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Zhu Y, Borstelmann J, Bertleff O, Bergner J, Wei Z, Neiss C, Görling A, Kivala M, Petrukhina MA. Unveiling the Multielectron Acceptor Properties of π-Expanded Pyracylene: Reversible Boat to Chair Conversion. J Am Chem Soc 2024; 146:14715-14723. [PMID: 38741481 PMCID: PMC11140751 DOI: 10.1021/jacs.4c02314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/04/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024]
Abstract
In this work, the chemical reduction of a hybrid pyracylene-hexa-peri-hexabenzocoronene (HPH) nanographene was investigated with different alkali metals (Na, K, Rb) to reveal its remarkable multielectron acceptor abilities. The UV-vis and 1H NMR spectroscopy monitoring of the stepwise reduction reactions supports the existence of all intermediate reduction states up to the hexaanion for HPH. Tuning the experimental conditions enabled the synthesis of the HPH anions with gradually increasing reduction states (up to -5) isolated with different alkali metal ions as crystalline materials. The single-crystal X-ray diffraction structure analysis demonstrates that the highly negatively charged HPH anions (-4 and -5) exhibit a drastic geometry change from boat-shaped (observed in the neutral parent, mono- and dianions) to a chair conformation, which was proved to be fully reversible by NMR spectroscopy. DFT calculations show that this geometry change is induced by an enhanced interaction between the coordinated metal ions and negatively charged HPH core in the chair conformation.
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Affiliation(s)
- Yikun Zhu
- Department
of Chemistry, University at Albany, State
University of New York, Albany, New York 12222, United States
| | - Jan Borstelmann
- Organisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Oliver Bertleff
- Lehrstuhl
für Theoretische Chemie, Friedrich-Alexander
Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, Erlangen 91058, Germany
| | - John Bergner
- Organisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Zheng Wei
- Department
of Chemistry, University at Albany, State
University of New York, Albany, New York 12222, United States
| | - Christian Neiss
- Lehrstuhl
für Theoretische Chemie, Friedrich-Alexander
Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, Erlangen 91058, Germany
| | - Andreas Görling
- Lehrstuhl
für Theoretische Chemie, Friedrich-Alexander
Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, Erlangen 91058, Germany
- Erlangen
National High Performance Computing Center (NHR@FAU), Martensstr. 1, Erlangen 91058, Germany
| | - Milan Kivala
- Organisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Marina A. Petrukhina
- Department
of Chemistry, University at Albany, State
University of New York, Albany, New York 12222, United States
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2
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Zhou Z, Fernández‐García JM, Zhu Y, Evans PJ, Rodríguez R, Crassous J, Wei Z, Fernández I, Petrukhina MA, Martín N. Site‐Specific Reduction‐Induced Hydrogenation of a Helical Bilayer Nanographene with K and Rb Metals: Electron Multiaddition and Selective Rb
+
Complexation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zheng Zhou
- Department of Chemistry University at Albany State University of New York Albany NY 12222 USA
- School of Materials Science and Engineering Tongji University 4800 Cao'an Road Shanghai 201804 China
| | - Jesús M. Fernández‐García
- Departamento de Química Orgánica I Facultad de Ciencias Químicas Universidad Complutense de Madrid Ciudad Universitaria s/n 28040 Madrid Spain
| | - Yikun Zhu
- Department of Chemistry University at Albany State University of New York Albany NY 12222 USA
| | - Paul J. Evans
- Departamento de Química Orgánica I Facultad de Ciencias Químicas Universidad Complutense de Madrid Ciudad Universitaria s/n 28040 Madrid Spain
| | - Rafael Rodríguez
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS—Univ. Rennes Campus de Beaulieu 35042 Rennes Cedex France
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS—Univ. Rennes Campus de Beaulieu 35042 Rennes Cedex France
| | - Zheng Wei
- Department of Chemistry University at Albany State University of New York Albany NY 12222 USA
| | - Israel Fernández
- Departamento de Química Orgánica I Facultad de Ciencias Químicas Universidad Complutense de Madrid Ciudad Universitaria s/n 28040 Madrid Spain
| | - Marina A. Petrukhina
- Department of Chemistry University at Albany State University of New York Albany NY 12222 USA
| | - Nazario Martín
- Departamento de Química Orgánica I Facultad de Ciencias Químicas Universidad Complutense de Madrid Ciudad Universitaria s/n 28040 Madrid Spain
- IMDEA-Nanociencia Campus de la Universidad Autónoma de Madrid C/Faraday, 9 28049 Madrid Spain
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3
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Zhou Z, Fernández‐García JM, Zhu Y, Evans PJ, Rodríguez R, Crassous J, Wei Z, Fernández I, Petrukhina MA, Martín N. Site-Specific Reduction-Induced Hydrogenation of a Helical Bilayer Nanographene with K and Rb Metals: Electron Multiaddition and Selective Rb + Complexation. Angew Chem Int Ed Engl 2022; 61:e202115747. [PMID: 34875130 PMCID: PMC9300088 DOI: 10.1002/anie.202115747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Indexed: 01/01/2023]
Abstract
The chemical reduction of π-conjugated bilayer nanographene 1 (C138 H120 ) with K and Rb in the presence of 18-crown-6 affords [K+ (18-crown-6)(THF)2 ][{K+ (18-crown-6)}2 (THF)0.5 ][C138 H122 3- ] (2) and [Rb+ (18-crown-6)2 ][{Rb+ (18-crown-6)}2 (C138 H122 3- )] (3). Whereas K+ cations are fully solvent-separated from the trianionic core thus affording a "naked" 1.3 - anion, Rb+ cations are coordinated to the negatively charged layers of 1.3 - . According to DFT calculations, the localization of the first two electrons in the helicene moiety leads to an unprecedented site-specific hydrogenation process at the carbon atoms located on the edge of the helicene backbone. This uncommon reduction-induced site-specific hydrogenation provokes dramatic changes in the (electronic) structure of 1 as the helicene backbone becomes more compressed and twisted upon chemical reduction, which results in a clear slippage of the bilayers.
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Affiliation(s)
- Zheng Zhou
- Department of ChemistryUniversity at AlbanyState University of New YorkAlbanyNY 12222USA
- School of Materials Science and EngineeringTongji University4800 Cao'an RoadShanghai201804China
| | - Jesús M. Fernández‐García
- Departamento de Química Orgánica IFacultad de Ciencias QuímicasUniversidad Complutense de MadridCiudad Universitaria s/n28040MadridSpain
| | - Yikun Zhu
- Department of ChemistryUniversity at AlbanyState University of New YorkAlbanyNY 12222USA
| | - Paul J. Evans
- Departamento de Química Orgánica IFacultad de Ciencias QuímicasUniversidad Complutense de MadridCiudad Universitaria s/n28040MadridSpain
| | - Rafael Rodríguez
- Institut des Sciences Chimiques de RennesUMR 6226 CNRS—Univ. RennesCampus de Beaulieu35042Rennes CedexFrance
| | - Jeanne Crassous
- Institut des Sciences Chimiques de RennesUMR 6226 CNRS—Univ. RennesCampus de Beaulieu35042Rennes CedexFrance
| | - Zheng Wei
- Department of ChemistryUniversity at AlbanyState University of New YorkAlbanyNY 12222USA
| | - Israel Fernández
- Departamento de Química Orgánica IFacultad de Ciencias QuímicasUniversidad Complutense de MadridCiudad Universitaria s/n28040MadridSpain
| | - Marina A. Petrukhina
- Department of ChemistryUniversity at AlbanyState University of New YorkAlbanyNY 12222USA
| | - Nazario Martín
- Departamento de Química Orgánica IFacultad de Ciencias QuímicasUniversidad Complutense de MadridCiudad Universitaria s/n28040MadridSpain
- IMDEA-NanocienciaCampus de la Universidad Autónoma de MadridC/Faraday, 928049MadridSpain
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Pennachio M, Zhou Z, Wei Z, Liu S, Rogachev AY, Petrukhina MA. Doubly-Reduced Pentacene in Different Coordination Environments: X-ray Crystallographic and Theoretical Insights into Structural and Electronic Changes. Chemistry 2021; 28:e202104194. [PMID: 34890088 DOI: 10.1002/chem.202104194] [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: 11/22/2021] [Indexed: 11/11/2022]
Abstract
Chemical reduction of pentacene (C22H14, 1) with Group 1 metals ranging from Li to Cs revealed that 1 readily undergoes a two-fold reduction to afford a doubly-reduced 12- anion in THF. With the help of 18-crown-6 ether used as a secondary coordinating agent, five π-complexes of 12- with different alkali metal counterions have been isolated and fully characterized. This series of complexes enables the first evaluation of alkali-metal ion binding patterns and structural changes of the 12- dianion based on the crystallographically confirmed examples. The difference in coordination of the smallest Li+ ion vs. heavier Group 1 congeners has been demonstrated. In addition, the use of benzo-15-crown-5 in the reaction of 1 with Na metal allowed the isolation of the unique solvent-separated ion product with a "naked" dianion, 12-. The detailed structural analyses of the series revealed the C-C bond alteration and core deformation of pentacene upon two-fold reduction and complexation. The negative charge localization at the central six-membered ring of 12- identified by theoretical calculations corroborates with the X-ray crystallographic results. Subsequent in-depth theoretical analysis provided a detailed description of changes in the electronic structure and aromaticity of pentacene upon reduction.
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Affiliation(s)
| | - Zheng Zhou
- University at Albany, Chemistry, UNITED STATES
| | - Zheng Wei
- University at Albany, Chemistry, UNITED STATES
| | - Shuyang Liu
- Illinois Institute of Technology, Chemistry, UNITED STATES
| | | | - Marina A Petrukhina
- University of Albany, Department of Chemistry, State University of New York, 1400 Washington Avenue, 12222, Albany, UNITED STATES
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5
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Mixed matrix membranes for rubidium-dependent recognition and separation: A synergistic recombination design based on electrostatic interactions. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117727] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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6
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Bayer J, Herberger J, Holz L, Winter RF, Huhn T. Geodesic-Planar Conjugates: Substituted Buckybowls-Synthesis, Photoluminescence and Electrochemistry. Chemistry 2020; 26:17546-17558. [PMID: 32846003 PMCID: PMC7839787 DOI: 10.1002/chem.202003605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 08/25/2020] [Indexed: 12/16/2022]
Abstract
C-C cross coupling products of bowl-shaped as-indaceno[3,2,1,8,7,6-pqrstuv]picene (Idpc) and different planar arenes and ethynyl-arenes were synthesized. Photoluminescence as well as electrochemical properties of all products were investigated and complemented by time-dependent quantum chemical calculations. UV/Vis spectroelectrochemistry investigations of the directly linked (Idpc)2 indicated the absence of any intramolecular charge-transfer transition of intermittently formed (Idpc)2 .- . All coupling products showed fluorescence. Ferrocene-1-yl-Idpc was structurally characterized by X-ray diffraction and is a rare example of a ferrocene-containing buckybowl exhibiting luminescence.
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Affiliation(s)
- Johannes Bayer
- Fachbereich ChemieUniversität KonstanzUniversitätsstr. 1078457KonstanzGermany
| | - Jan Herberger
- Fachbereich ChemieUniversität KonstanzUniversitätsstr. 1078457KonstanzGermany
| | - Lukas Holz
- Fachbereich ChemieUniversität KonstanzUniversitätsstr. 1078457KonstanzGermany
| | - Rainer F. Winter
- Fachbereich ChemieUniversität KonstanzUniversitätsstr. 1078457KonstanzGermany
| | - Thomas Huhn
- Fachbereich ChemieUniversität KonstanzUniversitätsstr. 1078457KonstanzGermany
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7
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Zhu Y, Zhou Z, Wei Z, Petrukhina MA. Two-Fold Reduction of Dibenzo[a,e]cyclooctatetraene with Group 1 Metals: From Lithium to Cesium. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00688] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yikun Zhu
- Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States
| | - Zheng Zhou
- Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States
| | - Zheng Wei
- Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States
| | - Marina A. Petrukhina
- Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States
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8
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Zhou Z, Fu L, Hu Y, Wang X, Wei Z, Narita A, Müllen K, Petrukhina MA. Compressing Double [7]Helicene by Successive Charging with Electrons. Angew Chem Int Ed Engl 2020; 59:15923-15927. [DOI: 10.1002/anie.202005852] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/22/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Zheng Zhou
- Department of Chemistry University at Albany State University of New York 1400 Washington Ave Albany NY 12222 USA
| | - Lin Fu
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Weijin Road 94 Tianjin 300071 China
| | - Yunbin Hu
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
- Department of Organic and Polymer Chemistry College of Chemistry and Chemical Engineering Central South University 932 Lushan S Rd Changsha Hunan 410083 China
| | - Xiao‐Ye Wang
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Weijin Road 94 Tianjin 300071 China
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Zheng Wei
- Department of Chemistry University at Albany State University of New York 1400 Washington Ave Albany NY 12222 USA
| | - Akimutsu Narita
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Marina A. Petrukhina
- Department of Chemistry University at Albany State University of New York 1400 Washington Ave Albany NY 12222 USA
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9
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Zhou Z, Fu L, Hu Y, Wang X, Wei Z, Narita A, Müllen K, Petrukhina MA. Compressing Double [7]Helicene by Successive Charging with Electrons. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005852] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zheng Zhou
- Department of Chemistry University at Albany State University of New York 1400 Washington Ave Albany NY 12222 USA
| | - Lin Fu
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Weijin Road 94 Tianjin 300071 China
| | - Yunbin Hu
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
- Department of Organic and Polymer Chemistry College of Chemistry and Chemical Engineering Central South University 932 Lushan S Rd Changsha Hunan 410083 China
| | - Xiao‐Ye Wang
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Weijin Road 94 Tianjin 300071 China
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Zheng Wei
- Department of Chemistry University at Albany State University of New York 1400 Washington Ave Albany NY 12222 USA
| | - Akimutsu Narita
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Marina A. Petrukhina
- Department of Chemistry University at Albany State University of New York 1400 Washington Ave Albany NY 12222 USA
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10
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Matsuo Y, Yu CG, Nakagawa T, Okada H, Ueno H, Sun TG, Zhong YW. Reduced Knoevenagel Reaction of Acetetracenylene-1,2-dione with Acceptor Units for Luminescent Tetracene Derivatives. J Org Chem 2019; 84:2339-2345. [PMID: 30656930 DOI: 10.1021/acs.joc.8b03083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Acetetracenylene-1,2-dione reacted with 3-ethylrhodanine in the presence of piperidine and Hantzsch ester via a Knoevenagel condensation-reduction sequence to give a tetracene-rhodanine adduct. This reduced Knoevenagel product exhibited magenta luminescence with a fluorescence quantum yield of φ = 0.34 and fluorescence lifetime of τ = 13.2 ns in toluene. Electrochemical studies and charge carrier transport measurements revealed ambipolar properties with hole and electron mobilities of 5.1 × 10-7 and 1.6 × 10-4 cm2/(V s), respectively.
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Affiliation(s)
- Yutaka Matsuo
- Hefei National Laboratory for Physical Sciences at Microscale, and Department of Chemistry, School of Chemistry and Materials Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , China.,Department of Mechanical Engineering, School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Chu-Guo Yu
- Hefei National Laboratory for Physical Sciences at Microscale, and Department of Chemistry, School of Chemistry and Materials Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , China
| | - Takafumi Nakagawa
- Department of Mechanical Engineering, School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Hiroshi Okada
- Department of Mechanical Engineering, School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Hiroshi Ueno
- School of Chemistry , Northeast Normal University , 5268 Renmin Street , Changchun , Jilin 130024 , China
| | - Tian-Ge Sun
- Key Laboratory of Photochemistry , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yu-Wu Zhong
- Key Laboratory of Photochemistry , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
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11
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Wombacher T, Goddard R, Lehmann CW, Schneider JJ. Complete charge separation provoked by full cation encapsulation in the radical mono- and di-anions of 5,6:11,12-di-o-phenylene-tetracene. Dalton Trans 2018; 47:10874-10883. [PMID: 29893388 DOI: 10.1039/c8dt01285g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report the synthesis and molecular structure of the mono- and dianionic aromatic molecules [(B15C5-κ5O)2K+](LDOPT˙-) (1) and [(B15C5-κ5O)2K+]2(LDOPT2-)THFsolv (2) derived from the parent aromatic polyhydrocarbon 5,6:11,12-di-o-phenylenetetracene (DOPT, LDOPT) by a controlled stepwise one and two electron chemical reduction. The effect of single and double electron charge transfer to a polycondensed aromatic hydrocarbon (PAH) without any disturbing influence of an associated metal cation has been demonstrated. This was achieved by fully sandwiching the cationic K+ counterions between two benzo-15-crown-5-ether (B15C5) ligands resulting in a fully encapsulating (κ10O) geometry which ensures a complete separation of the K+ counterions and the bare anionic PAH species [LDOPT˙-] and [LDOPT2-]. The structural changes accompanied by the stepwise reduction from LDOPT to [LDOPT˙-] to [LDOPT2-] are discussed and compared to earlier predictions based on density functional theory (DFT) as well as the results of previous studies of alkaline metal cationic PAH anion interactions of DOPT in which only a partial metal cation encapsulation has been achieved so far.
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Affiliation(s)
- Tobias Wombacher
- Fachbereich Chemie, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Alarich-Weiss Str. 12, 64287 Darmstadt, Germany.
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12
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Zhou Z, Spisak SN, Xu Q, Rogachev AY, Wei Z, Marcaccio M, Petrukhina MA. Fusing a Planar Group to a π-Bowl: Electronic and Molecular Structure, Aromaticity and Solid-State Packing of Naphthocorannulene and its Anions. Chemistry 2018; 24:3455-3463. [PMID: 29328530 DOI: 10.1002/chem.201705814] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Indexed: 01/08/2023]
Abstract
Molecular and electronic structure, reduction electron transfer and coordination abilities of a polycyclic aromatic hydrocarbon (PAH) having a planar naphtho-group fused to the corannulene bowl have been investigated for the first time using a combination of theoretical and experimental tools. A direct comparison of naphtho[2,3-a]corannulene (C28 H14 , 1) with parent corannulene (C20 H10 , 2) revealed the effect of framework topology change on electronic properties and aromaticity of 1. The presence of two reduction steps for 1 was predicted theoretically and confirmed experimentally. Two reversible one-electron reduction processes with the formal reduction potentials at -2.30 and -2.77 V versus Fc+/0 were detected by cyclic voltammetry (CV) measurements, demonstrating accessibility of the corresponding mono- and dianionic states of 1. The products of the singly and doubly reduced napththocorannulene were prepared using chemical reduction with Group 1 metals and isolated as sodium and rubidium salts. Their X-ray diffraction study revealed the formation of "naked" mono- and dianions crystallized as solvent-separated ion products with one or two sodium cations as [Na+ (18-crown-6)(THF)2 ][C28 H14- ] and [Na+ (18-crown-6)(THF)2 ]2 [C28 H142- ] (3⋅THF and 4⋅THF, respectively). The dianion of 1 was also isolated as a contact-ion complex with two rubidium countercations, [{Rb+ (18-crown-6)}2 (C28 H142- )] (5⋅THF). The structural consequences of adding one and two electrons to the carbon framework of 1 are compared for 3, 4 and 5. Changes in aromaticity and charge distribution stemming from the stepwise electron acquisition are discussed based on DFT computational study.
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Affiliation(s)
- Zheng Zhou
- Department of Chemistry, University at Albany, State University of New York, Albany, NY, 12222, USA
| | - Sarah N Spisak
- Department of Chemistry, University at Albany, State University of New York, Albany, NY, 12222, USA
| | - Qi Xu
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Andrey Yu Rogachev
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Zheng Wei
- Department of Chemistry, University at Albany, State University of New York, Albany, NY, 12222, USA
| | - Massimo Marcaccio
- Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Marina A Petrukhina
- Department of Chemistry, University at Albany, State University of New York, Albany, NY, 12222, USA
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13
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Wombacher T, Goddard R, Lehmann CW, Schneider JJ. Bowl shaped deformation in a planar aromatic polycycle upon reduction. Li and Na separated dianions of the aromatic polycycle 5,6:11,12-di-o-phenylene-tetracene. Dalton Trans 2017; 46:14122-14129. [DOI: 10.1039/c7dt03039h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduction of the PAH LDOPTwith lithium metal in DME results in a massive deformation in the resulting dianionic π-perimeter.
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Affiliation(s)
- T. Wombacher
- Fachbereich Chemie
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie
- 64287 Darmstadt
- Germany
| | - R. Goddard
- Max-Planck-Institut für Kohlenforschung
- 45470 Mülheim an der Ruhr
- Germany
| | - C. W. Lehmann
- Max-Planck-Institut für Kohlenforschung
- 45470 Mülheim an der Ruhr
- Germany
| | - J. J. Schneider
- Fachbereich Chemie
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie
- 64287 Darmstadt
- Germany
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