1
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Okabe K, Yamashina M, Tsurumaki E, Uekusa H, Toyota S. Solid-State Self-Assembly: Exclusive Formation and Dynamic Interconversion of Discrete Cyclic Assemblies Based on Molecular Tweezers. J Org Chem 2024; 89:9488-9495. [PMID: 38913719 PMCID: PMC11232003 DOI: 10.1021/acs.joc.4c00794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
In contrast to self-assembly in solution systems, the construction of well-defined assemblies in the solid state has long been identified as a challenging task. Herein, we report the formation of tweezers-shaped molecules into various assemblies through a solid-state self-assembly strategy. The relatively flexible molecular tweezers undergo exclusive and quantitative assembly into either cyclic hexamers or a porous network through classical recrystallization or the exposure of powders to solvent vapor, despite the fact that they form only dimers in solution. The cyclic hexamers have high thermal stability and exhibit moderate solid-state fluorescence. The formation of heterologous assemblies consisting of different tweezers allows for tuning these solid-state properties of the cyclic hexamer. Furthermore, (trimethylsilyl)ethynyl-substituted tweezers demonstrate solvent-vapor-induced dynamic interconversion between the cyclic hexamer and a pseudocyclic dimer in the solid state. This assembly behavior, which has been studied extensively in solution-based supramolecular chemistry, had not been accomplished in the solid state so far.
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Affiliation(s)
- Koki Okabe
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Masahiro Yamashina
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Eiji Tsurumaki
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Hidehiro Uekusa
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
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2
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Giovanardi G, Cattani S, Balestri D, Secchi A, Cera G. Iridium-Catalyzed C-H Borylations: Regioselective Functionalizations of Calix[4]arene Macrocycles. J Org Chem 2024; 89:8486-8499. [PMID: 38816966 DOI: 10.1021/acs.joc.4c00419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
We report iridium-catalyzed C-H borylations for the regioselective synthesis of distally disubstituted calix[4]arene macrocycles. The atom- and step-economical method led to a broad family of calix[4]arenes in good yields and functional group tolerance. The synthetic utility of the C-H borylation protocol was finally illustrated with several late-stage modifications for the synthesis of elaborate calix[4]arenes frameworks, otherwise challenging to achieve with commonly employed procedures.
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Affiliation(s)
- Gabriele Giovanardi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Silvia Cattani
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Davide Balestri
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
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3
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Tseng TW, Luo TT, Tseng KY, Hong YX, Huang GC. Bent-bis(triazolyl)-based coordination polymers tuned by dicarboxylate ligands: syntheses, structures and properties. CrystEngComm 2021. [DOI: 10.1039/d1ce00780g] [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
Seven new coordination polymers based on the bent 1,1'-(oxybis(1,4-phenylene))-bis(1H-1,2,4-triazole) ligand, with diverse structures and novel topologies, that are directed by the dicarboxylate ligands.
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Affiliation(s)
- Tien-Wen Tseng
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Tzuoo-Tsair Luo
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Kuo-Yang Tseng
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Yu-Xian Hong
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Guang-Cheng Huang
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
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4
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Tseng TW, Luo TT, Kan SJ, Nguyen DDA. Auxiliary ligand-modulated trisimidazole-based coordination polymers: syntheses, structures and photoluminescence properties. CrystEngComm 2021. [DOI: 10.1039/d1ce00068c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Five coordination polymers having 1,3,5-tris(1-imidazolyl)benzene and the varied O-donor auxiliary ligands were designed and synthesized. Further, the auxiliary ligands modulated these complexes with structural diversities and novel topologies.
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Affiliation(s)
- Tien-Wen Tseng
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Tzuoo-Tsair Luo
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Shou-Ju Kan
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Doan Duy-An Nguyen
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
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5
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Zhou Y, Jie K, Zhao R, Huang F. Supramolecular-Macrocycle-Based Crystalline Organic Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1904824. [PMID: 31535778 DOI: 10.1002/adma.201904824] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/27/2019] [Indexed: 06/10/2023]
Abstract
Supramolecular macrocycles are well known as guest receptors in supramolecular chemistry, especially host-guest chemistry. In addition to their wide applications in host-guest chemistry and related areas, macrocycles have also been employed to construct crystalline organic materials (COMs) owing to their particular structures that combine both rigidity and adaptivity. There are two main types of supramolecular-macrocycle-based COMs: those constructed from macrocycles themselves and those prepared from macrocycles with other organic linkers. This review summarizes recent developments in supramolecular-macrocycle-based COMs, which are categorized by various types of macrocycles, including cyclodextrins, calixarenes, resorcinarenes, pyrogalloarenes, cucurbiturils, pillararenes, and others. Effort is made to focus on the structures of supramolecular-macrocycle-based COMs and their structure-function relationships. In addition, the application of supramolecular-macrocycle-based COMs in gas storage or separation, molecular separation, solid-state electrolytes, proton conduction, iodine capture, water or environmental treatment, etc., are also presented. Finally, perspectives and future challenges in the field of supramolecular-macrocycle-based COMs are discussed.
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Affiliation(s)
- Yujuan Zhou
- State Key Laboratory of Chemical Engineering, Department of Chemistry, Center for Chemistry of High-Performance & Novel Materials, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Kecheng Jie
- State Key Laboratory of Chemical Engineering, Department of Chemistry, Center for Chemistry of High-Performance & Novel Materials, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Run Zhao
- State Key Laboratory of Chemical Engineering, Department of Chemistry, Center for Chemistry of High-Performance & Novel Materials, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Department of Chemistry, Center for Chemistry of High-Performance & Novel Materials, Zhejiang University, Hangzhou, 310027, P. R. China
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6
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Deshmukh G, Krishnamoorthy K. Conversion of curved assemblies into two dimensional sheets. NANOSCALE 2019; 11:5732-5736. [PMID: 30865738 DOI: 10.1039/c8nr09915d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The design and preparation of organic two dimensional (O2D) sheets and their conversion to curved nanostructures is in its infancy. To convert a flat structure into a curved structure, the molecule must have multiple interaction possibilities and an in-built twist. The conjugated small molecule iso-Indigo (i-Indigo) comprises two phenyl rings that are twisted (the dihedral angle is 15°) at the junction. The i-Indigo has been connected with moieties that impart hydrogen bonding and van der Waals interactions. Due to the presence of the π cloud in i-Indigo, π-π interactions are also present in the molecule. While all three interactions are in operation, rings and toroids are formed. Upon addition of hydrogen bonding competing solvents, the rings and toroids unravel to form O2D sheets. Control molecules that don't have hydrogen bonding moieties and π-π interactions form random assemblies. Please note that the rings, toroids and O2D sheets are formed in a single solvent by simple dissolution, unlike previous approaches that involve multiple steps and solvents.
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Affiliation(s)
- Gunvant Deshmukh
- Polymers and Advanced Materials Laboratory, CSIR-National Chemical Laboratory, Pune 411008, India.
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Abstract
Calixarenes are cyclic oligomers obtained by condensation of suitable p-functionalised phenols with formaldehyde, usually allowing for the synthesis of the well known small calixarenes (including up to eight phenolic subunits). We report here the discovery of much larger members of this family, exhibiting sizes up to 90 phenolic subunits: the giant calixarenes. These macrocycles are obtained according to simple, easily scalable processes, in yields up to 65%. We show that the formation of these giant macrocycles is favored by an oxygen-containing-group at the para-position of the starting phenol, high concentrations of heavy alkaline bases (rubidium or cesium hydroxides) and long reaction times. A mechanism is proposed to rationalize these observations. These giant macrocycles can also be obtained in the quasi-solid state, opening interesting perspectives in the field of calixarenes chemistry. Along with their intrinsic fundamental interest, these objects are also opening interesting applicative potentialities.
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Rathnayake AS, Fraser HWL, Brechin EK, Dalgarno SJ, Baumeister JE, Rungthanaphatsophon P, Walensky JR, Barnes CL, Atwood JL. Oxidation State Distributions Provide Insight into Parameters Directing the Assembly of Metal–Organic Nanocapsules. J Am Chem Soc 2018; 140:13022-13027. [DOI: 10.1021/jacs.8b07775] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Asanka S. Rathnayake
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, Missouri 65211, United States
| | - Hector W. L. Fraser
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Euan K. Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Scott J. Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, United Kingdom
| | - Jakob E. Baumeister
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, Missouri 65211, United States
| | - Pokpong Rungthanaphatsophon
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, Missouri 65211, United States
| | - Justin R. Walensky
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, Missouri 65211, United States
| | - Charles L. Barnes
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, Missouri 65211, United States
| | - Jerry L. Atwood
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, Missouri 65211, United States
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Tseng TW, Luo TT, Chiu HS, Wang CC, Lee GH, Sheu HS, Lu KL. Structural Transformations of Amino-Acid-Based Polymers: Syntheses and Structural Characterization. Polymers (Basel) 2018; 10:polym10040360. [PMID: 30966395 PMCID: PMC6414969 DOI: 10.3390/polym10040360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/13/2018] [Accepted: 03/17/2018] [Indexed: 12/23/2022] Open
Abstract
A discrete complex [Zn(tpro)2(H2O)2] (1, Htpro = l-thioproline), and two structural isomers of coordination polymers, a 1D chain of [Zn(tpro)2]n (2) and a layered structure [Zn(tpro)2]n (3), were synthesized and characterized. The discrete complex 1 undergoes a temperature-driven structural transformation, leading to the formation of a 1D helical coordination polymer 2. Compound 3 is comprised of a 2D homochiral layer network with a (4,4) topology. These layers are mutually linked through hydrogen bonding interactions, resulting in the formation of a 3D network. When 1 is heated, it undergoes nearly complete conversion to the microcrystalline form, i.e., compound 2, which was confirmed by powder X-ray diffractions (PXRD). The carboxylate motifs could be activated after removing the coordinated water molecules by heating at temperatures of up to 150 °C, their orientations becoming distorted, after which, they attacked the activation sites of the Zn(II) centers, leading to the formation of a 1D helix. Moreover, a portion of the PXRD pattern of 1 was converted into the patterns corresponding to 2 and 3, and the ratio between 2 and 3 was precisely determined by the simulation study of in-situ synchrotron PXRD expriments. Consequently, such a 0D complex is capable of underdoing structural transformations and can be converted into 1D and/or 2D amino acid-based coordination polymers.
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Affiliation(s)
- Tien-Wen Tseng
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan.
| | - Tzuoo-Tsair Luo
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan.
| | - Hsiao-Shan Chiu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
- Department of Chemistry, Soochow University, Taipei 100, Taiwan.
| | - Chih-Chieh Wang
- Department of Chemistry, Soochow University, Taipei 100, Taiwan.
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
| | - Hwo-Shuenn Sheu
- National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan.
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
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10
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Wang HX, Hu SZ, Meng Z, Han Y, Chen CF. Synthesis and Structures of Triptycene-Derived Oxacalixarenes with Expanded Cavities: Tunable and Switchable Complexation towards Bipyridinium Salts. Chem Asian J 2016; 11:2756-2762. [PMID: 27167105 DOI: 10.1002/asia.201600419] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Indexed: 12/31/2022]
Abstract
New triptycene-derived oxacalixarene H1 was efficiently synthesized by a template cyclization step, and anilino-substituted macrocycle H2 was subsequently afforded through straightforward nucleophilic displacement of the active chlorine atom in H1. Oxacalixarene H1 adopts a fixed boat-like 1,3-alternate conformation and shows moderate complexation abilities towards various bipyridinium salts. However, the affinities of H2 towards the guests were found to be substantially stronger, which could be tentatively attributed to the additional hydrogen-bonding site, π-π stacking site, and especially the increased electron richness of the host. Furthermore, the acid-base switchable complexation process between H1 and the bipyridinium salt was also realized, which could potentially facilitate the construction of high-level stimuli-responsive supramolecular structures based on the newly synthesized oxacalixarene.
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Affiliation(s)
- Han-Xiao Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shu-Zhen Hu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zheng Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ying Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
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11
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Thiacalixarenes: emergent supramolecules in crystal engineering and molecular recognition. J INCL PHENOM MACRO 2016. [DOI: 10.1007/s10847-016-0616-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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12
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Sharma S, Gopalakrishna M, Venugopalan P, Suresh CH, Haridas V. Stackabilization: self-assembling bispidinophanes. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.08.072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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13
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Singharoy A, Venkatakrishnan B, Liu Y, Mayne CG, Lee S, Chen CH, Zlotnick A, Schulten K, Flood AH. Macromolecular Crystallography for Synthetic Abiological Molecules: Combining xMDFF and PHENIX for Structure Determination of Cyanostar Macrocycles. J Am Chem Soc 2015; 137:8810-8. [PMID: 26121416 DOI: 10.1021/jacs.5b04407] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Crystal structure determination has long provided insight into structure and bonding of small molecules. When those same small molecules are designed to come together in multimolecular assemblies, such as in coordination cages, supramolecular architectures and organic-based frameworks, their crystallographic characteristics closely resemble biological macromolecules. This resemblance suggests that biomacromolecular refinement approaches be used for structure determination of abiological molecular complexes that arise in an aggregate state. Following this suggestion we investigated the crystal structure of a pentagonal macrocycle, cyanostar, by means of biological structure analysis methods and compared results to traditional small molecule methods. Cyanostar presents difficulties seen in supramolecular crystallography including whole molecule disorder and highly flexible solvent molecules sitting in macrocyclic and intermolecule void spaces. We used the force-field assisted refinement method, molecular dynamics flexible fitting algorithm for X-ray crystallography (xMDFF), along with tools from the macromolecular structure determination suite PHENIX. We found that a standard implementation of PHENIX, namely one without xMDFF, either fails to produce a solution by molecular replacement alone or produces an inaccurate structure when using generic geometry restraints, even at a very high diffraction data resolution of 0.84 Å. The problems disappear when taking advantage of xMDFF, which applies an optimized force field to realign molecular models during phasing by providing accurate restraints. The structure determination for this model system shows excellent agreement with the small-molecule methods. Therefore, the joint xMDFF-PHENIX refinement protocol provides a new strategy that uses macromolecule methods for structure determination of small molecules and their assemblies.
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Affiliation(s)
- Abhishek Singharoy
- †Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Balasubramanian Venkatakrishnan
- ‡Molecular and Cellular Biochemistry Department, Indiana University, 212 South Hawthorne Drive, Bloomington, Indiana 47405, United States
| | - Yun Liu
- §Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Christopher G Mayne
- †Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Semin Lee
- §Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Chun-Hsing Chen
- §Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Adam Zlotnick
- ‡Molecular and Cellular Biochemistry Department, Indiana University, 212 South Hawthorne Drive, Bloomington, Indiana 47405, United States
| | - Klaus Schulten
- †Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801, United States.,∥Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801, United States
| | - Amar H Flood
- §Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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Wang W, Yang W, Guo R, Gong S. ‘Honeycomb’ nanotube assembly based on thiacalix[4]arene derivatives by weak interactions. CrystEngComm 2015. [DOI: 10.1039/c5ce01088h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Crystallisation of six thiacalix[4]arene derivatives from hexane–chloroform leads to ‘honeycomb’ nanotube architectures and each tubular stack is surrounded by six close tubular neighbours via weak interactions, such as S⋯π interactions, C–H⋯π interactions, and so on.
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Affiliation(s)
- Wei Wang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, PR China
| | - Weiping Yang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, PR China
- Key Laboratory of Tobacco Flavor Basic Research
- Zhengzhou Tobacco Research Institute of CNTC
| | - Rong Guo
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, PR China
| | - Shuling Gong
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, PR China
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15
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Haridas V, Sapala AR, Jasinski JP. Self-assembling triazolophanes: from croissants through donuts to spherical vesicles. Chem Commun (Camb) 2015; 51:6905-8. [DOI: 10.1039/c4cc09587a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A detailed ultramicroscopic analysis of three novel triazolophanes demonstrated a hierarchical self-assembly mechanism. These macrocycles self-assemble in a concentration dependent manner to hemi-toroids, toroids and finally to vesicles. The finding was supported by ultramicroscopy and X-ray crystal structure studies.
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Affiliation(s)
- V. Haridas
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- New Delhi-110016
- India
| | - Appa Rao Sapala
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- New Delhi-110016
- India
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16
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Du S, Yu TQ, Liao W, Hu C. Structure modeling, synthesis and X-ray diffraction determination of an extra-large calixarene-based coordination cage and its application in drug delivery. Dalton Trans 2015. [DOI: 10.1039/c5dt01526j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An extra-large octahedral calixarene-based coordination cage was modeled by the isomorphic replacement approach from a known structure of a smaller size. And then it was successfully synthesized and determined.
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Affiliation(s)
- Shangchao Du
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Tang-Qing Yu
- Courant Institute of Mathematical Science
- New York University
- New York
- USA
| | - Wuping Liao
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Chunhua Hu
- Department of Chemistry
- New York University
- New York
- USA
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17
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Sun J, Frasconi M, Liu Z, Barnes JC, Wang Y, Chen D, Stern CL, Fraser Stoddart J. Formation of ring-in-ring complexes between crown ethers and rigid TVBox8+. Chem Commun (Camb) 2015; 51:1432-5. [DOI: 10.1039/c4cc08053j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An octacationic tetraviologen-based cyclophane—so called TVBox8+—can form a ring-in-ring complex with bis-1,5-dinaphtho[50]crown-14, which represents a key intermediate for constructing molecular Borromean rings in a stepwise manner.
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Affiliation(s)
- Junling Sun
- Department of Chemistry
- Northwestern University
- Evanston
- USA
| | - Marco Frasconi
- Department of Chemistry
- Northwestern University
- Evanston
- USA
| | - Zhichang Liu
- Department of Chemistry
- Northwestern University
- Evanston
- USA
| | | | - Yuping Wang
- Department of Chemistry
- Northwestern University
- Evanston
- USA
| | - Dongyang Chen
- Department of Chemistry
- Northwestern University
- Evanston
- USA
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18
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Liu M, Du S, Bi Y, Liao W. A tetrahedral coordination cage based on p-tert-butylthiacalix[4]arene and 5-sulfoisophthalic acid. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.01.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Zhang S, Yang Q, Liu X, Xie G, Wei Q, Chen S, Gao S. A Series of Enthalpy/Entropy-Driven Reversible Dissolution/Reorganization Equilibriums in the System of Cu(NO3)2–HL–GdX3–H2O (HL=5-methylpyrazine-2-carboxylic acid; X=Cl, Br, NO3, ClO4). Aust J Chem 2014. [DOI: 10.1071/ch13675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Five coordination polymers, [Cu(L)2]n (1), {[Cu(L)(Cl)(H2O)]·H2O}2n (2), [KCu(L)(μ-Cl)2]n (3), [Cu(L)(Br)H2O]n (4), and {[Cu0.5(HL)(H2O)](NO3)·H2O}2n (5) (HL = 5-methylpyrazine-2-carboxylic acid) were obtained by reactions of a pyramidal CuII-containing ligand, {[Cu(L)2(H2O)]·3H2O}n (LCu), with Gd(ClO4)3·6H2O, GdCl3·6H2O, GdCl3·6H2O/KCl, GdBr3·6H2O, or Gd(NO3)3·6H2O in water. Structural analysis reveals that the structures of these compounds range from a 0D block to a 2D network with modification of the environment of the CuII ions compared with LCu. Interestingly, there occurred a series of reversible dissolution/reorganization equilibriums between the initial reactants and the final products 1–5, which were determined as enthalpy/entropy driven chemical equilibriums by single crystal X-ray diffraction and microcalorimetry. In addition, the thermal stability of 1–4 and the magnetic property of 2 are discussed.
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Yamada M, Ootashiro Y, Kondo Y, Hamada F. A 3D supramolecular network assembly based on thiacalix[4]arene by halogen–halogen, CH–Br, CH–π, and S–π interactions. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.12.102] [Citation(s) in RCA: 20] [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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21
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Synthesis, structure and luminescence of novel 2D co-crystals based on asymmetric 5-substituted pyrimidines and isophthalic acid: Alternate arrangement and π–π interactions. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.11.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Liang LL, Ni XL, Zhao Y, Chen K, Xiao X, Zhang YQ, Redshaw C, Zhu QJ, Xue SF, Tao Z. Construction of cucurbit[7]uril based tubular nanochannels incorporating associated [CdCl4]2- and lanthanide ions. Inorg Chem 2013; 52:1909-15. [PMID: 23360231 DOI: 10.1021/ic302145j] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
There is intensive interest in the design of tubular channels because of their novel structures and various applications in a variety of research fields. Herein, we present a series of coordination-driven Q[7]-derived organic nanochannels using an anion-induced strategy under different acid concentrations. An advantage of this approach is that the tubular channels not only retain the original character of the parent macrocyclic receptors but also provide deep hydrophobic cavities possessing guest binding sites. Importantly, this study also emphasizes the efficiency of the macrocyclic receptors in providing a tubular hydrophobic cavity by directly stacking on top of one another with the anion-fixed and by acid control. The resulting combination of hydrogen bonding, C-H···Cl, and ion-dipole interactions helps to stabilize these supramolecular architectures. Such systems are both tunable and versatile and allow for interconvertibility in the construction of nanochannels based on these macrocyclic receptors.
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Affiliation(s)
- Li-Li Liang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
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Hou GG, Zhao HJ, Sun JF, Lin D, Dai XP, Han JT, Zhao H. Synthesis, structure and luminescence of Co-crystals with hexagonal channels: arranging disposition and π–π interactions. CrystEngComm 2013. [DOI: 10.1039/c2ce25759a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Bi Y, Wang S, Liu M, Du S, Liao W. A tetragonal prismatic {Co32} nanocage based on thiacalixarene. Chem Commun (Camb) 2013; 49:6785-7. [DOI: 10.1039/c3cc43347a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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25
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Biedermann F, Scherman OA. Cucurbit[8]uril mediated donor-acceptor ternary complexes: a model system for studying charge-transfer interactions. J Phys Chem B 2012; 116:2842-9. [PMID: 22309573 DOI: 10.1021/jp2110067] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A supramolecular self-assembly approach is described which allows for the convenient preparation of a wide range of charge-transfer (CT) donor-acceptor complexes in aqueous solutions. When one equiv of the macrocyclic host cucurbit[8]uril (CB[8]) is added to an aqueous donor and acceptor solution, a heteroternary complex forms inside the host's cavity with a well-defined face-to-face π-π-stacking geometry of the donor and acceptor. This heteroternary, CB[8]-mediated complex offers the opportunity to study the CT phenomena at low concentrations and free from complications arising from any donor-donor and acceptor-acceptor interactions as a result of the large binding affinities and the very high selectivity over the formation of these homoternary complexes. Thus, this supramolocular self-assembly strategy is a practical donor-acceptor mix-and-match approach with synthetic advantages over much more cumbersome tethering schemes. While the characteristic UV/vis features of a few CB[8] ternary systems had been described as a CT band, we present for the first time systematic evidence for the existence of CT interactions between several donor-acceptor pairs that are mediated by the host CB[8]. Correlation of the experimentally obtained CT λ(max) to computed HOMO-LUMO energies demonstrated that the CT process in the host's cavity can be described by the Mulliken model. Furthermore, the literature claim of a "CT driving force" for the formation of CB[8] ternary complexes was scrutinized and evaluated by calorimetric (ITC) and ESI-MS measurements. The findings indicated that neither in the aqueous medium nor in the "gas-phase" is CT of energetic relevance to the Gibbs free binding energy. In contrast, electrostatic considerations combined with solvation effects are much better suited to rationalize the observed trends in binding affinities. Additionally, the CT λ(max) was found to be much more red-shifted (≥75 nm) inside the CB[8] cavity than in any polar organic solvents or water, indicating a significant stabilization of the CT excited state within the host cavity, further demonstrating the unique electrostatic, polar properties of the host cavity.
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Affiliation(s)
- Frank Biedermann
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdon
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26
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Du S, Hu C, Xiao JC, Tan H, Liao W. A giant coordination cage based on sulfonylcalix[4]arenes. Chem Commun (Camb) 2012; 48:9177-9. [DOI: 10.1039/c2cc34265k] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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27
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Wei W, Wang G, Zhang Y, Jiang F, Wu M, Hong M. A Versatile Tripodal Host with Cylindrical Conformation: Solvatomorphism, Inclusion Behavior, and Separation of Guests. Chemistry 2011; 17:2189-98. [DOI: 10.1002/chem.201002246] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Indexed: 11/11/2022]
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28
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Hamada F, Yamada M, Kondo Y, Ito SI, Akiba U. Channel structure for guest inclusion based on hexameric assembly of thiacalix[4]arene analogue. CrystEngComm 2011. [DOI: 10.1039/c1ce05813d] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Xue M, Chen CF. Aromatic single-walled organic nanotubes self-assembled from NH-bridged azacalix[2]triptycene[2]pyridine. Chem Commun (Camb) 2011; 47:2318-20. [DOI: 10.1039/c0cc04580b] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Chen CF. Novel triptycene-derived hosts: synthesis and their applications in supramolecular chemistry. Chem Commun (Camb) 2011; 47:1674-88. [DOI: 10.1039/c0cc04852f] [Citation(s) in RCA: 224] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Li Y, Yang W, Chen Y, Gong S. Pendant orientation and its influence on the formation of hydrogen-bonded thiacalixarene nanotubes. CrystEngComm 2011. [DOI: 10.1039/c0ce00129e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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32
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Mastalerz M, Estevez Rivera HJ, Oppel IM, Dyker G. Supramolecular single-stranded calix[4]arene helices—towards a crystal engineering approach of homochiral assemblies. CrystEngComm 2011. [DOI: 10.1039/c1ce05234a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mallick A, Saha S, Pachfule P, Roy S, Banerjee R. Structure and Gas Sorption Behavior of a New Three Dimensional Porous Magnesium Formate. Inorg Chem 2010; 50:1392-401. [PMID: 21192733 DOI: 10.1021/ic102057p] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arijit Mallick
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Subhadeep Saha
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Pradip Pachfule
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Sudip Roy
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Rahul Banerjee
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
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34
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Huc V, Npetgat E, Guérineau V, Bourcier S, Dos Santos A, Guillot R, Baltaze JP, Martini C. p-(Benzyloxy)calix[8]arene Synthesis Revisited: p-(Benzyloxy)calix[4]-, p-(Benzyloxy)calix[5]-, p-(Benzyloxy)calix[7]-, and p-(Benzyloxy)bis(homooxa)calix[4]arenes. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901405] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Tian XH, Chen CF. Triptycene-Derived Calix[6]arenes: Synthesis, Structures, and Their Complexation with Fullerenes C60and C70. Chemistry 2010; 16:8072-9. [DOI: 10.1002/chem.201000517] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Huc V, Guérineau V. C3v(Trimethyl)p-(Benzyloxy)calix[6]arene: A Versatile Platform for the Synthesis of FunctionalizedC3vCalix[6]arenes. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901281] [Citation(s) in RCA: 5] [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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37
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Scheurer A, Ako A, Saalfrank R, Heinemann F, Hampel F, Petukhov K, Gieb K, Stocker M, Müller P. Synthesis, Magnetic Properties, and STM Spectroscopy of Cobalt(II) Cubanes [CoII4(Cl)4(HL)4]. Chemistry 2010; 16:4784-92. [DOI: 10.1002/chem.200902578] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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38
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Hou GG, Ma JP, Wang L, Wang P, Dong YB, Huang RQ. Co-crystallization of oxadiazole-bridged pyridyl-N-oxide building modules with R-aromatics (R = –OH, –NH2 and –COOH). CrystEngComm 2010. [DOI: 10.1039/b923810g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Yang Y, Xue M, Chen CF. Nanotoroidal tubule assembled from a functionalized oxacalix[4]arene. CrystEngComm 2010. [DOI: 10.1039/b927446d] [Citation(s) in RCA: 15] [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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40
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Kersting B, Lehmann U. Chemistry of metalated container molecules. ADVANCES IN INORGANIC CHEMISTRY 2009. [DOI: 10.1016/s0898-8838(09)00207-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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41
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Tian XH, Hao X, Liang TL, Chen CF. Triptycene-derived calix[6]arenes: synthesis, structure and tubular assemblies in the solid state. Chem Commun (Camb) 2009:6771-3. [DOI: 10.1039/b912323g] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Liao W, Li Y, Wang X, Bi Y, Su Z, Zhang H. Macroscopic single-crystal tubes assembled with porous supramolecular architecture of water-soluble calixarene and phenanthroline. Chem Commun (Camb) 2009:1861-3. [DOI: 10.1039/b821065a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Saalfrank R, Maid H, Scheurer A, Heinemann F, Puchta R, Bauer W, Stern D, Stalke D. Template and pH-Mediated Synthesis of Tetrahedral Indium Complexes [Cs⊂{In4(L)4}]+and [In4(HNL)4]4+: Breaking the Symmetry ofN-CenteredC3(L)3−To Give Neutral [In4(L)4]. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200804225] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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44
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Saalfrank R, Maid H, Scheurer A, Heinemann F, Puchta R, Bauer W, Stern D, Stalke D. Template and pH-Mediated Synthesis of Tetrahedral Indium Complexes [Cs⊂{In4(L)4}]+and [In4(HNL)4]4+: Breaking the Symmetry ofN-CenteredC3(L)3−To Give Neutral [In4(L)4]. Angew Chem Int Ed Engl 2008; 47:8941-5. [DOI: 10.1002/anie.200804225] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Wu JY, Yang SL, Luo TT, Liu YH, Cheng YW, Chen YF, Wen YS, Lin LG, Lu KL. Time-Evolving Self-Organization and Autonomous Structural Adaptation of Cobalt(II)-Organic Framework Materials with scu and pts Nets. Chemistry 2008; 14:7136-9. [DOI: 10.1002/chem.200800758] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Podoprygorina G, Janke M, Janshoff A, Böhmer V. Self-Assembled Polymers Based on bis-Tetra-Urea Calix[4]arenes Connected via the Wide Rim. Supramol Chem 2008. [DOI: 10.1080/10610270701742561] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ganna Podoprygorina
- a Johannes Gutenberg-Universität Mainz, Abteilung Lehramt Chemie, Fachbereich Chemie, Pharmazie und Geowissenschaften , Duesbergweg 10-14, 55099, Mainz, Germany
| | - Matthias Janke
- b Johannes Gutenberg-Universität, Institut für Physikalische Chemie, Fachbereich Chemie und Pharmazie , Welderweg 11, D-55099, Mainz, Germany
| | - Andreas Janshoff
- b Johannes Gutenberg-Universität, Institut für Physikalische Chemie, Fachbereich Chemie und Pharmazie , Welderweg 11, D-55099, Mainz, Germany
| | - Volker Böhmer
- a Johannes Gutenberg-Universität Mainz, Abteilung Lehramt Chemie, Fachbereich Chemie, Pharmazie und Geowissenschaften , Duesbergweg 10-14, 55099, Mainz, Germany
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47
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Saalfrank R, Spitzlei C, Scheurer A, Maid H, Heinemann F, Hampel F. Enantiospecific Syntheses of Copper Cubanes, Double-Stranded Copper/Palladium Helicates, and a (Dilithium)–Dinickel Coronate from Enantiomerically Pure Bis-1,3-diketones—Solid-State Self-Organization Towards Wirelike Copper/Palladium Strands. Chemistry 2008; 14:1472-81. [DOI: 10.1002/chem.200701537] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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