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Mohammed FA, Xiao T, Wang L, Elmes RBP. Macrocyclic receptors for anion recognition. Chem Commun (Camb) 2024. [PMID: 39323234 DOI: 10.1039/d4cc04521a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Macrocyclic receptors have emerged as versatile and efficient molecular tools for the recognition and sensing of anions, playing a pivotal role in molecular recognition and supramolecular chemistry. The following review provides an overview of the recent advances in the design, synthesis, and applications of macrocyclic receptors specifically tailored for anion recognition. The unique structural features of macrocycles, such as their well-defined structures and pre-organised binding sites, contribute to their exceptional anion-binding capabilities that have led to their application across a broad range of the chemical and biological sciences.
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Affiliation(s)
- Farhad Ali Mohammed
- Department of Chemistry, Maynooth University, National University of Ireland, Maynooth, Co, Kildare, Ireland.
- SSPC - the Science Foundation Ireland Research Centre for Pharmaceuticals, University of Limerick, V94 T9PX Limerick, Ireland
| | - Tangxin Xiao
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Leyong Wang
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Robert B P Elmes
- Department of Chemistry, Maynooth University, National University of Ireland, Maynooth, Co, Kildare, Ireland.
- SSPC - the Science Foundation Ireland Research Centre for Pharmaceuticals, University of Limerick, V94 T9PX Limerick, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth University, National University of Ireland, Co. Kildare, W23 F2H6 Maynooth, Ireland
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2
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Jurek P, Szymański MP, Szumna A. Remote control of anion binding by CH-based receptors. Chem Commun (Camb) 2024; 60:3417-3420. [PMID: 38441137 DOI: 10.1039/d3cc06038a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
We show that the substitution of tetra(benzimidazole)resorcin[4]arenes with electron withdrawing groups on the upper rim enhances anion binding at the opposite edge by more than three orders of magnitude. Moreover, selective anion binding at either the OH/NH or CH binding sites is demonstrated.
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Affiliation(s)
- Paulina Jurek
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Marek P Szymański
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Agnieszka Szumna
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
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3
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Stares DL, Szumna A, Schalley CA. Encapsulation in Charged Droplets Generates Distorted Host-Guest Complexes. Chemistry 2023; 29:e202302112. [PMID: 37724745 DOI: 10.1002/chem.202302112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 09/21/2023]
Abstract
The ability of various hydrogen-bonded resorcinarene-based capsules to bind α,ω-alkylbisDABCOnium (DnD) guests of different lengths was investigated in solution and in the gas-phase. While no host-guest interactions were detected in solution, encapsulation could be achieved in the charged droplets formed during electrospray ionisation (ESI). This included guests, which are far too long in their most stable conformation to fit inside the cavity of the capsules. A combination of three mass spectrometric techniques, namely, collision-induced dissociation, hydrogen/deuterium exchange, and ion-mobility mass spectrometry, together with computational modelling allow us to determine the binding mode of the DnD guests inside the cavity of the capsules. Significant distortions of the guest into horseshoe-like arrangements are required to optimise cation-π interactions with the host, which also adopt distorted geometries with partially open hydrogen-bonding seams when binding longer guests. Such quasi "spring-loaded" capsules can form in the charged droplets during the ESI process as there is no competition between guest encapsulation and ion pair formation with the counterions that preclude encapsulation in solution. The encapsulation complexes are sufficiently stable in the gas-phase - even when strained - because non-covalent interactions significantly strengthen in the absence of solvent.
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Affiliation(s)
- Daniel L Stares
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195, Berlin, Germany
| | - Agnieszka Szumna
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw, Poland
| | - Christoph A Schalley
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195, Berlin, Germany
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4
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Wang ZC, Tan YZ, Tang LL, Zeng F. Binaphthyl-Based Chiral Macrocyclic Hosts for the Selective Recognition of Iodide Anions. Molecules 2023; 28:4784. [PMID: 37375339 DOI: 10.3390/molecules28124784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/08/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
In this study, we explorethe synthesis of binaphthyl-based chiral macrocyclic hosts for the first time. They exhibited the selective recognition abilities of iodide anions which can be favored over those of other anions (AcO-, NO3-, ClO4-, HSO4-, Br-, PF6-, H2PO4-, BF4-, and CO3F3S-), as confirmed by UV-vis, HRMS, and 1H NMR spectroscopy experiments, as well as DFT calculations. Neutral aryl C-H···anion interactions play an important role in the formation complexes. The recognition process can be observed by the naked eye.
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Affiliation(s)
- Zong-Cheng Wang
- Department of Biology and Chemistry, Hunan Universityof Science and Engineering, Yongzhou 415199, China
| | - Ying-Zi Tan
- Department of Biology and Chemistry, Hunan Universityof Science and Engineering, Yongzhou 415199, China
| | - Lin-Li Tang
- Department of Biology and Chemistry, Hunan Universityof Science and Engineering, Yongzhou 415199, China
| | - Fei Zeng
- Department of Biology and Chemistry, Hunan Universityof Science and Engineering, Yongzhou 415199, China
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5
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Fan D, Du J, Dang J, Wang C, Mo Y. The strength and selectivity of perfluorinated nano-hoops and buckybowls for anion binding and the nature of anion-π interactions. J Comput Chem 2023; 44:138-148. [PMID: 35147229 DOI: 10.1002/jcc.26820] [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: 11/12/2021] [Revised: 01/17/2022] [Accepted: 01/21/2022] [Indexed: 12/31/2022]
Abstract
Perfluorinated cycloparaphenylenes (F-[n]CPP, n = 5-8), boron nitride nanohoop (F-[5]BNNH), and buckybowls (F-BBs) were proposed as anion receptors via anion-π interactions with halide anions (Cl- , Br- and I- ), and remarkable binding strengths up to -294.8 kJ/mol were computationally verified. The energy decomposition approach based on the block-localized wavefunction method, which combines the computational efficiency of molecular orbital theory and the chemical intuition of ab initio valence bond theory, was applied to the above anion-π complexes, in order to elucidate the nature and selectivity of these interactions. The overall attraction is mainly governed by the frozen energy component, in which the electrostatic interaction is included. Remarkable binding strengths with F-[n]CPPs can be attributed to the accumulated anion-π interactions between the anion and each conjugated ring on the hoop, while for F-BBs, additional stability results from the curved frameworks, which distribute electron densities unequally on π-faces. Interestingly, the strongest host was proved to be the F-[5]BNNH, which exhibits the most significant anisotropy of the electrostatic potential surface due to the difference in the electronegativities of nitrogen and boron. The selectivity of each host for anions was explored and the importance of the often-overlooked Pauli exchange repulsion was illustrated. Chloride anion turns out to be the most favorable anion for all receptors, due to the smallest ionic radius and the weakest destabilizing Pauli exchange repulsion.
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Affiliation(s)
- Dan Fan
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Juan Du
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Jingshuang Dang
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Changwei Wang
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Yirong Mo
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina, USA
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6
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Van Craen D, Kalarikkal MG, Holstein JJ. A Charge-Neutral Self-Assembled L 2Zn 2 Helicate as Bench-Stable Receptor for Anion Recognition at Nanomolar Concentration. J Am Chem Soc 2022; 144:18135-18143. [PMID: 36137546 DOI: 10.1021/jacs.2c08579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The field of anion recognition chemistry is dominated by two fundamental approaches to design receptors. One relies on the formation of covalent bonds resulting in organic and often neutral host species, while the other one utilizes metal-driven self-assembly for the formation of charged receptors with well-defined nanocavities. Yet, the combination of their individual advantages in the form of charge-neutral metal-assembled bench-stable anion receptors is severely lacking. Herein, we present a fluorescent and uncharged double-stranded hydroxyquinoline-based zinc(II) helicate with the ability to bind environmentally relevant dicarboxylate anions with high fidelity in dimethyl sulfoxide (DMSO) at nanomolar concentrations. These dianions are pinned between zinc(II) centers with binding constants up to 145 000 000 M-1. The presented investigation exemplifies a pathway to bridge the two design approaches and combine their strength in one structural motif as an efficient anion receptor.
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Affiliation(s)
- David Van Craen
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Str. 6, 44227 Dortmund, Germany
| | - Malavika G Kalarikkal
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Str. 6, 44227 Dortmund, Germany
| | - Julian J Holstein
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Str. 6, 44227 Dortmund, Germany
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7
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Kaupp M, Schattenberg CJ, Müller R, Reimann M. Unusually Large Effects of Charge-assisted C-H⋅⋅⋅F Hydrogen Bonds to Anionic Fluorine in Organic Solvents: Computational Study of 19 F NMR Shifts versus Thermochemistry. Chemistry 2022; 11:e202200146. [PMID: 35984672 PMCID: PMC9716039 DOI: 10.1002/open.202200146] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/26/2022] [Indexed: 01/31/2023]
Abstract
A comparison of computed 19 F NMR chemical shifts and experiment provides evidence for large specific solvent effects for fluoride-type anions interacting with the σ*(C-H) orbitals in organic solvents like MeCN or CH2 Cl2 . We show this for systems ranging from the fluoride ion and the bifluoride ion [FHF]- to polyhalogen anions [ClFx ]- . Discrepancies between computed and experimental shifts when using continuum solvent models like COSMO or force-field-based descriptions like the 3D-RISM-SCF model show specific orbital interactions that require a quantum-mechanical treatment of the solvent molecules. This is confirmed by orbital analyses of the shielding constants, while less negatively charged fluorine atoms (e. g., in [EF4 ]- ) do not require such quantum-mechanical treatments to achieve reasonable accuracy. The larger 19 F solvent shift of fluoride in MeCN compared to water is due to the larger coordination number in the former. These observations are due to unusually strong charge-assisted C-H⋅⋅⋅F- hydrogen bonds, which manifest beyond some threshold negative natural charge on fluorine of ca. < -0.6 e. The interactions are accompanied by sizable free energies of solvation, in the order F- ≫[FHF]- >[ClF2 ]- >[ClF4 ]- . COSMO-RS solvation free energies tend to moderately underestimate those from the micro-solvated cluster treatment. Red-shifted and intense vibrational C-H stretching bands, potentially accessible in bulk solution, are further spectroscopic finger prints.
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Affiliation(s)
- Martin Kaupp
- Technische Universität BerlinInstitut für Chemie, Theoretische Chemie/QuantenchemieSekr. C7, Strasse des 17. Juni 13510623BerlinGermany
| | - Caspar J. Schattenberg
- Technische Universität BerlinInstitut für Chemie, Theoretische Chemie/QuantenchemieSekr. C7, Strasse des 17. Juni 13510623BerlinGermany
| | - Robert Müller
- Technische Universität BerlinInstitut für Chemie, Theoretische Chemie/QuantenchemieSekr. C7, Strasse des 17. Juni 13510623BerlinGermany
| | - Marc Reimann
- Technische Universität BerlinInstitut für Chemie, Theoretische Chemie/QuantenchemieSekr. C7, Strasse des 17. Juni 13510623BerlinGermany
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8
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Yanshyna O, Avram L, Shimon LJW, Klajn R. Coexistence of 1 : 1 and 2 : 1 inclusion complexes of indigo carmine. Chem Commun (Camb) 2022; 58:3461-3464. [PMID: 35064258 PMCID: PMC8908503 DOI: 10.1039/d1cc07081a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We show that the optical properties of indigo carmine can be modulated by encapsulation within a coordination cage. Depending on the host/guest molar ratio, the cage can predominantly encapsulate either one or two dye molecules. The 1 : 1 complex is fluorescent, unique for an indigo dye in an aqueous solution. We have also found that binding two dye molecules stabilizes a previously unknown conformation of the cage. We show that the optical properties of indigo carmine can be modulated by encapsulation within a coordination cage.![]()
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Affiliation(s)
- Oksana Yanshyna
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
| | - Liat Avram
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Linda J W Shimon
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
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9
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Mirzaei S, Espinoza Castro VM, Hernández Sánchez R. Nonspherical anion sequestration by C-H hydrogen bonding. Chem Sci 2022; 13:2026-2032. [PMID: 35308854 PMCID: PMC8849022 DOI: 10.1039/d1sc07041j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 01/22/2022] [Indexed: 12/05/2022] Open
Abstract
Macrocyclic arenes laid the foundations of supramolecular chemistry and their study established the fundamentals of noncovalent interactions. Advancing their frontier, here we designed rigidified resorcin[4]arenes that serve as hosts for large nonspherical anions. In one synthetic step, we vary the host's anion affinity properties by more than seven orders of magnitude. This is possible by engineering electropositive aromatic C–H bond donors in an idealized square planar geometry embedded within the host's inner cavity. The hydrogen atom's electropositivity is tuned by introducing fluorine atoms as electron withdrawing groups. These novel macrocycles, termed fluorocages, are engineered to sequester large anions. Indeed, experimental data shows an increase in the anion association constant (Ka) as the number of F atoms increase. The observed trend is rationalized by DFT calculations of Hirshfeld Charges (HCs). Most importantly, fluorocages in solution showed weak-to-medium binding affinity for large anions like [PF6]− (102< Ka <104 M−1), and high affinity for [MeSO3]− (Ka >106). Fluorocages: new class of rigidified host utilizing nontraditional C–H hydrogen bonds to capture the nonspherical anions.![]()
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Affiliation(s)
- Saber Mirzaei
- Department of Chemistry, University of Pittsburgh 219 Parkman Ave. Pittsburgh Pennsylvania 15260 USA
| | - Victor M Espinoza Castro
- Department of Chemistry, University of Pittsburgh 219 Parkman Ave. Pittsburgh Pennsylvania 15260 USA
| | - Raúl Hernández Sánchez
- Department of Chemistry, University of Pittsburgh 219 Parkman Ave. Pittsburgh Pennsylvania 15260 USA
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10
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Gharehkhani A, Ghorbani-Vaghei R, Alavinia S. Synthesis of calixresorcarenes using magnetic poly triazine-benzene sulfonamide-SO 3H. RSC Adv 2021; 11:37514-37527. [PMID: 35496418 PMCID: PMC9043749 DOI: 10.1039/d1ra07393a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/15/2021] [Indexed: 01/18/2023] Open
Abstract
The purpose of this work is to develop a magnetically recyclable immobilized base catalyst for the green synthesis of calixresorcarenes. To achieve this, poly triazine-benzene sulfonamide (PTBSA) has been coated on magnetic Fe3O4 nanoparticles and subsequently chlorosulfonic acid has been supported to obtain Fe3O4@PTBSA-SO3H. The structure of nano-Fe3O4@PTBSA-SO3H was characterized by TEM, XRD, FT-IR, VSM, WDX, EDX, TGA/DSC and FE-SEM. The catalytic efficiency of this catalyst was also investigated in the synthesis of novel calixresorcarene derivatives. The advantages of heterogeneous nature, catalytic activity and the recyclability of the polymer support were also strengthened by advanced surface treatment. These key factors (basic sites, acidic sites and heterogeneity) play essential roles in the catalyst performance. This procedure has some advantages such as short reaction time, clean and fast work-up and easy separation of the catalyst by an external magnet. Magnetic poly triazine-benzene sulfonamide-SO3H was investigated for the synthesis of calixresorcarenes.![]()
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Affiliation(s)
- Alireza Gharehkhani
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University Zip Code 65174 Hamedan Iran +98 81 38380647
| | - Ramin Ghorbani-Vaghei
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University Zip Code 65174 Hamedan Iran +98 81 38380647
| | - Sedigheh Alavinia
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University Zip Code 65174 Hamedan Iran +98 81 38380647
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11
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Orenha RP, Cintra CH, Natal MLL, Colaço MC, Caramori GF, Piotrowski MJ, Parreira RLT. Design of supramolecular systems capable of recognizing anions uniquely by aliphatic C–H⋯anion hydrogen bonds: theoretical insights. NEW J CHEM 2021. [DOI: 10.1039/d1nj03320d] [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
Anions play important roles in the environment. The anionic recognition through –CH polarized groups has been elucidated from DFT calculations.
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Affiliation(s)
- Renato Pereira Orenha
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Claudia Haber Cintra
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Maria Laura Lucas Natal
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Matheus Cachoeira Colaço
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Universitário Trindade, CP 476, Florianópolis, SC, 88040-900, Brazil
| | - Giovanni Finoto Caramori
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Universitário Trindade, CP 476, Florianópolis, SC, 88040-900, Brazil
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12
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Recent advances in mass spectrometry studies of non-covalent complexes of macrocycles - A review. Anal Chim Acta 2019; 1081:32-50. [DOI: 10.1016/j.aca.2019.06.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 12/29/2022]
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13
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Götz S, Schneider A, Lützen A. Efficient resolution of racemic crown-shaped cyclotriveratrylene derivatives and isolation and characterization of the intermediate saddle isomer. Beilstein J Org Chem 2019; 15:1339-1346. [PMID: 31293683 PMCID: PMC6604736 DOI: 10.3762/bjoc.15.133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/06/2019] [Indexed: 11/23/2022] Open
Abstract
The preparative resolution of a trifunctionalized C3-symmetrical chiral cyclotriveratrylene derivative was achieved via high-performance liquid chromatography (HPLC) on a chiral stationary phase. This approach is a promising alternative to the previously reported resolution through formation of diastereomeric esters because it involves fewer synthetic steps and is less prone to thermal (re)racemization. During these studies an intermediate saddle conformer could also be isolated and characterized by 1H and 13C NMR spectroscopy. The HPLC separation method was further developed in order to allow investigations on the racemization behavior of the cyclotriveratrylene derivative.
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Affiliation(s)
- Sven Götz
- Kekulé-Institute of Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Str. 1, D-53121 Bonn, Germany
| | - Andreas Schneider
- Kekulé-Institute of Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Str. 1, D-53121 Bonn, Germany
| | - Arne Lützen
- Kekulé-Institute of Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Str. 1, D-53121 Bonn, Germany
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14
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15
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Warzok U, Marianski M, Hoffmann W, Turunen L, Rissanen K, Pagel K, Schalley CA. Surprising solvent-induced structural rearrangements in large [N···I +···N] halogen-bonded supramolecular capsules: an ion mobility-mass spectrometry study. Chem Sci 2018; 9:8343-8351. [PMID: 30542581 PMCID: PMC6243472 DOI: 10.1039/c8sc03040e] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 09/05/2018] [Indexed: 12/28/2022] Open
Abstract
Coordinative halogen bonds have recently gained interest for the assembly of supramolecular capsules. Ion mobility-mass spectrometry and theoretical calculations now reveal the well-defined gas-phase structures of dimeric and hexameric [N···I+···N] halogen-bonded capsules with counterions located inside their cavities as guests. The solution reactivity of the large hexameric capsule shows the intriguing solvent-dependent equilibrium between the hexamer and an unprecedented pentameric [N···I+···N] halogen-bonded capsule, when the solvent is changed from chloroform to dichloromethane. The intrinsic flexibility of the cavitands enables this novel structure to adopt a pseudo-trigonal bipyramidal geometry with nine [N···I+···N] bonds along the edges and two pyridine binding sites uncomplexed.
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Affiliation(s)
- Ulrike Warzok
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany .
| | - Mateusz Marianski
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6 , 14195 Berlin , Germany
| | - Waldemar Hoffmann
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany .
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6 , 14195 Berlin , Germany
| | - Lotta Turunen
- Department of Chemistry , NanoScience Center , University of Jyväskylä , P. O. Box 35 , 40014 Jyväskylä , Finland
| | - Kari Rissanen
- Department of Chemistry , NanoScience Center , University of Jyväskylä , P. O. Box 35 , 40014 Jyväskylä , Finland
| | - Kevin Pagel
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany .
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6 , 14195 Berlin , Germany
| | - Christoph A Schalley
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany .
- School of Life Sciences , Northwestern Polytechnical University , 127 Youyi Xilu , Xi'an , Shaanxi 710072 , P. R. China
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16
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Gregolińska H, Majewski M, Chmielewski PJ, Gregoliński J, Chien A, Zhou J, Wu YL, Bae YJ, Wasielewski MR, Zimmerman PM, Stępień M. Fully Conjugated [4]Chrysaorene. Redox-Coupled Anion Binding in a Tetraradicaloid Macrocycle. J Am Chem Soc 2018; 140:14474-14480. [PMID: 30289699 DOI: 10.1021/jacs.8b09385] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[4]Chrysaorene, a fully conjugated carbocyclic coronoid, is shown to be a low-bandgap π-conjugated system with a distinct open-shell character. The system shows good chemical stability and can be oxidized to well-defined radical cation and dication states. The cavity of [4]chrysaorene acts as an anion receptor toward halide ions with a particular selectivity toward iodides ( Ka = 207 ± 6 M-1). The interplay between anion binding and redox chemistry is demonstrated using a 1H NMR analysis in solution. In particular, a well-resolved, paramagnetically shifted spectrum of the [4]chrysaorene radical cation is observed, providing evidence for the inner binding of the iodide. The radical cation-iodide adduct can be generated in thin solid films of [4] chrysaorene by simple exposure to diiodine vapor.
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Affiliation(s)
- Hanna Gregolińska
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14 , 50-383 Wrocław , Poland
| | - Marcin Majewski
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14 , 50-383 Wrocław , Poland
| | - Piotr J Chmielewski
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14 , 50-383 Wrocław , Poland
| | - Janusz Gregoliński
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14 , 50-383 Wrocław , Poland
| | - Alan Chien
- Department of Chemistry , University of Michigan , 930 North University Avenue , Ann Arbor , Michigan 48109 , United States
| | - Jiawang Zhou
- Department of Chemistry and Institute for Sustainability and Energy at Northwestern , Northwestern University , Evanston , Illinois 60208-3113 , United States
| | - Yi-Lin Wu
- Department of Chemistry and Institute for Sustainability and Energy at Northwestern , Northwestern University , Evanston , Illinois 60208-3113 , United States
| | - Youn Jue Bae
- Department of Chemistry and Institute for Sustainability and Energy at Northwestern , Northwestern University , Evanston , Illinois 60208-3113 , United States
| | - Michael R Wasielewski
- Department of Chemistry and Institute for Sustainability and Energy at Northwestern , Northwestern University , Evanston , Illinois 60208-3113 , United States
| | - Paul M Zimmerman
- Department of Chemistry , University of Michigan , 930 North University Avenue , Ann Arbor , Michigan 48109 , United States
| | - Marcin Stępień
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14 , 50-383 Wrocław , Poland
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17
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Soumya KR, Arumugam R, Shankar B, Sathiyendiran M. Sulfate Donor Based Dinuclear Heteroleptic Triple-Stranded Helicates from Sulfite and Ditopic Nitrogen Donor Ligands and Their Transformation to Dinuclear Homoleptic Double-Stranded Mesocates. Inorg Chem 2018; 57:10718-10725. [PMID: 30106570 DOI: 10.1021/acs.inorgchem.8b01343] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sulfate donor based supramolecular coordination complexes [{ fac-Re(CO)3}(μ-SO4)(L n)2{ fac-Re(CO)3}] (1-3) were obtained using ditopic N donors (L n; n = 1-3), NaHSO3, and Re2(CO)10 in a one-pot, multicomponent, coordination-driven self-assembly approach, in which SO32- becomes oxidized to SO42- during the reaction and acts as a building framework. Complexes 1-3 were characterized using IR, ESI-TOF-MS, and 1H NMR spectroscopy. The structures of complexes 1-3 were confirmed using single-crystal X-ray diffraction analysis. The transformation of the dinuclear heteroleptic triple-stranded helicate to the dinuclear homoleptic double-stranded mesocate [{Re(CO)3Cl}2(L n)2] (L n = L1, L2, L3; 4a-6a) was achieved by the addition of BaCl2. The direct treatment of Re(CO)5X (X = Cl, Br) with L1/L2/L3 yielded the dinuclear homoleptic double-stranded helicates [{Re(CO)3X}2 (L n)2] (4b-6b and 7-9).
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Affiliation(s)
- K R Soumya
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Ramar Arumugam
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Bhaskaran Shankar
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
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18
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Ma TT, Tong J, Sun WQ, Ma HW, Yu SY. Self-assembly of a Pd-based molecular bowl as anion receptor featured by multiple C H···anion hydrogen bonds. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.01.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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19
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Panja SK, Srivastava N, Srivastava J, Prasad NE, Noothalapati H, Shigeto S, Saha S. Evidence of C--F-P and aromatic π--F-P weak interactions in imidazolium ionic liquids and its consequences. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 194:117-125. [PMID: 29331812 DOI: 10.1016/j.saa.2017.12.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/28/2017] [Accepted: 12/14/2017] [Indexed: 06/07/2023]
Abstract
A simple change from alkyl group to alkene in side chain of imidazolium cation with same anion resulted in a drastic impact on physical properties (e.g., melting point) from bmimPF6 IL to cmimPF6 IL. The underlying reasons have been elucidated by structural and interaction studies with the help of DSC, SCXRD, vibrational and multi-nuclear NMR spectroscopic techniques. Experiments reveal existence of new weak interactions involving the carbon and π cloud of the imidazolium aromatic ring with fluoride of PF6 anion (i.e., C2--F-P and π--F-P) in cmimPF6 but are absent in structurally similar prototype IL, bmimPF6. Though weak, these interactions helped to form ladder type supramolecular arrangement, resulting in quite high melting point for cmimPF6 IL compared to bmimPF6 IL. These findings emphasize that an IL system can behave uniquely because of the existence of uncommon weak interactions.
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Affiliation(s)
- Sumit Kumar Panja
- Department of Chemistry, Centre for Advanced Studies, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Nitin Srivastava
- Department of Chemistry, Centre for Advanced Studies, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Jyoti Srivastava
- Defence Materials and Stores Research and Development Establishment (DMSRDE), Kanpur, Uttar Pradesh, India
| | - Namburi Eswara Prasad
- Defence Materials and Stores Research and Development Establishment (DMSRDE), Kanpur, Uttar Pradesh, India
| | - Hemanth Noothalapati
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Shinsuke Shigeto
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Satyen Saha
- Department of Chemistry, Centre for Advanced Studies, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
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20
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Affiliation(s)
- Dae Hyup Sohn
- Department of Chemistry, Sejong University , Seoul, South Korea
| | - Eunbi Han
- Department of Chemistry, Sejong University , Seoul, South Korea
| | - Jong Il Park
- Department of Bio-nanomaterials, Bio Campus of Korea Polytechnics , Nonsan, South Korea
| | - Seung Joo Cho
- Department of Cellular and Molecular Medicine, College of Medicine, Chosun University , Gwangju, South Korea
| | - Jongmin Kang
- Department of Chemistry, Sejong University , Seoul, South Korea
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21
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Kiesilä A, Kivijärvi L, Beyeh NK, Moilanen JO, Groessl M, Rothe T, Götz S, Topić F, Rissanen K, Lützen A, Kalenius E. Simultane endo
- und exo
-Komplexbildung von Pyridin[4]aren-Dimeren mit neutralen und anionischen Gästen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anniina Kiesilä
- University of Jyväskylä; Department of Chemistry; Nanoscience Center; P.O. Box 35 40014 Jyväskylä Finnland
| | - Lauri Kivijärvi
- University of Jyväskylä; Department of Chemistry; Nanoscience Center; P.O. Box 35 40014 Jyväskylä Finnland
| | - Ngong Kodiah Beyeh
- Aalto University; School of Science; Department of Applied Physics; Puumiehenkuja 2 02150 Espoo Finnland
| | - Jani O. Moilanen
- University of Jyväskylä; Department of Chemistry; Nanoscience Center; P.O. Box 35 40014 Jyväskylä Finnland
| | | | - Tatiana Rothe
- Universität Bonn; Kekulé-Institut für Organische Chemie und Biochemie; Gerhard-Domagk-Str. 1 53121 Bonn Deutschland
| | - Sven Götz
- Universität Bonn; Kekulé-Institut für Organische Chemie und Biochemie; Gerhard-Domagk-Str. 1 53121 Bonn Deutschland
| | - Filip Topić
- University of Jyväskylä; Department of Chemistry; Nanoscience Center; P.O. Box 35 40014 Jyväskylä Finnland
| | - Kari Rissanen
- University of Jyväskylä; Department of Chemistry; Nanoscience Center; P.O. Box 35 40014 Jyväskylä Finnland
| | - Arne Lützen
- Universität Bonn; Kekulé-Institut für Organische Chemie und Biochemie; Gerhard-Domagk-Str. 1 53121 Bonn Deutschland
| | - Elina Kalenius
- University of Jyväskylä; Department of Chemistry; Nanoscience Center; P.O. Box 35 40014 Jyväskylä Finnland
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22
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Kiesilä A, Kivijärvi L, Beyeh NK, Moilanen JO, Groessl M, Rothe T, Götz S, Topić F, Rissanen K, Lützen A, Kalenius E. Simultaneous endo and exo Complex Formation of Pyridine[4]arene Dimers with Neutral and Anionic Guests. Angew Chem Int Ed Engl 2017; 56:10942-10946. [PMID: 28665506 DOI: 10.1002/anie.201704054] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/01/2017] [Indexed: 11/06/2022]
Abstract
The formation of complexes between hexafluorophosphate (PF6- ) and tetraisobutyloctahydroxypyridine[4]arene has been thoroughly studied in the gas phase (ESI-QTOF-MS, IM-MS, DFT calculations), in the solid state (X-ray crystallography), and in chloroform solution (1 H, 19 F, and DOSY NMR spectroscopy). In all states of matter, simultaneous endo complexation of solvent molecules and exo complexation of a PF6- anion within a pyridine[4]arene dimer was observed. While similar ternary complexes are often observed in the solid state, this is a unique example of such behavior in the gas phase.
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Affiliation(s)
- Anniina Kiesilä
- University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Lauri Kivijärvi
- University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Ngong Kodiah Beyeh
- Aalto University, School of Science, Department of Applied Physics, Puumiehenkuja 2, 02150, Espoo, Finland
| | - Jani O Moilanen
- University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014, Jyväskylä, Finland
| | | | - Tatiana Rothe
- University of Bonn, Kekulé-Institute of Organic Chemistry and Biochemistry, Gerhard-Domagk-Strasse 1, 53121, Bonn, Germany
| | - Sven Götz
- University of Bonn, Kekulé-Institute of Organic Chemistry and Biochemistry, Gerhard-Domagk-Strasse 1, 53121, Bonn, Germany
| | - Filip Topić
- University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Kari Rissanen
- University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Arne Lützen
- University of Bonn, Kekulé-Institute of Organic Chemistry and Biochemistry, Gerhard-Domagk-Strasse 1, 53121, Bonn, Germany
| | - Elina Kalenius
- University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014, Jyväskylä, Finland
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23
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Grunenberg J. The Weakness of B−H⋅⋅⋅π Interactions: Much Softer than a Hydrogen Bond. Chemistry 2016; 22:18678-18681. [DOI: 10.1002/chem.201603535] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Indexed: 11/11/2022]
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24
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Majewski MA, Hong Y, Lis T, Gregoliński J, Chmielewski PJ, Cybińska J, Kim D, Stępień M. Octulene: A Hyperbolic Molecular Belt that Binds Chloride Anions. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608384] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Marcin A. Majewski
- Wydział Chemii; Uniwersytet Wrocławski; ul. F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Yongseok Hong
- Department of Chemistry; Yonsei University; 50 Yonsei-ro Seoul 120-749 Korea
| | - Tadeusz Lis
- Wydział Chemii; Uniwersytet Wrocławski; ul. F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Janusz Gregoliński
- Wydział Chemii; Uniwersytet Wrocławski; ul. F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Piotr J. Chmielewski
- Wydział Chemii; Uniwersytet Wrocławski; ul. F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Joanna Cybińska
- Wydział Chemii; Uniwersytet Wrocławski; ul. F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Dongho Kim
- Department of Chemistry; Yonsei University; 50 Yonsei-ro Seoul 120-749 Korea
| | - Marcin Stępień
- Wydział Chemii; Uniwersytet Wrocławski; ul. F. Joliot-Curie 14 50-383 Wrocław Poland
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25
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Majewski MA, Hong Y, Lis T, Gregoliński J, Chmielewski PJ, Cybińska J, Kim D, Stępień M. Octulene: A Hyperbolic Molecular Belt that Binds Chloride Anions. Angew Chem Int Ed Engl 2016; 55:14072-14076. [PMID: 27709735 DOI: 10.1002/anie.201608384] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Indexed: 12/14/2022]
Abstract
Octulene, the higher homologue of kekulene and septulene, was synthesized using the fold-in method. This new hydrocarbon macrocycle contains a large 24-membered inner circuit, which is peripherally fused to 24 benzene rings. Such an arrangement produces considerable hyperbolic distortion of the π-conjugated surface. The consequences of distortion in octulene were explored using photophysical methods, which revealed a reduced electronic band gap and greater flexibility of the π system. Octulene contains a functional cavity with a diameter larger than 5.5 Å that is capable of efficiently binding the chloride anion in a nonpolar solvent (Ka = 2.2(4)×104 m-1 , 1 % dichloromethane (DCM) in benzene). The octulene-chloride interaction is stabilized by eight weak C(sp2 )H⋅⋅⋅Cl bonds, providing the first example of a hydrocarbon-based anion receptor.
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Affiliation(s)
- Marcin A Majewski
- Wydział Chemii, Uniwersytet Wrocławski, ul. F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Yongseok Hong
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seoul, 120-749, Korea
| | - Tadeusz Lis
- Wydział Chemii, Uniwersytet Wrocławski, ul. F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Janusz Gregoliński
- Wydział Chemii, Uniwersytet Wrocławski, ul. F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Piotr J Chmielewski
- Wydział Chemii, Uniwersytet Wrocławski, ul. F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Joanna Cybińska
- Wydział Chemii, Uniwersytet Wrocławski, ul. F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Dongho Kim
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seoul, 120-749, Korea.
| | - Marcin Stępień
- Wydział Chemii, Uniwersytet Wrocławski, ul. F. Joliot-Curie 14, 50-383, Wrocław, Poland.
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26
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Halides with Fifteen Aliphatic C-H···Anion Interaction Sites. Sci Rep 2016; 6:30123. [PMID: 27444513 PMCID: PMC4957075 DOI: 10.1038/srep30123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 06/27/2016] [Indexed: 11/25/2022] Open
Abstract
Since the aliphatic C–H···anion interaction is relatively weak, anion binding using hydrophobic aliphatic C–H (Cali–H) groups has generally been considered not possible without the presence of additional binding sites that contain stronger interactions to the anion. Herein, we report X-ray structures of organic crystals that feature a chloride anion bound exclusively by hydrophobic Cali–H groups. An X-ray structure of imidazolium-based scaffolds using Cali–H···A− interactions (A− = anion) shows that a halide anion is directly interacting with fifteen Cali–H groups (involving eleven hydrogen bonds, two bidentate hydrogen-bond-type binding interactions and two weakly hydrogen-bonding-like binding interactions). Additional supporting interactions and/or other binding sites are not observed. We note that such types of complexes may not be rare since such high numbers of binding sites for an anion are also found in analogous tetraalkylammonium complexes. The Cali–H···A− interactions are driven by the formation of a near-spherical dipole layer shell structure around the anion. The alternating layers of electrostatic charge around the anion arise because the repulsions between weakly positively charged H atoms are reduced by the presence of the weakly negatively charged C atoms connected to H atoms.
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Stefańska K, Jędrzejewska H, Wierzbicki M, Szumna A, Iwanek W. The Inverse Demand Oxa-Diels-Alder Reaction of Resorcinarenes: An Experimental and Theoretical Analysis of Regioselectivity and Diastereoselectivity. J Org Chem 2016; 81:6018-25. [PMID: 27336857 DOI: 10.1021/acs.joc.6b01099] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Diels-Alder reaction enables introduction of new functionalities onto the resorcinarene skeleton with simultaneous generation of new stereogenic centers and expansion of the internal cavity. We present highly regio- and diastereoselective inverse electron demand oxa-Diels-Alder reactions of resorcinarene ortho-quinone methide with benzofuran and indene, each generating 12 new stereogenic centers. The mechanism and reasons for regioselectivity and diastereoselectivity were analyzed using theoretical calculations (NBO charges, Fukui functions, transition state energies, and thermodynamic stability of the products). Enantiomers were separated, and their configurations were determined by comparison of experimental and theoretical electronic circular dichroism spectra.
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Affiliation(s)
- Karolina Stefańska
- Faculty of Mathematics and Natural Science, The Jan Kochanowski University in Kielce , Świętokrzyska 15, 25-406 Kielce, Poland
| | - Hanna Jędrzejewska
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Michał Wierzbicki
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Agnieszka Szumna
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Waldemar Iwanek
- Faculty of Mathematics and Natural Science, The Jan Kochanowski University in Kielce , Świętokrzyska 15, 25-406 Kielce, Poland
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Milić J, Zalibera M, Pochorovski I, Trapp N, Nomrowski J, Neshchadin D, Ruhlmann L, Boudon C, Wenger OS, Savitsky A, Lubitz W, Gescheidt G, Diederich F. Paramagnetic Molecular Grippers: The Elements of Six-State Redox Switches. J Phys Chem Lett 2016; 7:2470-2477. [PMID: 27300355 DOI: 10.1021/acs.jpclett.6b01094] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The development of semiquinone-based resorcin[4]arene cavitands expands the toolbox of switchable molecular grippers by introducing the first paramagnetic representatives. The semiquinone (SQ) states were generated electrochemically, chemically, and photochemically. We analyzed their electronic, conformational, and binding properties by cyclic voltammetry, ultraviolet/visible (UV/vis) spectroelectrochemistry, electron paramagnetic resonance (EPR) and transient absorption spectroscopy, in conjunction with density functional theory (DFT) calculations. The utility of UV/vis spectroelectrochemistry and EPR spectroscopy in evaluating the conformational features of resorcin[4]arene cavitands is demonstrated. Guest binding properties were found to be enhanced in the SQ state as compared to the quinone (Q) or the hydroquinone (HQ) states of the cavitands. Thus, these paramagnetic SQ intermediates open the way to six-state redox switches provided by two conformations (open and closed) in three redox states (Q, SQ, and HQ) possessing distinct binding ability. The switchable magnetic properties of these molecular grippers and their responsiveness to electrical stimuli has the potential for development of efficient molecular devices.
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Affiliation(s)
- Jovana Milić
- Laboratory of Organic Chemistry, ETH Zurich , Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
| | - Michal Zalibera
- Max Planck Institute for Chemical Energy Conversion , Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
- Institute of Physical Chemistry and Chemical Physics, Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology , Radlinského 9, 81237 Bratislava, Slovak Republic
| | - Igor Pochorovski
- Laboratory of Organic Chemistry, ETH Zurich , Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
| | - Nils Trapp
- Laboratory of Organic Chemistry, ETH Zurich , Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
| | - Julia Nomrowski
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Dmytro Neshchadin
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology , Stremayrgasse 9/Z2, 8010 Graz, Austria
| | - Laurent Ruhlmann
- Université de Strasbourg, Laboratoire d'Électrochimie et Chimie Physique du Corps Solide, Institut de Chimie de Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
| | - Corinne Boudon
- Université de Strasbourg, Laboratoire d'Électrochimie et Chimie Physique du Corps Solide, Institut de Chimie de Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
| | - Oliver S Wenger
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Anton Savitsky
- Max Planck Institute for Chemical Energy Conversion , Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Wolfgang Lubitz
- Max Planck Institute for Chemical Energy Conversion , Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Georg Gescheidt
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology , Stremayrgasse 9/Z2, 8010 Graz, Austria
| | - François Diederich
- Laboratory of Organic Chemistry, ETH Zurich , Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
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Sabater P, Zapata F, Caballero A, Fernández I, Ramirez de Arellano C, Molina P. 2,4,5-Trimethylimidazolium Scaffold for Anion Recognition Receptors Acting Through Charge-Assisted Aliphatic and Aromatic C–H Interactions. J Org Chem 2016; 81:3790-8. [DOI: 10.1021/acs.joc.6b00468] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Paula Sabater
- Departamento
de Química Orgánica, Universidad de Murcia, Campus de
Espinardo, 30100, Murcia, Spain
| | - Fabiola Zapata
- Departamento
de Química Orgánica, Universidad de Murcia, Campus de
Espinardo, 30100, Murcia, Spain
| | - Antonio Caballero
- Departamento
de Química Orgánica, Universidad de Murcia, Campus de
Espinardo, 30100, Murcia, Spain
| | - Israel Fernández
- Departamento
de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense, E-28040 Madrid, Spain
| | | | - Pedro Molina
- Departamento
de Química Orgánica, Universidad de Murcia, Campus de
Espinardo, 30100, Murcia, Spain
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Chavagnan T, Sémeril D, Matt D, Toupet L, Harrowfield J, Welter R. Cavitand Scission by Transition‐Metal Centres – Cleaved Cavitand Chirality and Its Consequences. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Thierry Chavagnan
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse, Institut de Chimie UMR 7177 CNRS, Université de Strasbourg, 67008 Strasbourg cedex, France, http://lcimc.u‐strasbg.fr
| | - David Sémeril
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse, Institut de Chimie UMR 7177 CNRS, Université de Strasbourg, 67008 Strasbourg cedex, France, http://lcimc.u‐strasbg.fr
| | - Dominique Matt
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse, Institut de Chimie UMR 7177 CNRS, Université de Strasbourg, 67008 Strasbourg cedex, France, http://lcimc.u‐strasbg.fr
| | - Loïc Toupet
- Institut de Physique de Rennes UMR 6251 CNRS, Université de Rennes 1, Campus de Beaulieu – Bâtiment 11 A, 35042 Rennes cedex, France
| | - Jack Harrowfield
- Institut de Science et Ingénierie Supramoléculaire (ISIS), UMR 7606 CNRS, Université de Strasbourg, 8 rue Gaspard Monge, 67083 Strasbourg cedex, France
| | - Richard Welter
- Institut de Biologie Moléculaire des Plantes, UPR 2387 CNRS, 12 rue du Gal Zimmer, 67084 Strasbourg cedex, France
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33
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Pandian TS, Srinivasadesikan V, Lin M, Kang J. Nitrite selective anion receptor based on 1-methyl-1H-perimidine. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.091] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Senthan SA, Alexander V. Synthesis, luminescence, and electrochemical studies of a new series of octanuclear ruthenium(II) complexes of tolylterpyridine appended calixresorcarenes. Dalton Trans 2015. [PMID: 26222317 DOI: 10.1039/c5dt02363g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of octanuclear Ru(ii) complexes of tolylterpyridine appended calixresorcarenes [{Ru(ttpy)}8()](PF6)16 (), [{Ru(ttpy)}8()](PF6)16 (), and [{Ru(ttpy)}8()](PF6)16 () [ = 2,8,14,20-tetraethyl-4,6,10,12,16,18,22,24-octa(4'-p-benzyloxy-(2,2':6',2''-terpyridinyl))calix[4]resorcarene; = 2,8,14,20-tetraphenyl-4,6,10,12,16,18,22,24-octa(4'-p-benzyloxy-(2,2':6',2''-terpyridinyl))calix[4]resorcarene; and = 2,8,14,20-tetra-p-tolyl-4,6,10,12,16,18,22,24-octa(4'-p-benzyloxy-(2,2':6',2''-terpyridinyl))calix[4]resorcarene] have been synthesized and characterized. The tetraethyl-, tetraphenyl-, and tetra-p-tolylcalixresorcarenes (), (), and (), respectively, are characterized by single crystal X-ray diffraction: () a = 13.5771(4) Å, b = 7.9566(3) Å, c = 18.3912(6) Å, α = γ = 90°, β = 103.146(2)°, V = 1934.69(11) Å(3), Z = 2, monoclinic, P2/n; () a = 11.9710(8) Å, b = 12.7057(9) Å, c = 13.8570(9) Å, α = 94.731(2)°, β = 108.558(2)°, γ = 106.657(2)°, V = 1878.9(2) Å(3), Z = 1, triclinic, P1[combining macron]; and () a = 26.076(3) Å, b = 20.056(2) Å, c = 16.0193(19) Å, α = γ = 90°, β = 116.056(3)°, V = 7526.3(14) Å(3), Z = 4, monoclinic, C2/c, respectively. The octanuclear complexes are nonluminescent at 298 K, but exhibit (3)MLCT luminescence at 654, 649, and 646 nm, respectively, at 77 K in acetonitrile. In the solid state at 298 K they exhibit (3)MLCT luminescence at 658, 658, and 665 nm, respectively. The complexes exhibit a monoexponential decay profile in acetonitrile and in the solid state at 298 K. The redox active hosts containing eight [Ru(ttpy)2](2+) moieties undergo quasireversible one-electron oxidation at 1.25, 1.26, and 1.25 V versus Ag/Ag(+), respectively, in acetonitrile. The study demonstrates the versatility of the octanucleating calixresorcarene based ligands , , and in forming octanuclear Ru(ii) complexes.
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Panja SK, Dwivedi N, Noothalapati H, Shigeto S, Sikder AK, Saha A, Sunkari SS, Saha S. Significance of weak interactions in imidazolium picrate ionic liquids: spectroscopic and theoretical studies for molecular level understanding. Phys Chem Chem Phys 2015; 17:18167-77. [PMID: 26102290 DOI: 10.1039/c5cp01944c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The effects of interionic hydrogen bonding and π-π stacking interactions on the physical properties of a new series of picrate anion based ionic liquids (ILs) have been investigated experimentally and theoretically. The existence of aromatic (C2-HO) and aliphatic (C7-HO-N22 and C6-HO-N20) hydrogen bonding and π-π stacking interactions in these ILs has been observed using various spectroscopic techniques. The aromatic and aliphatic C-HO hydrogen bonding interactions are found to have a crucial role in binding the imidazolium cation and picrate anion together. However, the π-π stacking interactions between two successive layers are found to play a decisive role in tight packing in ILs leading to differences in physical properties. The drastic difference in the melting points of the methyl and propyl derivatives (mmimPic and pmimPic respectively) have been found to be primarily due to the difference in the strength and varieties of π-π stacking interactions. While in mmimPic, several different types of π-π stacking interactions between the aromatic rings (such as picrate-picrate, picrate-imidazole and imidazolium-imidazolium cation rings) are observed, only one type of π-π stacking interaction (picrate-picrate rings) is found to exist in the pmimPic IL. NMR spectroscopic studies reveal that the interaction of these ILs with solvent molecules is different and depends on the dielectric constant of the solvent. While an ion solvation model explains the solvation in high dielectric solvents, an ion-pair solvation model is found to be more appropriate for low dielectric constant solvents. The enhanced stability of these investigated picrate ILs compared with that of inorganic picrate salts under high doses of γ radiation clearly indicates the importance of weak interionic interactions in ILs, and also opens up the possibility of the application of picrate ILs as prospective diluents in nuclear separation for advanced fuel cycling process.
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Affiliation(s)
- Sumit Kumar Panja
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi-221005, India.
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Grunenberg J. III-defined concepts in chemistry: rigid force constants vs. compliance constants as bond strength descriptors for the triple bond in diboryne. Chem Sci 2015; 6:4086-4088. [PMID: 29218174 PMCID: PMC5707508 DOI: 10.1039/c5sc01322d] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 05/02/2015] [Indexed: 01/15/2023] Open
Abstract
In a recent publication, the interpretation of Braunschweig's diboryne NHC-BB-NHC as a true triple bond is questioned. The analysis by Köppe and Schnöckel is based, inter alia, on the calculation of rigid coupling force constants. Nevertheless, since it is known for a long time that the use of rigid force constants as bond strength descriptors is by no means straightforward, we recomputed the rigid force constants for a model diboryne, applying different coordinate systems and compared the values with the relaxed force constants (generalized compliance constants, GCC). In contrast with the results by Schnöckel and Köppe, the true coupling between the boron-boron bond and the boron-carbon bond, that is, after the elimination of all numerical artifacts, is negligible (fBB/BC = -0.003).
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Affiliation(s)
- Jörg Grunenberg
- Institut für Anorganische und Analytische Chemie , Technische Universität Braunschweig , Braunschweig 38106 , Germany .
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Chavagnan T, Sémeril D, Matt D, Harrowfield J, Toupet L. Cracking cavitands: metal-directed scission of phosphinyl-substituted resorcinarenes. Chemistry 2015; 21:6678-81. [PMID: 25801729 DOI: 10.1002/chem.201500177] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Indexed: 11/06/2022]
Abstract
Resorcinarene-derived tetramethylene cavitands bearing a diphenylphosphino group grafted to their wider rim undergo facile, directed C-O bond breaking upon reaction with transition-metal ions in the presence of nucleophiles. One possible reaction mechanism involves formation of a P,O-chelate complex, which weakens the adjacent O-CH2 bond, leading to the formation of an oxacarbenium intermediate.
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Affiliation(s)
- Thierry Chavagnan
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse, Institut de Chimie UMR 7177 CNRS-Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg cedex (France)
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Wise MD, Holstein JJ, Pattison P, Besnard C, Solari E, Scopelliti R, Bricogne G, Severin K. Large, heterometallic coordination cages based on ditopic metallo-ligands with 3-pyridyl donor groups. Chem Sci 2015; 6:1004-1010. [PMID: 29560187 PMCID: PMC5811078 DOI: 10.1039/c4sc03046j] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 11/03/2014] [Indexed: 12/26/2022] Open
Abstract
Ditopic N-donor ligands with terminal 4-pyridyl groups are omnipresent in coordination-based self-assembly. The utilization of ligands with 3-pyridyl donor groups is significantly less common, because the intrinsic conformational flexibility of these ligands tends to favor the formation of small aggregates. Here, we show that large Pd6L1212+ cages can be obtained by reaction of Pd(ii) salts with metallo-ligands L bearing terminal 3-pyridyl groups. The easy-to-access metallo-ligands contain an Fe(ii) clathrochelate core. These sterically demanding clathrochelate complexes prevent the formation of smaller aggregates, which is observed for less bulky analogous building blocks. The cages were shown to bind BF4- and BPh4- anions in aqueous solvent mixtures, whilst the lateral size of the clathrochelate significantly affects their guest encapsulation behavior.
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Affiliation(s)
- Matthew D Wise
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Julian J Holstein
- GZG , Abteilung Kristallographie , Georg-August-Universität Göttingen , Goldschmidtstr. 1 , 37077 Göttingen , Germany
- Global Phasing Ltd. , Sheraton House , Castle Park Cambridge CB3 0AX , England
| | - Philip Pattison
- Swiss-Norwegian Beamline , ESRF , F-38043 Grenoble , Switzerland
- Laboratory of Crystallography , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Celine Besnard
- Laboratory of X-ray Crystallography , University of Geneva , CH-1211-Geneva 4 , Switzerland
| | - Euro Solari
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Gerard Bricogne
- Global Phasing Ltd. , Sheraton House , Castle Park Cambridge CB3 0AX , England
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
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Qi Z, Heinrich T, Moorthy S, Schalley CA. Gas-phase chemistry of molecular containers. Chem Soc Rev 2015; 44:515-31. [DOI: 10.1039/c4cs00167b] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The use of mass spectrometry for the investigation of supramolecular capsules and containers in solution and the gas-phase is reviewed.
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Affiliation(s)
- Zhenhui Qi
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Thomas Heinrich
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Suresh Moorthy
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
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42
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Liu Y, Qin Y, Jiang D. Squaramide-based tripodal ionophores for potentiometric sulfate-selective sensors with high selectivity. Analyst 2015; 140:5317-23. [DOI: 10.1039/c5an00259a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A class of squaramide-based tripodal molecules was employed as new ionophores for highly sensitive and selective sulfate-selective sensors.
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Affiliation(s)
- Yueling Liu
- State Key Laboratory of Analytical Chemistry for Life science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Yu Qin
- State Key Laboratory of Analytical Chemistry for Life science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Dechen Jiang
- State Key Laboratory of Analytical Chemistry for Life science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
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Chakraborty S, Arunachalam M, Dutta R, Ghosh P. Arene platform based hexa-amide receptors for anion recognition: single crystal X-ray structural and thermodynamic studies. RSC Adv 2015. [DOI: 10.1039/c5ra08747c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Compartmental recognition of [Cl2(inf>O/inf>O)2]2− in the cavity of p-fluoro-phenyl substituted hexa-amide receptor.
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Affiliation(s)
- Sourav Chakraborty
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - M. Arunachalam
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Ranjan Dutta
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Pradyut Ghosh
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science
- Kolkata 700032
- India
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Khrizman A, Cheng HY, Bottini G, Moyna G. Observation of aliphatic C–H⋯X hydrogen bonds in imidazolium ionic liquids. Chem Commun (Camb) 2015; 51:3193-5. [DOI: 10.1039/c4cc09783a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Measurement of H/D isotope effects on the19F resonances of sequentially deuterated 1-n-butyl-3-methylimidazolium hexafluorophosphate and tetrafluoroborate isotopologues reveals the formation of aliphatic C–H⋯X hydrogen bonds between the fluorinated anions and protons along theN-alkyl sidechains of the cations.
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Affiliation(s)
- Alexander Khrizman
- Department of Chemistry & Biochemistry
- University of the Sciences in Philadelphia
- Philadelphia
- USA
| | - Hiu Yan Cheng
- Department of Chemistry & Biochemistry
- University of the Sciences in Philadelphia
- Philadelphia
- USA
| | - Gualberto Bottini
- Departamento de Química del Litoral
- Centro Universitario Regional Litoral Norte
- Universidad de la República
- Paysandú 60000
- Uruguay
| | - Guillermo Moyna
- Department of Chemistry & Biochemistry
- University of the Sciences in Philadelphia
- Philadelphia
- USA
- Departamento de Química del Litoral
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Dutta R, Ghosh P. Recent developments in anion induced capsular self-assemblies. Chem Commun (Camb) 2014; 50:10538-54. [PMID: 24934477 DOI: 10.1039/c4cc02957g] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This Feature Article covers recent developments in anion induced capsular self-assemblies, with particular focus on important reports from 2011 to 2013. Contemporary studies on the capsular binding of environmentally and biologically relevant anions in aqueous medium are described. Emerging reports of such systems reveal their potential utility towards various functional aspects like anion separation, CO2 fixation, hydrated halide recognition and anion transportation. This article also highlights potential applications of anion induced molecular capsules.
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Affiliation(s)
- Ranjan Dutta
- 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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Ramabhadran RO, Hua Y, Flood AH, Raghavachari K. C vs N: Which End of the Cyanide Anion Is a Better Hydrogen Bond Acceptor? J Phys Chem A 2014; 118:7418-23. [DOI: 10.1021/jp412816w] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | - Yuran Hua
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Amar H. Flood
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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Ramabhadran RO, Liu Y, Hua Y, Ciardi M, Flood AH, Raghavachari K. An overlooked yet ubiquitous fluoride congenitor: binding bifluoride in triazolophanes using computer-aided design. J Am Chem Soc 2014; 136:5078-89. [PMID: 24559019 DOI: 10.1021/ja500125r] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Despite its ubiquity during the binding and sensing of fluoride, the role of bifluoride (HF2(-)) and its binding properties are almost always overlooked. Here, we give one of the first examinations of bifluoride recognition in which we use computer-aided design to modify the cavity shape of triazolophanes to better match with HF2(-). Computational investigation indicates that HF2(-) and Cl(-) should have similar binding affinities to the parent triazolophane in the gas phase. Evaluation of the binding geometries revealed a preference for binding of the linear HF2(-) along the north-south axis with a smaller Boltzmann weighted population aligned east-west and all states being accessed rapidly through in-plane precessional rotations of the anion. While the (1)H NMR spectroscopy studies are consistent with the calculated structural aspects, binding affinities in solution were determined to be significantly smaller for the bifluoride than the chloride. Computed geometries suggested that a 20° tilting of the bifluoride (stemming from the cavity size) could account for the 25-fold difference between the two binding affinities, HF2(-) < Cl(-). Structural variations to the triazolophane's geometry and electronic modifications to the network of hydrogen bond donors were subsequently screened in a stepwise manner using density functional theory calculations to yield a final design that eliminates the tilting. Correspondingly, the bifluoride's binding affinity (K ∼ 10(6) M(-1)) increased and was also found to remain equal to chloride in the gas and solution phases. The new oblate cavity appeared to hold the HF2(-) in a single east-west arrangement. Our findings demonstrate the promising ability of computer-aided design to fine-tune the structural and electronic match in anion receptors as a means to control the arrangement and binding strength of a desired guest.
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Affiliation(s)
- Raghunath O Ramabhadran
- Department of Chemistry, Indiana University , 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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Van Rossom W, Terentyeva TG, Sodeyama K, Matsushita Y, Tateyama Y, Ariga K, Hill JP. Arylpyrrole oligomers as tunable anion receptors. Org Biomol Chem 2014; 12:5492-9. [DOI: 10.1039/c4ob00357h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel class of oligomeric arylpyrrole receptors has been designed, prepared and analysed for their affinity towards anionic guests.
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Affiliation(s)
- Wim Van Rossom
- World Premier International (WPI)
- Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba, Japan
| | - Tatyana G. Terentyeva
- World Premier International (WPI)
- Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba, Japan
| | - Keitaro Sodeyama
- World Premier International (WPI)
- Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba, Japan
| | - Yoshitaka Matsushita
- World Premier International (WPI)
- Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba, Japan
| | - Yoshitaka Tateyama
- World Premier International (WPI)
- Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba, Japan
| | - Katsuhiko Ariga
- World Premier International (WPI)
- Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba, Japan
| | - Jonathan P. Hill
- World Premier International (WPI)
- Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba, Japan
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Saha S, Akhuli B, Ravikumar I, Lakshminarayanan PS, Ghosh P. Recognition of fluoride in fluorophenyl attached tripodal amide receptors: structural evidence of solvent capped encapsulation of anion in a C3v-symmetric tripodal cleft. CrystEngComm 2014. [DOI: 10.1039/c3ce42440e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Neutral and cationic CH hydrogen bond donors have been actively used in various shape persistent macrocycles, foldamers and “molecular machines”.
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Affiliation(s)
- Jiajia Cai
- Department of Chemistry
- The University of Texas
- Austin, USA
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