design of Crown Ethers. 16. Calorimetric Titration of Complexation of Light Lanthanoid Nitrates with N-Benzylaza-16-crown-5 and 15,15-Dimethyl-16-crown-5 in Acetonitrile: Enhanced Selectivity for Pr3+. J Phys Chem B 1998. [DOI: 10.1021/jp9801525] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Liu
- Department of Chemistry, Nankai University, Tianjin 300071, China, Department of Molecular Chemistry, Faculty of Engineering, Osaka University, Yamadaoka, Suita 565, Japan, and Department of Applied Chemistry, Himeji Institute of Technology, Shosha, Himeji 671-22, Japan
| | - Xiao-Peng Bai
- Department of Chemistry, Nankai University, Tianjin 300071, China, Department of Molecular Chemistry, Faculty of Engineering, Osaka University, Yamadaoka, Suita 565, Japan, and Department of Applied Chemistry, Himeji Institute of Technology, Shosha, Himeji 671-22, Japan
| | - Yoshihisa Inoue
- Department of Chemistry, Nankai University, Tianjin 300071, China, Department of Molecular Chemistry, Faculty of Engineering, Osaka University, Yamadaoka, Suita 565, Japan, and Department of Applied Chemistry, Himeji Institute of Technology, Shosha, Himeji 671-22, Japan
| | - Mikio Ouchi
- Department of Chemistry, Nankai University, Tianjin 300071, China, Department of Molecular Chemistry, Faculty of Engineering, Osaka University, Yamadaoka, Suita 565, Japan, and Department of Applied Chemistry, Himeji Institute of Technology, Shosha, Himeji 671-22, Japan
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Liu Y, Han BH, Inoue Y, Ouchi M. Complexation Thermodynamics of Crown Ethers. 6.1,2 Calorimetric Titration of Cation Complexation with Some Azacrown Ethers. J Org Chem 1998. [DOI: 10.1021/jo9716340] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Liu
- Department of Chemistry, Nankai University, Tianjin, 300071, China, Department of Molecular Chemistry, Faculty of Engineering, Osaka University, Yamadaoka, Suita 565, Japan, and Department of Applied Chemistry, Himeji Institute of Technology, Shosha, Himeji 671-22, Japan
| | - Bao-Hang Han
- Department of Chemistry, Nankai University, Tianjin, 300071, China, Department of Molecular Chemistry, Faculty of Engineering, Osaka University, Yamadaoka, Suita 565, Japan, and Department of Applied Chemistry, Himeji Institute of Technology, Shosha, Himeji 671-22, Japan
| | - Yoshihisa Inoue
- Department of Chemistry, Nankai University, Tianjin, 300071, China, Department of Molecular Chemistry, Faculty of Engineering, Osaka University, Yamadaoka, Suita 565, Japan, and Department of Applied Chemistry, Himeji Institute of Technology, Shosha, Himeji 671-22, Japan
| | - Mikio Ouchi
- Department of Chemistry, Nankai University, Tianjin, 300071, China, Department of Molecular Chemistry, Faculty of Engineering, Osaka University, Yamadaoka, Suita 565, Japan, and Department of Applied Chemistry, Himeji Institute of Technology, Shosha, Himeji 671-22, Japan
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Beer PD, Gale PA, Chen Z, Drew MGB, Heath JA, Ogden MI, Powell HR. New Ionophoric Calix[4]diquinones: Coordination Chemistry, Electrochemistry, and X-ray Crystal Structures. Inorg Chem 1997; 36:5880-5893. [PMID: 11670211 DOI: 10.1021/ic9704851] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new library of ionophoric p-tert-butylcalix[4]diquinones containing ester (1), primary, secondary, and tertiary amide (2-4), and crown ether (5) substituents has been synthesized by treatment of the respective 1,3-bis-substituted p-tert-butylcalix[4]arene with Tl(OCOCF(3))(3) in trifluoroacetic acid. The structures of the free ligands 1 and 2, a p-tert-butylcalix[4]diquinone bridged at the lower rim by two linked veratrole groups (7), and a previously synthesized p-tert-butylcalix[4]diquinone bis(methyl ether) species (8) have been elucidated by X-ray crystallography. The X-ray crystal structures of 1-Sr(ClO(4))(2), 1-KClO(4), 2-NaClO(4), 4-n-BuNH(3)BF(4), 5-NaOCOCF(3), and 5-KPF(6) demonstrate that these complexes adopt the cone conformation in the solid state. Interestingly, cation-quinone oxygen atom coordination occurs at both the upper and lower rim of 2-NaClO(4) and 4-n-BuNH(3)BF(4). Solution coordination properties have been studied by both (1)H NMR and UV/vis techniques. The electrochemical properties of the "acyclic" p-tert-butylcalixdiquinones 1, 4, and 8 and their complexes have been studied using cyclic and square wave voltammetric techniques. The reduction potentials of the group 1 or 2 metal, ammonium, and alkylammonium complexes are significantly anodically shifted with respect to that of the free ligand. Addition of cations to electrochemical solutions of a p-tert-butylcalixdiquinone-crown-5 compound (5) caused large anodic shifts (by up to 555 mV in the presence of Ba(2+)) in a manner similar to that of the acyclic species.
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Affiliation(s)
- Paul D. Beer
- Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K., Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K., and Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB1 2EZ, U.K
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Chuang CL, dos Santos O, Xu X, Canary JW. Synthesis and Cyclic Voltammetry Studies of Copper Complexes of Bromo- and Alkoxyphenyl-Substituted Derivatives of Tris(2-pyridylmethyl)amine: Influence of Cation-Alkoxy Interactions on Copper Redox Potentials. Inorg Chem 1997; 36:1967-1972. [PMID: 11669805 DOI: 10.1021/ic960942y] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A combination of host-guest chemistry and coordination chemistry in the design of electrochemical sensors for alkali metal and ammonium ions is described. The sensor molecules are coordination complexes between a copper ion and a functionalized tripodal ligand. Upon presentation of the ion to the sensor molecule, a shift in the redox potential of the copper ion occurs. In the course of the study, three new alkoxyphenyl-substituted derivatives of the ligand tris(2-pyridylmethyl)amine (TPA) were prepared and characterized. The synthesis of the new ligands involved the preparation of bromopyridyl-TPA derivatives followed by Suzuki coupling with substituted phenylboronic acids. Cyclic voltammetry studies of copper complexes of the ligands indicated that steric effects played a dominant role in the overall determination of the copper redox couple. Studies of the alkoxyphenyl ligands indicated that small but reproducible changes in the copper redox couple occurred upon presentation of a guest cation that would be expected to form a complex with the copper-ligand complex.
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Affiliation(s)
- Chang-Lin Chuang
- Department of Chemistry, New York University, New York, New York 10003
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31
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Muñoz S, Gokel GW. Organometallic amphiphiles: novel mechanisms for redox chemical control of aggregation behavior. Inorganica Chim Acta 1996. [DOI: 10.1016/s0020-1693(96)05211-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Electrochemical behavior of calix[4]arenediquinones and their cation binding properties. J Electroanal Chem (Lausanne) 1995. [DOI: 10.1016/0022-0728(95)04112-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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33
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Santis GD, Fabbrizzi L, Licchelli M, Pallavicini P, Perotti A, Poggi A. Redox switchable ligands suitable for transition metal ions: Protonation, complexation and electrochemical properties of a ferrocene-modified tetraamine diketone and its saturated analogue. Supramol Chem 1994. [DOI: 10.1080/10610279408029849] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rojas MT, Medina JC, Gokel GW, Kaifer AE. The first quantitative detection of silver ion at micromolar levels in water using a redox-switchable ligand. Supramol Chem 1993. [DOI: 10.1080/10610279308027500] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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New Developments in “Switched-On” Crown Ethers. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/b978-0-444-88191-5.50013-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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36
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Transition Metal and Organic Redox-Active Macrocycles Designed to Electrochemically Recognize Charged and Neutral Guest Species. ADVANCES IN INORGANIC CHEMISTRY 1992. [DOI: 10.1016/s0898-8838(08)60259-7] [Citation(s) in RCA: 178] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Hashimoto K, Togo H, Morihashi K, Yokoyama Y, Kikuchi O. Conformational Change of Benzoquinone Crown Ether Radical Anions Induced by Complexation with Alkali Metal Cation: An ESR Study. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1991. [DOI: 10.1246/bcsj.64.3245] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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38
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{gh6-Phenylmethylsila-14-crown-5}chromium tricarbonyl. Synthesis, characterization and electrochemical studies on the first example of an electroactive ionophore containing a silacrown. Inorganica Chim Acta 1991. [DOI: 10.1016/s0020-1693(00)81673-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Echegoyen L, Decian A, Fischer J, Lehn JM. Cryptatium: eine Verbindung vom Typ „Expandiertes Atom”/Radikalionenpaar, erhalten durch elektroreduktive Kristallisation von Natrium-tris(bipyridyl)cryptat. Angew Chem Int Ed Engl 1991. [DOI: 10.1002/ange.19911030740] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Electrochemical switching in reducible lariat ethers: From cation binding enhancements to electrochemically-mediated transport. ACTA ACUST UNITED AC 1989. [DOI: 10.1007/bf01060726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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42
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Synthetic and electrochemical studies on electroactive ionophores based on the di-η-cyclopentadienyl-molybendum and -tungsten fragments. J Organomet Chem 1988. [DOI: 10.1016/0022-328x(88)89023-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bajaj AV, Poonia NS. Comprehensive coordination chemistry of alkali and alkaline earth cations with macrocyclic multidentates: latest position. Coord Chem Rev 1988. [DOI: 10.1016/0010-8545(88)80008-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Löhr HG, Vögtle F. Chromoionophore, VII. Podanden mit Elektronen-Donor- und -Acceptor-Endgruppen und kationgesteuerter Charge-Transfer-Absorption. ACTA ACUST UNITED AC 1985. [DOI: 10.1002/cber.19851180309] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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Beadle JR, Dishong DM, Khanna RK, Gokel GW. Syntheses and properties of arenediazonium and anilinium cation lariat ether complexes: an “ostrich molecule” complex and evidence for intramolecular sidearm - macroring interaction. Tetrahedron 1984. [DOI: 10.1016/0040-4020(84)85070-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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