1
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Kopp SM, Redman AJ, Rončević I, Schröder L, Bogani L, Anderson HL, Timmel CR. Charge and Spin Transfer Dynamics in a Weakly Coupled Porphyrin Dimer. J Am Chem Soc 2024; 146:21476-21489. [PMID: 39042706 PMCID: PMC11311228 DOI: 10.1021/jacs.4c04186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
The dynamics of electron and spin transfer in the radical cation and photogenerated triplet states of a tetramethylbiphenyl-linked zinc-porphyrin dimer were investigated, so as to test the relevant parameters for the design of a single-molecule spin valve and the creation of a novel platform for the photogeneration of high-multiplicity spin states. We used a combination of multiple techniques, including variable-temperature continuous wave EPR, pulsed proton electron-nuclear double resonance (ENDOR), transient EPR, and optical spectroscopy. The conclusions are further supported by density functional theory (DFT) calculations and comparison to reference compounds. The low-temperature cw-EPR and room-temperature near-IR spectra of the dimer monocation demonstrate that the radical cation is spatially localized on one side of the dimer at any point in time, not coherently delocalized over both porphyrin units. The EPR spectra at 298 K reveal rapid hopping of the radical spin density between both sites of the dimer via reversible intramolecular electron transfer. The hyperfine interactions are modulated by electron transfer and can be quantified using ENDOR spectroscopy. This allowed simulation of the variable-temperature cw-EPR spectra with a two-site exchange model and provided information on the temperature-dependence of the electron transfer rate. The electron transfer rates range from about 10.0 MHz at 200 K to about 53.9 MHz at 298 K. The activation enthalpies Δ‡H of the electron transfer were determined as Δ‡H = 9.55 kJ mol-1 and Δ‡H = 5.67 kJ mol-1 in a 1:1:1 solvent mixture of CD2Cl2/toluene-d8/THF-d8 and in 2-methyltetrahydrofuran, respectively, consistent with a Robin-Day class II mixed valence compound. These results indicate that the interporphyrin electronic coupling in a tetramethylbiphenyl-linked porphyrin dimer is suitable for the backbone of a single-molecule spin valve. Investigation of the spin density distribution of the photogenerated triplet state of the Zn-porphyrin dimer reveals localization of the triplet spin density on a nanosecond time scale on one-half of the dimer at 20 K in 2-methyltetrahydrofuran and at 250 K in a polyvinylcarbazole film. This establishes the porphyrin dimer as a molecular platform for the formation of a localized, photogenerated triplet state on one porphyrin unit that is coupled to a second redox-active, ground-state porphyrin unit, which can be explored for the formation of high-multiplicity spin states.
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Affiliation(s)
- Sebastian M Kopp
- Centre for Advanced Electron Spin Resonance, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, U.K
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, U.K
| | - Ashley J Redman
- Centre for Advanced Electron Spin Resonance, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, U.K
| | - Igor Rončević
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, U.K
| | - Lisa Schröder
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, U.K
| | - Lapo Bogani
- Department of Materials, University of Oxford, Oxford, OX1 3PH, U.K
| | - Harry L Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, U.K
| | - Christiane R Timmel
- Centre for Advanced Electron Spin Resonance, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, U.K
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2
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Riera Aroche R, Ortiz García YM, Martínez Arellano MA, Riera Leal A. DNA as a perfect quantum computer based on the quantum physics principles. Sci Rep 2024; 14:11636. [PMID: 38773193 PMCID: PMC11109248 DOI: 10.1038/s41598-024-62539-5] [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: 02/01/2024] [Accepted: 05/17/2024] [Indexed: 05/23/2024] Open
Abstract
DNA is a complex multi-resolution molecule whose theoretical study is a challenge. Its intrinsic multiscale nature requires chemistry and quantum physics to understand the structure and quantum informatics to explain its operation as a perfect quantum computer. Here, we present theoretical results of DNA that allow a better description of its structure and the operation process in the transmission, coding, and decoding of genetic information. Aromaticity is explained by the oscillatory resonant quantum state of correlated electron and hole pairs due to the quantized molecular vibrational energy acting as an attractive force. The correlated pairs form a supercurrent in the nitrogenous bases in a single band π -molecular orbital ( π -MO). The MO wave function ( Φ ) is assumed to be the linear combination of the n constituent atomic orbitals. The central Hydrogen bond between Adenine (A) and Thymine (T) or Guanine (G) and Cytosine (C) functions like an ideal Josephson Junction. The approach of a Josephson Effect between two superconductors is correctly described, as well as the condensation of the nitrogenous bases to obtain the two entangled quantum states that form the qubit. Combining the quantum state of the composite system with the classical information, RNA polymerase teleports one of the four Bell states. DNA is a perfect quantum computer.
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Affiliation(s)
- R Riera Aroche
- Department of Research in Physics, University of Sonora, Hermosillo, Sonora, Mexico
- Research and Higher Education Center of UNEPROP, Hermosillo, Sonora, Mexico
| | - Y M Ortiz García
- Research Institute of Dentistry, University of Guadalajara, Guadalajara Jalisco, Mexico
- Research and Higher Education Center of UNEPROP, Hermosillo, Sonora, Mexico
| | - M A Martínez Arellano
- General Hospital of the State of Sonora, Boulevar José María Escrivá de Balaguer 157, Colonia Villa del Palmar, C.P. 83105, Hermosillo, Sonora, Mexico
- Research and Higher Education Center of UNEPROP, Hermosillo, Sonora, Mexico
| | - A Riera Leal
- General Hospital of the State of Sonora, Boulevar José María Escrivá de Balaguer 157, Colonia Villa del Palmar, C.P. 83105, Hermosillo, Sonora, Mexico.
- Research and Higher Education Center of UNEPROP, Hermosillo, Sonora, Mexico.
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3
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Qin Q, Hebert AJ, Cruz RL, Mague JT. Charge Transfer Complexes of New Sulfur- and Selenium-Rich Aromatic Donors. ACS OMEGA 2022; 7:23362-23367. [PMID: 35847256 PMCID: PMC9281308 DOI: 10.1021/acsomega.2c01549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two new sulfur- and selenium-rich pentacyclic aromatic compounds were prepared by short chemical syntheses. The two donors readily formed charge transfer (CT) complexes upon reaction with antimony pentachloride or tris(4-bromophenyl)ammoniumyl hexachloroantimonate. The X-ray structures of the heterocyclic donors and their CT complexes were determined. The donors flattened considerably upon CT complex formation.
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Affiliation(s)
- Qian Qin
- Department
of Chemistry and Biochemistry, Loyola University, New Orleans, Louisiana 70118, United States
| | - André J. Hebert
- Department
of Chemistry and Biochemistry, Loyola University, New Orleans, Louisiana 70118, United States
| | - Ricardo L. Cruz
- Department
of Chemistry and Biochemistry, Loyola University, New Orleans, Louisiana 70118, United States
| | - Joel T. Mague
- Department
of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
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4
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Gadjieva NA, Szirmai P, Sági O, Alemany P, Bartholomew AK, Stone I, Conejeros S, Paley DW, Hernández Sánchez R, Fowler B, Peurifoy SR, Náfrádi B, Forró L, Roy X, Batail P, Canadell E, Steigerwald ML, Nuckolls C. Intermolecular Resonance Correlates Electron Pairs Down a Supermolecular Chain: Antiferromagnetism in K-Doped p-Terphenyl. J Am Chem Soc 2020; 142:20624-20630. [PMID: 33236891 DOI: 10.1021/jacs.0c05606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Recent interest in potassium-doped p-terphenyl has been fueled by reports of superconductivity at Tc values surprisingly high for organic compounds. Despite these interesting properties, studies of the structure-function relationships within these materials have been scarce. Here, we isolate a phase-pure crystal of potassium-doped p-terphenyl: [K(222)]2[p-terphenyl3]. Emerging antiferromagnetism in the anisotropic structure is studied in depth by magnetometry and electron spin resonance. Combining these experimental results with density functional theory calculations, we describe the antiferromagnetic coupling in this system that occurs in all 3 crystallographic directions. The strongest coupling was found along the ends of the terphenyls, where the additional electron on neighboring p-terphenyls antiferromagnetically couple. This delocalized bonding interaction is reminiscent of the doubly degenerate resonance structure depiction of polyacetylene. These findings hint toward magnetic fluctuation-induced superconductivity in potassium-doped p-terphenyl, which has a close analogy with high Tc cuprate superconductors. The new approach described here is very versatile as shown by the preparation of two additional salts through systematic changing of the building blocks.
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Affiliation(s)
- Natalia A Gadjieva
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | | | | | - Pere Alemany
- Departament de Ciència de Materials i Química Física and Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franquès 1, Barcelona 08028, Spain
| | | | - Ilana Stone
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Sergio Conejeros
- Departamento de Química, Universidad Católica del Norte, Avenida Angamos 0610, Antofagasta 124000, Chile
| | - Daniel W Paley
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Raúl Hernández Sánchez
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Brandon Fowler
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Samuel R Peurifoy
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | | | | | - Xavier Roy
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Patrick Batail
- Department of Chemistry, Columbia University, New York, New York 10027, United States.,MOLTECH-Anjou, UMR 6200, CNRS, Universite d'Angers, 49045 Angers, France
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra 08193, Spain
| | - Michael L Steigerwald
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Colin Nuckolls
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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5
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Yoshida Y, Kitagawa H. One-dimensional electronic systems: metal-chain complexes and organic conductors. Chem Commun (Camb) 2020; 56:10100-10112. [PMID: 32705097 DOI: 10.1039/d0cc04124f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-dimensional (1D) metal-chain complexes and organic conductors show many similarities as well as striking differences in structural and electronic properties, although constituent elements and orbitals that contribute to charge transfer in these systems are quite different. In this review, we highlighted the structural and electronic properties of neutral MMX-chain complexes (M = Pt2+/3+, X = I-) and tetramethyltetrathiafulvalene-based cation radical salts as typical examples of each group while comparing them with each other. This review primarily aims to construct a coherent body of knowledge of 1D electronic materials that might have been separately investigated. We have proposed future directions for the exploration of new and more advanced electronic materials not only having 1D character, but also residing in the dimensional crossover regime.
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Affiliation(s)
- Yukihiro Yoshida
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Hiroshi Kitagawa
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
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6
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Zhang D, Hou LK, Zhang Q, He JW, Feng HJ, Würthner F, Yang XJ, Wu B. Anion-Coordination-Assisted Assembly of Supramolecular Charge-Transfer Complexes Based on Tris(urea) Ligands. Chemistry 2020; 26:1414-1421. [PMID: 31762095 DOI: 10.1002/chem.201905021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 11/19/2019] [Indexed: 01/04/2023]
Abstract
Charge-transfer (CT) complexes, formed by noncovalent bonding between electron-rich (donor, D) and electron-deficient (acceptor, A) molecules (or moieties) have attracted considerable attention due to their fascinating structures and potential applications. Herein, we demonstrate that anion coordination is a promising strategy to promote CT complex formation between anion-binding, electron-rich tris(urea) donor ligands (D) and electron-deficient viologen cation acceptors (A), which form co-crystals featuring infinite ⋅⋅⋅DADA⋅⋅⋅ or discrete (circular DADA or three-decker DAD) π-stacking interactions. These CT complexes were studied by X-ray diffraction, UV/Vis spectroscopy, electric conductivity measurements, charge displacement curve (CDC) calculations, and DFT computations.
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Affiliation(s)
- Dan Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of, the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Le-Kai Hou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of, the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Qiang Zhang
- School of Physics, Northwest University, Xi'an, 710127, P. R. China
| | - Jia-Wei He
- School of Physics, Northwest University, Xi'an, 710127, P. R. China
| | - Hong-Jian Feng
- School of Physics, Northwest University, Xi'an, 710127, P. R. China
| | - Frank Würthner
- Center for Nanosystems Chemistry & Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Xiao-Juan Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of, the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Biao Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of, the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
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7
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Santos IC, Gama V, Rabaça S, Veiros LF, Nogueira F, Paixão JA, Almeida M. Structural diversity in conducting bilayer salts (CNB-EDT-TTF) 4A. CrystEngComm 2020. [DOI: 10.1039/d0ce01433h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The family of recently described salts based on the electron donor CNB-EDT-TTF and different anions A, with general formula (CNB-EDT-TTF)4A, constitutes an unprecedented type of molecular conductor based on a bilayer structure of the donors.
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Affiliation(s)
- Isabel C. Santos
- C2TN and DECN
- IST
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Vasco Gama
- C2TN and DECN
- IST
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Sandra Rabaça
- C2TN and DECN
- IST
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Luís F. Veiros
- CQE and DEQ
- IST
- Universidade de Lisboa
- 1049-001, Lisboa
- Portugal
| | - Fernando Nogueira
- CFisUC
- Departamento de Física – Universidade de Coimbra
- Coimbra
- Portugal
| | - José A. Paixão
- CFisUC
- Departamento de Física – Universidade de Coimbra
- Coimbra
- Portugal
| | - Manuel Almeida
- C2TN and DECN
- IST
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
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8
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Qin Q, Mague JT, Gould HE, Vasquez SE, Heyer AE. Crystal structures of two charge-transfer com-plexes of benzo[1,2- c:3,4- c':5,6- c'']tri-thio-phene ( D 3h -BTT). Acta Crystallogr E Crystallogr Commun 2019; 75:1573-1577. [PMID: 31636997 PMCID: PMC6775755 DOI: 10.1107/s2056989019013161] [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: 08/09/2019] [Accepted: 09/24/2019] [Indexed: 11/30/2022]
Abstract
Benzo[1,2-c:3,4-c':5,6-c'']tri-thio-phene (D 3h -BTT) is an easily prepared electron donor that readily forms charge-transfer complexes with organic acceptors. We report here two crystal structures of its charge-transfer complexes with 7,7,8,8-tetra-cyano-quinodi-methane (TCNQ) and buckminsterfullerene (C60). The D 3h -BTT·TCNQ complex, C12H6S3·C12H4N4, crystallizes with mixed layers of donors and acceptors, with an estimated degree of charge transfer at 0.09 e. In the D 3h -BTT·C60·toluene complex, C12H6S3·C60·C7H8, the central ring of BTT is 'squeezed' by the C60 mol-ecules from both faces. However, the degree of charge transfer is low. The C60 unit is disordered over two sites in a 0.766 (3):0.234 (3) ratio and was refined as a two-component inversion twin.
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Affiliation(s)
- Qian Qin
- Department of Chemistry and Biochemistry, Loyola University, New Orleans, LA, 70118, USA
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Haley E. Gould
- Department of Chemistry and Biochemistry, Loyola University, New Orleans, LA, 70118, USA
| | - Samuel E. Vasquez
- Department of Chemistry and Biochemistry, Loyola University, New Orleans, LA, 70118, USA
| | - Anthony E. Heyer
- Department of Chemistry and Biochemistry, Loyola University, New Orleans, LA, 70118, USA
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9
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Cui Y, Yan J, Chen Z, Zhang J, Zou Y, Sun Y, Xu W, Zhu D. [Cu 3(C 6Se 6)] n : The First Highly Conductive 2D π-d Conjugated Coordination Polymer Based on Benzenehexaselenolate. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1802235. [PMID: 31065526 PMCID: PMC6498113 DOI: 10.1002/advs.201802235] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/02/2019] [Indexed: 05/21/2023]
Abstract
Nanocrystals of a 2D π-d conjugated copper bis(diselenolene) coordination polymer (Cu-BHS, BHS = benzenehexaselenolate) are synthesized via a simple homogeneous reaction between cupric ions and benzenehexaselenol (H6BHS). Its 2D extended hexagonal lattice is confirmed by powder X-ray diffraction, and further characterized by scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The electrical conductivity measured on compressed powder sample reaches 110 S cm-1 at 300 K, which is among the highest value ever reported for coordination polymers. Furthermore, the intrinsic metallic characteristics of Cu-BHS are confirmed by ultraviolet photoelectron spectroscopy and band structure calculation.
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Affiliation(s)
- Yutao Cui
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemistry ScienceUniversity of Chinese Academy of SciencesBeijing100049China
| | - Jie Yan
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemistry ScienceUniversity of Chinese Academy of SciencesBeijing100049China
| | - Zhijun Chen
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemistry ScienceUniversity of Chinese Academy of SciencesBeijing100049China
| | - Jiajia Zhang
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemistry ScienceUniversity of Chinese Academy of SciencesBeijing100049China
| | - Ye Zou
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemistry ScienceUniversity of Chinese Academy of SciencesBeijing100049China
| | - Yimeng Sun
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemistry ScienceUniversity of Chinese Academy of SciencesBeijing100049China
| | - Wei Xu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemistry ScienceUniversity of Chinese Academy of SciencesBeijing100049China
| | - Daoben Zhu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemistry ScienceUniversity of Chinese Academy of SciencesBeijing100049China
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10
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Sako K, Hasegawa T, Onda H, Shiotsuka M, Watanabe M, Shinmyozu T, Tojo S, Fujitsuka M, Majima T, Hirao Y, Kubo T, Iwanaga T, Toyota S, Takemura H. Donor-Donor'-Acceptor Triads Based on [3.3]Paracyclophane with a 1,4-Dithiafulvene Donor and a Cyanomethylene Acceptor: Synthesis, Structure, and Electrochemical and Photophysical Properties. Chemistry 2018; 24:11407-11416. [PMID: 29845675 DOI: 10.1002/chem.201801774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Indexed: 11/07/2022]
Abstract
Donor-donor'-acceptor triads (1, 2), based on [3.3]paracyclophane ([3.3]PCP) as a bridge, with electron-donating properties (D') using 1,4-dithiafulvene (DTF; TTF half unit) as a donor and dicyanomethylene (DCM; TCNE half unit) or an ethoxycarbonyl-cyanomethylene (ECM) as an acceptor were designed and synthesized. The pulse radiolysis study of 1 a in 1,2-dichloroethane allowed the clear assignment of the absorption bands of the DTF radical cation (1 a.+ ), whereas the absorption bands due to the DCM radical anion could not be observed by γ-ray radiolysis in 2-methyltetrahydrofuran rigid glass at 77 K. Electrochemical oxidation of 1 a first generates the DTF radical cation (1 a.+ ), the absorption bands of which are in agreement with those observed by a pulse radiolysis study, followed by dication (1 a2+ ). The ESR spectrum of 1 a.+ showed a symmetrical signal with fine structure and an ESR simulation predicted that the spin of 1 a.+ is delocalized over S and C atoms of the DTF moiety and the central C atom of the trimethylene bridge bearing the DTF moiety. Pulse radiolysis, ESR, and electrochemical studies indicate that the DTF radical cation of 1 a.+ is more stable than that of 6.+ , and the latter shows a strong tendency to dimerize. This result indicates that the [3.3]PCP moiety as a bridge can stabilize the DTF radical cation more than the 1,3-diphenylpropane moiety because of kinetic stability due to its rigid structure and the weak electronic interaction of DTF and DCM moieties through [3.3]PCP.
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Affiliation(s)
- Katsuya Sako
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Tomoya Hasegawa
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Hiroyuki Onda
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Michito Shiotsuka
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Motonori Watanabe
- International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Teruo Shinmyozu
- Department of Chemistry, National (Taiwan) University, No. 1, Section 4, Roosevelt Rd, Taipei, 10617, Taiwan
| | - Sachiko Tojo
- The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan
| | - Tetsuro Majima
- The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan
| | - Yasukazu Hirao
- Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama 1-1, Toyonaka, Osaka, 560-0043, Japan
| | - Takashi Kubo
- Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama 1-1, Toyonaka, Osaka, 560-0043, Japan
| | - Tetsuo Iwanaga
- Department of Chemistry, Faculty of Science, Okayama University of Science, Ridaicho 1-1, Kita-ku, Okayama, 700-0005, Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo, 152-8550, Japan
| | - Hiroyuki Takemura
- Department of Chemical and Biological Science, Faculty of Science, Japan Women's University, Mejirodai 2-8-1, Bunkyo-ku, Tokyo, 112-8681, Japan
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11
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12
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Oshita H, Kikuchi M, Mieda K, Ogura T, Yoshimura T, Tani F, Yajima T, Abe H, Mori S, Shimazaki Y. Characterization of Group 10-Metal-p
-Substituted Phenoxyl Radical Complexes with Schiff Base Ligands. ChemistrySelect 2017. [DOI: 10.1002/slct.201701986] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hiromi Oshita
- Graduate School of Science and Engineering; Ibaraki University; Mito 310-8512 Japan
| | - Misa Kikuchi
- College of Science; Ibaraki University; Mito 310-8512 Japan
| | - Kaoru Mieda
- Picobiology Institute; Graduate School of Life Science; University of Hyogo, Sayo; Hyogo 679-5184 Japan
| | - Takashi Ogura
- Picobiology Institute; Graduate School of Life Science; University of Hyogo, Sayo; Hyogo 679-5184 Japan
| | - Takayoshi Yoshimura
- Graduate School of Science and Engineering; Ibaraki University; Mito 310-8512 Japan
| | - Fumito Tani
- Institute for Materials Chemistry and Engineering; Kyushu University, Nishi-ku; Fukuoka 819-0395 Japan
| | - Tatsuo Yajima
- Faculty of Chemistry; Materials and Bioengineering; Kansai University, Suita; Osaka 564-8680 Japan
| | - Hitoshi Abe
- Photon Factory (PF); Institute of Materials Structure Science (IMSS); High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba; Ibaraki 305-0801 Japan
| | - Seiji Mori
- Graduate School of Science and Engineering; Ibaraki University; Mito 310-8512 Japan
- College of Science; Ibaraki University; Mito 310-8512 Japan
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13
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Qin Q, Mague JT, Moses KZ, Carnicom EM, Cava RJ. Structure and characterization of charge transfer complexes of benzo[1,2-b:3,4-b′:5,6-b′′]trithiophene [C3h-BTT]. CrystEngComm 2017. [DOI: 10.1039/c7ce01471f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Four charge-transfer complexes of C3h-BTT (2) with the organic acceptors TCNQ, F4TCNQ, chloranil, and fluoranil were prepared and crystallographically characterized.
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Affiliation(s)
- Qian Qin
- Department of Chemistry and Biochemistry
- Loyola University
- New Orleans
- USA
| | - Joel T. Mague
- Department of Chemistry
- Tulane University
- New Orleans
- USA
| | - Khadija Z. Moses
- Department of Chemistry and Biochemistry
- Loyola University
- New Orleans
- USA
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14
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Konarev DV, Khasanov SS, Ishikawa M, Yudanova EI, Shevchun AF, Mikhailov MS, Stuzhin PA, Otsuka A, Yamochi H, Saito G, Lyubovskaya RN. Metallic conductivity versus charge disproportionation in C60complexes with noninteger average charges on fullerene. ChemistrySelect 2016. [DOI: 10.1002/slct.201500021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dmitri V. Konarev
- Institute of Problems of Chemical Physics RAS; Chernogolovka, Moscow region 142432 Russia
| | - Salavat S. Khasanov
- Institute of Solid State Physics RAS; Chernogolovka, Moscow region 142432 Russia
| | - Manabu Ishikawa
- Research Center for Low Temperature and Materials Sciences; Kyoto University, Sakyo-ku; Kyoto 606-8501 Japan
| | - Evgeniya I. Yudanova
- Institute of Problems of Chemical Physics RAS; Chernogolovka, Moscow region 142432 Russia
| | - Artem F. Shevchun
- Institute of Solid State Physics RAS; Chernogolovka, Moscow region 142432 Russia
| | - Maksim S. Mikhailov
- Research Institute of Macroheterocycles; Ivanovo State University of Chemistry and Technology; Ivanovo 153000 Russia
| | - Pavel A. Stuzhin
- Research Institute of Macroheterocycles; Ivanovo State University of Chemistry and Technology; Ivanovo 153000 Russia
| | - Akihiro Otsuka
- Research Center for Low Temperature and Materials Sciences; Kyoto University, Sakyo-ku; Kyoto 606-8501 Japan
| | - Hideki Yamochi
- Research Center for Low Temperature and Materials Sciences; Kyoto University, Sakyo-ku; Kyoto 606-8501 Japan
| | - Gunzi Saito
- Faculty of Agriculture, Meijo University; 1-501 Shiogamaguchi, Tempaku-ku Nagoya 468-8502 Japan
- Toyota Physical and Chemical Research Institute; 41-1 Yokomichi, Nagakute Aichi 480-1192 Japan
| | - Rimma N. Lyubovskaya
- Institute of Problems of Chemical Physics RAS; Chernogolovka, Moscow region 142432 Russia
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15
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Organic–inorganic hybrids: From magnetic perovskite metal(II) halides to multifunctional metal(II) phosphonates. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.10.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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16
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Fuertes P, García-Valverde M, Pascual R, Rodríguez T, Rojo J, García-Calvo J, Calvo P, Cuevas JV, García-Herbosa G, Torroba T. Structural Conformers of (1,3-Dithiol-2-ylidene)ethanethioamides: The Balance between Thioamide Rotation and Preservation of Classical Sulfur-Sulfur Hypervalent Bonds. J Org Chem 2014; 80:30-9. [PMID: 25414966 DOI: 10.1021/jo501473z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The reaction of N-(2-phthalimidoethyl)-N-alkylisopropylamines and S2Cl2 gave 4-N-(2-phthalimidoethyl)-N-alkylamino-5-chloro-1,2-dithiol-3-thiones that quantitatively cycloadded to dimethyl or diethyl acetylenedicarboxylate to give stable thioacid chlorides, which in turn reacted with one equivalent of aniline or a thiole to give thioanilides or a dithioester. Several compounds of this series showed atropisomers that were studied by a combination of dynamic NMR, simulation of the signals, conformational analysis by DFT methods, and single crystal X-ray diffraction, showing a good correlation between the theoretical calculations, the experimental values of energies, and the preferred conformations in the solid state. The steric hindering of the crowded substitution at the central amine group was found to be the reason for the presence of permanent atropisomers in this series of compounds and the cause of a unique disposition of the thioxo group at close-to-right angles with respect to the plane defined by the 1,3-dithiole ring in the dithiafulvene derivatives, thus breaking the sulfur-sulfur hypervalent bond that is always found in this kind of compounds.
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Affiliation(s)
- Pedro Fuertes
- Department of Chemistry, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain
| | - María García-Valverde
- Department of Chemistry, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain
| | - Ricardo Pascual
- Department of Chemistry, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain
| | - Teresa Rodríguez
- Department of Chemistry, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain
| | - Josefa Rojo
- Department of Chemistry, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain
| | - José García-Calvo
- Department of Chemistry, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain
| | - Patricia Calvo
- Department of Chemistry, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain
| | - José V Cuevas
- Department of Chemistry, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain
| | | | - Tomás Torroba
- Department of Chemistry, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain
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17
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Konarev DV, Khasanov SS, Otsuka A, Maesato M, Uruichi M, Yakushi K, Shevchun AF, Yamochi H, Saito G, Lyubovskaya RN. Metallic and Mott insulating spin-frustrated antiferromagnetic states in ionic fullerene complexes with a two-dimensional hexagonal C60·- packing motif. Chemistry 2014; 20:7268-77. [PMID: 24838699 DOI: 10.1002/chem.201304763] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 03/29/2014] [Indexed: 11/05/2022]
Abstract
(MDABCO(+))(C60(·-))(TPC) (1), in which MDABCO(+) is N-methyldiazabicyclooctanium, TPC is triptycene, and both have threefold symmetry, is a rare example of a fullerene-based quasi-2D metal and contains closely packed hexagonal fullerene layers with interfullerene center-to-center distances of 10.07 Å at 300 K. Evidence for the metallic nature of 1 was obtained by optical and microwave conductivity measurements on single crystals. The metal is characterized by a nontypical Drude response and relatively large optical mass (m*/m0 =6.7). The latter indicates a narrow-band nature, which is consistent with the calculated bandwidth of 0.10-0.15 eV. The coexistence of metallic and antiferromagnetic nonmetallic 2D layers was observed in 1 above 200-230 K. It was assumed that the nonmetallic layers undergo a transition to the metallic state below 200 K due to ordering of the fullerene and cationic sublattices. New layered complex (MQ(+))(C60(·-))(TPC) (2) with a hexagonal arrangement of C60(·-) was obtained by increasing the interfullerene distance with the bulkier N-methylquinuclidinium cations (MQ(+)) having threefold symmetry. The structure of 2 is characterized by increased interfullerene center-to-center distances in the layers (10.124, 10.155, and 10.177 Å at 250 K). Unit-cell doubling parallel to the 2D layer (along the b axis) was observed at low temperatures. In contrast to metallic 1, 2 exhibits a nonmetallic spin-frustrated state with an antiferromagnetic interaction of spins (the Weiss temperature is -27 K) and no magnetic ordering down to 1.9 K. It was supposed that the expanded interfullerene distances in the triangular arrangement decrease the bandwidth and suppress metallic conductivity in 2, and thus a Mott-Hubbard insulating state with antiferromagnetically frustrated spins results.
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Affiliation(s)
- Dmitri V Konarev
- Institute of Problems of Chemical Physics RAS, Chernogolovka, Moscow region, 142432 (Russia).
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18
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Yoshida Y, Maesato M, Kumagai Y, Mizuno M, Isomura K, Kishida H, Izumi M, Kubozono Y, Otsuka A, Yamochi H, Saito G, Kirakci K, Cordier S, Perrin C. Isotropic Three‐Dimensional Molecular Conductor Based on the Coronene Radical Cation. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201400119] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yukihiro Yoshida
- Faculty of Agriculture, Meijo University, Shiogamaguchi 1‐501 Tempaku‐ku, Nagoya 468‐8502, Japan http://saitolab.meijo‐u.ac.jp
| | - Mitsuhiko Maesato
- Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo‐ku, Kyoto 606‐8502, Japan
| | - Yoshihide Kumagai
- Department of Chemistry, Graduate School of Natural Science & Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920‐1192, Japan
| | - Motohiro Mizuno
- Department of Chemistry, Graduate School of Natural Science & Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920‐1192, Japan
| | - Kazuhide Isomura
- Department of Applied Physics, Nagoya University, Furo‐cho, Chikusa‐ku, Nagoya 464‐8603, Japan
| | - Hideo Kishida
- Department of Applied Physics, Nagoya University, Furo‐cho, Chikusa‐ku, Nagoya 464‐8603, Japan
| | - Masanari Izumi
- Research Laboratory for Surface Science, Okayama University, Okayama 700‐8530, Japan
| | - Yoshihiro Kubozono
- Research Laboratory for Surface Science, Okayama University, Okayama 700‐8530, Japan
| | - Akihiro Otsuka
- Research Center for Low Temperature and Materials Sciences, Kyoto University, Sakyo‐ku, Kyoto 606‐8501, Japan
| | - Hideki Yamochi
- Research Center for Low Temperature and Materials Sciences, Kyoto University, Sakyo‐ku, Kyoto 606‐8501, Japan
| | - Gunzi Saito
- Faculty of Agriculture, Meijo University, Shiogamaguchi 1‐501 Tempaku‐ku, Nagoya 468‐8502, Japan http://saitolab.meijo‐u.ac.jp
| | - Kaplan Kirakci
- Institute of Inorganic Chemistry of the AS CR, v.v.i, Husinec‐řež 1001, 25068 Řež, Czech Republic
| | - Stéphane Cordier
- Institut des Sciences Chimiques de Rennes, UMR CNRS 6226, Université de Rennes 1, Avenue du Général Leclerc, 35042 Rennes cedex, France
| | - Christiane Perrin
- Institut des Sciences Chimiques de Rennes, UMR CNRS 6226, Université de Rennes 1, Avenue du Général Leclerc, 35042 Rennes cedex, France
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19
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Fuertes P, García-Valverde M, Cuevas JV, Díaz de Greñu B, Rodríguez T, Rojo J, Torroba T. Synthesis of pyrrolidine-fused 1,3-dithiolane oligomers by the cycloaddition of polycyclic dithiolethiones to maleimides and evaluation as mercury(II) indicators. J Org Chem 2014; 79:2213-25. [PMID: 24511994 DOI: 10.1021/jo500076c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The scandium triflate-catalyzed cycloaddition reaction of polycyclic 1,2-dithiolethiones to maleimides is described. The reaction constitutes an easy approach to linear as well as branched oligomeric cis-fused dihydro[1,3]dithiolo[4,5-c]pyrrole-4,6-dione rings interconnected by 3,5-diylidenethiomorpholine-2,6-dithione or ylidene-6-thioxo[1,2]dithiolo[3,4-b][1,4]thiazin-3-one groups. The presence of highly colored, highly polarized push-pull α,β-unsaturated thione groups in their structures make these compounds sensitive to the presence of mercury(II) cation in organic or mixed organic/aqueous solvents.
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Affiliation(s)
- Pedro Fuertes
- Department of Chemistry, Faculty of Sciences, University of Burgos , 09001 Burgos, Spain
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20
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Awaga K, Nomura K, Kishida H, Fujita W, Yoshikawa H, Matsushita MM, Hu L, Shuku Y, Suizu R. Electron-Transfer Processes in Highly-Correlated Electron Systems of Thiazyl Radicals. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20130248] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Kunio Awaga
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
- CREST, Nagoya University
| | - Kenji Nomura
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Hideo Kishida
- Department of Applied Physics, Graduate School of Engineering, Nagoya University
| | - Wataru Fujita
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Hirofumi Yoshikawa
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Michio M. Matsushita
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Laigui Hu
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Yoshiaki Shuku
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Rie Suizu
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
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21
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Shuku Y, Awaga K. Transition metal complexes and radical anion salts of 1,10-phenanthroline derivatives annulated with a 1,2,5-tiadiazole and 1,2,5-tiadiazole 1,1-dioxide moiety: multidimensional crystal structures and various magnetic properties. Molecules 2014; 19:609-40. [PMID: 24402196 PMCID: PMC6271449 DOI: 10.3390/molecules19010609] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 12/26/2013] [Accepted: 12/27/2013] [Indexed: 11/17/2022] Open
Abstract
Advances in the molecular variety and the elucidation of the physical properties of 1,10-phenanthroline annulated with 1,2,5-thiadiazole and 1,2,5-thiadiazole 1,1-dioxide moieties have been achieved, and are described herein. A 1,2,5-thiadiazole compound, [1,2,5]thiadiazolo[3,4-f][1,10]phenanthroline (tdap), was used as a ligand to create multidimensional network structures based on S•••S and S•••N intermolecular interactions. A 1,2,5-thiadiazole 1,1-dioxide compound, [1,2,5] thiadiazolo[3,4-f][1,10]phenanthroline, 1,1-dioxide (tdapO2), was designed to create a stable radical anion, as well as good network structures. Single crystal X-ray structure analyses revealed that transition metal complexes of tdap, and radical anion salts of tdapO2 formed multidimensional network structures, as expected. Two kinds of tdap iron complexes, namely [Fe(tdap)2(NCS)2] and [Fe(tdap)2(NCS)2]•MeCN exhibited spin crossover transitions, and their transition temperatures showed a difference of 150 K, despite their similar molecular structures. Magnetic measurements for the tdapO2 radical anion salts revealed that the magnetic coupling constants between neighboring radical species vary from strongly antiferromagnetic (J = −320 K) to ferromagnetic (J = 24 K), reflecting the differences in their π overlap motifs.
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Affiliation(s)
- Yoshiaki Shuku
- Department of Chemistry & Research Center for Materials Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan.
| | - Kunio Awaga
- Department of Chemistry & Research Center for Materials Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan.
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22
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Concepts relating magnetic interactions, intertwined electronic orders, and strongly correlated superconductivity. Proc Natl Acad Sci U S A 2013; 110:17623-30. [PMID: 24114268 DOI: 10.1073/pnas.1316512110] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Unconventional superconductivity (SC) is said to occur when Cooper pair formation is dominated by repulsive electron-electron interactions, so that the symmetry of the pair wave function is other than an isotropic s-wave. The strong, on-site, repulsive electron-electron interactions that are the proximate cause of such SC are more typically drivers of commensurate magnetism. Indeed, it is the suppression of commensurate antiferromagnetism (AF) that usually allows this type of unconventional superconductivity to emerge. Importantly, however, intervening between these AF and SC phases, intertwined electronic ordered phases (IP) of an unexpected nature are frequently discovered. For this reason, it has been extremely difficult to distinguish the microscopic essence of the correlated superconductivity from the often spectacular phenomenology of the IPs. Here we introduce a model conceptual framework within which to understand the relationship between AF electron-electron interactions, IPs, and correlated SC. We demonstrate its effectiveness in simultaneously explaining the consequences of AF interactions for the copper-based, iron-based, and heavy-fermion superconductors, as well as for their quite distinct IPs.
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23
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Morita Y, Murata T, Nakasuji K. Cooperation of Hydrogen-Bond and Charge-Transfer Interactions in Molecular Complexes in the Solid State. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2013. [DOI: 10.1246/bcsj.20120241] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yasushi Morita
- Department of Chemistry, Graduate School of Science, Osaka University
| | - Tsuyoshi Murata
- Department of Chemistry, Graduate School of Science, Osaka University
| | - Kazuhiro Nakasuji
- Department of Chemistry, Graduate School of Science, Osaka University
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24
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Kusamoto T, Takada K, Sakamoto R, Kume S, Nishihara H. Ferrocene-dithiolene hybrids: control of strong donor-acceptor electronic communication to reverse the charge transfer direction. Inorg Chem 2012; 51:12102-13. [PMID: 22646291 DOI: 10.1021/ic300581a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We prepared a novel class of ferrocene-dithiolene hybrid molecules, FcS4dt(Me)2 and FcS4dt[Pt((t)Bu2bpy)] (where FcS4dt indicates 2-(1,3-dithia[3]ferrocenophane-2-ylidene)-1,3-dithiole-4,5-dithiolate and (t)Bu2bpy indicates 4,4'-di-tert-butyl-2,2'-bipyridine), in which the ferrocene moiety was bound to the planar conjugated dithiolene skeleton via two sulfur atoms such that the cyclopentadienyl rings were perpendicular to the dithiolene backbone. The physical properties and electronic structures of the complexes and their oxidized species [FcS4dt(Me)2](•+) and [FcS4dt[Pt((t)Bu2bpy)]](•+) were investigated by means of single-crystal X-ray diffraction (XRD) analysis, cyclic voltammetry, electron paramagnetic resonance (EPR), and UV-vis near infrared (UV-vis-NIR) spectroscopy. The electron density distributions of the highest occupied molecular orbitals (HOMOs) of FcS4dt(Me)2 and FcS4dt[Pt((t)Bu2bpy)] differed remarkably in that the HOMO of the former was ferrocene-based whereas that of the latter was dithiolene-based. The differences in the HOMO distributions originated from the energy level of the dithiolene-based π-orbital in each of the complexes, which was controlled by changing R in FcS4dt(R)2 (R = Me for FcS4dt(Me)2; 2R = Pt((t)Bu2bpy) for FcS4dt[Pt((t)Bu2bpy)]). We succeeded in analyzing the crystal structure of [FcS4dt[Pt((t)Bu2bpy)]](F4TCNQ)·C6H14·CH2Cl2 (where F4TCNQ indicates 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane), which provided a rare example of the crystal structure of a [Pt(diimine)(dithiolate)](•+) ion-based complex. A comparison of the bond lengths in FcS4dt[Pt((t)Bu2bpy)] and [FcS4dt[Pt((t)Bu2bpy)]](•+) suggested that the latter complex displayed a conjugated dithiolene-based π-radical character. These considerations agreed well with the electronic structures calculated using density functional theory (DFT) and time-dependent(TD)-DFT methods. Significant electronic communication between the ferrocene and dithiolene moieties was detected for both [FcS4dt(Me)2](•+) and [FcS4dt[Pt((t)Bu2bpy)]](•+) in the appearance of an intramolecular charge transfer band, which was hardly observed for previously reported ferrocene-dithiolene hybrid molecules. The charge transfer direction was reversed between the two cations. The electron coupling parameter HAB and the potential energy curves of the oxidized complexes were estimated based on the classical two-state Marcus-Hush theory. These results suggest that FcS4dt-based metalladithiolenes can exhibit controllable electronic structures expressed as double-minimum potential energy curves.
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Affiliation(s)
- Tetsuro Kusamoto
- Department of Chemistry, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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25
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Catalán J, Reichardt C. Analysis of the Solvatochromism of 9,9′-Biaryl Compounds Using a Pure Solvent Dipolarity Scale. J Phys Chem A 2012; 116:4726-34. [DOI: 10.1021/jp211330x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Javier Catalán
- Departamento de Química Física
Aplicada, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Christian Reichardt
- Fachbereich
Chemie, Philipps-Universität, Hans-Meerwein-Strasse,
35032 Marburg, Germany
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26
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New Fulvalenium Salts of Cobalt Bis(dicarbollide): Crystal Structures and Electrical Conductivities. CRYSTALS 2012. [DOI: 10.3390/cryst2010043] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Novel Countercation in MMX-Type Mixed-Valence Chain Compound: Coexistence of Neutral and Protonated Amino Substituents. Polymers (Basel) 2011. [DOI: 10.3390/polym3041652] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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