1
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Youssef K, Poidevin C, Vacher A, Fihey A, Le Gal Y, Roisnel T, Lorcy D. Radical and diradical states of bis(molybdenocene dithiolene) complexes. Dalton Trans 2024; 53:9763-9776. [PMID: 38780397 DOI: 10.1039/d4dt00694a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The synthesis and characterization of two bis(dithiolene) proligands involving heteroatomic linkers such as 1,4-dithiine and dihydro-1,4-disiline between the two protected dithiolene moieties are described. Two bimetallic complexes involving these heteroatomic bridges between two redox active bis(cyclopentadienyl)molybdenum dithiolene moieties have been synthesized and characterized by electrochemistry, spectroelectrochemistry, and their properties rationalized with (TD-)DFT. Cyclic voltammetry experiments show sequential oxidation of the two redox centers with ΔE values between successive one-electron transfers varying according to the nature of the bridge. Depending on the nature of the heteroatomic bridge, the bis-oxidized complexes exhibit either a diradical character with both radicals essentially localized on the metallacycles, or a closed-shell dicationic state.
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Affiliation(s)
- Khalil Youssef
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Corentin Poidevin
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Antoine Vacher
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Arnaud Fihey
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Yann Le Gal
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Thierry Roisnel
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Dominique Lorcy
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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2
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Hachem H, Cui H, Kato R, Alemany P, Canadell E, Jeannin O, Fourmigué M, Lorcy D. Mixed-Valence Conductors from Ni Bis(diselenolene) Complexes with a Thiazoline Backbone. Inorg Chem 2023; 62:4197-4209. [PMID: 36827469 DOI: 10.1021/acs.inorgchem.2c04300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
Highly conducting, mixed-valence, multi-component nickel bis(diselenolene) salts were obtained by electrocrystallization of the monoanionic species [Ni(Me-thiazds)2]-1 (Me-thiazds: N-methyl-1,3-thiazoline-2-thione-4,5-diselenolate), with 1:2 and 1:3 stoichiometries depending of the counter ion used (Et4N+ and nBu4N+ vs Ph4P+, respectively). This behavior strongly differs from that of the corresponding monoanionic dithiolene complexes whose oxidation afforded the single component neutral species. This provides additional rare examples of mixed-valence conducting salts of nickel diselenolene complexes, only known in two examples with the dsit (1,3-dithiole-2-thione-4,5-diselenolate) and dsise (1,3-dithiole-2-selone-4,5-diselenolate) ligands. The mixed-valence salts form highly dimerized or trimerized bi- and trimetallic units, rarely seen with such nickel complexes. Transport measurements under a high pressure (up to 10 GPa) and band structure calculations confirm the semiconducting character of [Ph4P][Ni(Me-thiazds)2]3 and the quasi metallic character of [Et4N][Ni(Me-thiazds)2]2 and [NBu4]x[Ni(Me-thiazds)2]2 salts (0 < x < 1).
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Affiliation(s)
- Hadi Hachem
- Institut des Sciences Chimiques de Rennes, Université de Rennes, CNRS, UMR 6226, F-35000 Rennes, France
| | - HengBo Cui
- Condensed Molecular Materials Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan
| | - Reizo Kato
- Condensed Molecular Materials Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan
| | - Pere Alemany
- Departament de Ciència de Materials i Quimica Fisica and Institut de Quimica Teorica i Computacional (IQTCUB), Universitat de Barcelona, Marti i Franquès 1, E-08028 Barcelona, Spain
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain
| | - Olivier Jeannin
- Institut des Sciences Chimiques de Rennes, Université de Rennes, CNRS, UMR 6226, F-35000 Rennes, France
| | - Marc Fourmigué
- Institut des Sciences Chimiques de Rennes, Université de Rennes, CNRS, UMR 6226, F-35000 Rennes, France
| | - Dominique Lorcy
- Institut des Sciences Chimiques de Rennes, Université de Rennes, CNRS, UMR 6226, F-35000 Rennes, France
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3
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Yao WW, Xu L, Xu XY, Liu JL, Tian ZF, Ren XM. Insight into weakly antiferromagnetic coupling behavior in a non-integer oxidation state bis(2-thioxo-1,3-dithiole-4,5- dithiolate)nickelate molecular semiconductor. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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4
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A Discrepancy in Thermal Conductivity Measurement Data of Quantum Spin Liquid β′-EtMe3Sb[Pd(dmit)2]2 (dmit = 1,3-Dithiol-2-thione-4,5-dithiolate). CRYSTALS 2022. [DOI: 10.3390/cryst12010102] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A molecular Mott insulator β′-EtMe3Sb[Pd(dmit)2]2 is a quantum spin liquid candidate. In 2010, it was reported that thermal conductivity of β′-EtMe3Sb[Pd(dmit)2]2 is characterized by its large value and gapless behavior (a finite temperature-linear term). In 2019, however, two other research groups reported opposite data (much smaller value and a vanishingly small temperature-linear term) and the discrepancy in the thermal conductivity measurement data emerges as a serious problem concerning the ground state of the quantum spin liquid. Recently, the cooling rate was proposed to be an origin of the discrepancy. We examined effects of the cooling rate on electrical resistivity, low-temperature crystal structure, and 13C-NMR measurements and could not find any significant cooling rate dependence.
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5
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Abstract
This short review article provides the reader with a summary of the history of organic conductors. To retain a neutral and objective point of view regarding the history, background, novelty, and details of each research subject within this field, a thousand references have been cited with full titles and arranged in chronological order. Among the research conducted over ~70 years, topics from the last two decades are discussed in more detail than the rest. Unlike other papers in this issue, this review will help readers to understand the origin of each topic within the field of organic conductors and how they have evolved. Due to the advancements achieved over these 70 years, the field is nearing new horizons. As history is often a reflection of the future, this review is expected to show the future directions of this research field.
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6
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Zapata-Rivera J, Calzado CJ. Magnetostructural relationships in [Ni(dmit) 2] - radical anions. Dalton Trans 2021; 50:6620-6630. [PMID: 33900333 DOI: 10.1039/d1dt00734c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work explores the relationship between the magnetic properties of salts based on [Ni(dmit)2]- radicals and different arrangements that these radicals can adopt in the crystals, induced by the packing constrains imposed by the counterions. Our analysis is based on difference dedicated configuration interaction calculations on models containing two neighbouring [Ni(dmit)2]- units with different interaction patterns. The amplitude and sign of these through-space interactions can be rationalized on the basis of a valence-only model that essentially analyzes the effective interactions between the atoms carrying the electronic density of singly occupied orbitals (SOMOs). Despite the simplicity of the model, it provides simple rules to predict the nature and the expected amplitude (strong/medium/weak) of the leading interactions in systems based on these [Ni(dmit)2]- radicals.
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Affiliation(s)
- Jhon Zapata-Rivera
- Departamento de Química. Facultad de Ciencias. Universidad de los Andes, Cra 1 No. 18A - 12, 111711, Bogotá, Colombia
| | - Carmen J Calzado
- Departamento de Química Física, Universidad de Sevilla, c/Profesor García González, s/n., 41012 Sevilla, Spain.
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7
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Hachem H, Jeannin O, Fourmigué M, Barrière F, Lorcy D. Halogen bonded metal bis(dithiolene) 2D frameworks. CrystEngComm 2020. [DOI: 10.1039/d0ce00512f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Short and directional I⋯S halogen bonding interactions in iodinated bis(dithiolene) complexes lead to the crystallization of 2D or 3D anionic frameworks.
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Affiliation(s)
- Hadi Hachem
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
| | - Olivier Jeannin
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
| | - Marc Fourmigué
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
| | - Frédéric Barrière
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
| | - Dominique Lorcy
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
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8
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Hachem H, Bellec N, Fourmigué M, Lorcy D. Hydrogen bonding interactions in single component molecular conductors based on metal (Ni, Au) bis(dithiolene) complexes. Dalton Trans 2020; 49:6056-6064. [DOI: 10.1039/d0dt00960a] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Nickel (closed-shell) or gold (radical) bis(dithiolene) neutral complexes, functionalized with hydroxyethyl and thiazole moieties, afford hydrogen-bonded single component conductors.
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Affiliation(s)
- Hadi Hachem
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226
- F-35000 Rennes
- France
| | - Nathalie Bellec
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226
- F-35000 Rennes
- France
| | - Marc Fourmigué
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226
- F-35000 Rennes
- France
| | - Dominique Lorcy
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226
- F-35000 Rennes
- France
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9
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Yoshida Y, Maesato M, Tomeno S, Kimura Y, Saito G, Nakamura Y, Kishida H, Kitagawa H. Partial Substitution of Ag(I) for Cu(I) in Quantum Spin Liquid κ-(ET) 2Cu 2(CN) 3, Where ET Is Bis(ethylenedithio)tetrathiafulvalene. Inorg Chem 2019; 58:4820-4827. [PMID: 30932495 DOI: 10.1021/acs.inorgchem.8b03251] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Three mixed crystals, κ-(ET)2Ag2 xCu2(1- x)(CN)3 [ET is bis(ethylenedithio)tetrathiafulvalene; 0.24 < x < 0.71] with a κ-type packing motif of face-to-face ET dimers, were obtained by electrocrystallization. Regardless of the composition, each ET dimer fits into a hexagonal anionic opening (i.e., key-on-hole packing) similar to its parent spin liquid candidate, κ-(ET)2Cu2(CN)3. X-ray diffraction and energy dispersive spectroscopy analyses revealed that Cu and Ag atoms are statistically disordered with a fairly homogeneous distribution in a crystal. A structural variation depending on x is responsible for the change in the calculated band parameters related to intermolecular interactions, electron correlations, and frustrations. A salt with nearly equimolar amounts of Ag and Cu ( x = 0.49) is semiconductive at ambient pressure and undergoes a Mott transition upon application of hydrostatic pressure. Along with the positive pressure dependence of the transition temperature, the temperature-independent amplitude of magnetic torque at low temperatures suggests that the insulating phase is a quantum spin liquid. Further application of pressure results in the appearance of a superconducting phase. Contrary to those of the parent salts, κ-(ET)2Cu2(CN)3 and κ-(ET)2Ag2(CN)3, the transition temperature increases as the pressure increases and eventually reaches 4.5 K at 1.65 GPa.
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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
| | - Mitsuhiko Maesato
- Division of Chemistry, Graduate School of Science , Kyoto University , Kitashirakawa-Oiwakecho , Sakyo-ku, Kyoto 606-8502 , Japan
| | - Shinya Tomeno
- Division of Chemistry, Graduate School of Science , Kyoto University , Kitashirakawa-Oiwakecho , Sakyo-ku, Kyoto 606-8502 , Japan
| | - Yojiro Kimura
- Division of Chemistry, Graduate School of Science , Kyoto University , Kitashirakawa-Oiwakecho , Sakyo-ku, Kyoto 606-8502 , Japan
| | - Gunzi Saito
- Toyota Physical and Chemical Research Institute , Yokomichi 41-1 , Nagakute 480-1192 , Japan
| | - Yuto Nakamura
- 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
| | - Hiroshi Kitagawa
- Division of Chemistry, Graduate School of Science , Kyoto University , Kitashirakawa-Oiwakecho , Sakyo-ku, Kyoto 606-8502 , Japan
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10
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Ichihashi K, Nishimura T, Konno D, Inoue K, Nakaya T, Akutagawa T, Nakamura T, Nishihara S. Magnetic Switching by Desorption/Adsorption of an Organic Solvent Molecule from/on [Ni(dmit) 2] − Salt. CHEM LETT 2019. [DOI: 10.1246/cl.181031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Katsuya Ichihashi
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takumi Nishimura
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Daisuke Konno
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Katsuya Inoue
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- Chirality Research Center (CResCent) and Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Toshimi Nakaya
- Department of Applied Chemistry, Graduate School of Engineering and Technical Center, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Takayoshi Nakamura
- Research Institute for Electronic Science, Hokkaido University, N20W10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan
| | - Sadafumi Nishihara
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- Chirality Research Center (CResCent) and Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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11
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Zapata-Rivera J, Calzado CJ. Light-Induced Control of the Spin Distribution on Cu–Dithiolene Complexes: A Correlated Ab Initio Study. Molecules 2019; 24:molecules24061088. [PMID: 30893883 PMCID: PMC6470791 DOI: 10.3390/molecules24061088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 03/12/2019] [Accepted: 03/14/2019] [Indexed: 11/16/2022] Open
Abstract
Metal dithiolene complexes—M(dmit)2—are key building blocks for magnetic, conducting, and optical molecular materials, with singular electronic structures resulting from the mixing of the metal and dmit ligand orbitals. Their use in the design of magnetic and conducting materials is linked to the control of the unpaired electrons and their localized/delocalized nature. It has been recently found that UV–Vis light can control the spin distribution of some [Cu(dmit)2]−2 salts in a direct and reversible way. In this work, we study the optical response of these salts and the origin of the differences observed in the EPR spectra under UV–Vis irradiation by means of wave function-based quantum chemistry methods. The low-lying states of the complex have been characterized and the electronic transitions with a non-negligible oscillator strength have been identified. The population of the corresponding excited states promoted by the UV–Vis absorption produces significant changes in the spin distribution, and could explain the changes observed in the system upon illumination. The interaction between neighbor [Cu(dmit)2]−2 complexes is weakly ferromagnetic, consistent with the relative orientation of the magnetic orbitals and the crystal packing, but in disagreement with previous assignments. Our results put in evidence the complex electronic structure of the [Cu(dmit)2]−2 radical and the relevance of a multideterminantal approach for an adequate analysis of their properties.
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Affiliation(s)
- Jhon Zapata-Rivera
- Facultad de Ciencias Básicas and Universidad Tecnológica de Bolívar, Campus Tecnológico s/n, 131001 Cartagena, Colombia.
| | - Carmen J Calzado
- Departamento de Química Física, Universidad de Sevilla, c/Prof. García González and s/n, 41012 Sevilla, Spain.
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12
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Kusamoto T, Nishihara H. Zero-, one- and two-dimensional bis(dithiolato)metal complexes with unique physical and chemical properties. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.09.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Zapata-Rivera J, Sánchez-de-Armas R, Calzado CJ. Theoretical study of the photoconduction and photomagnetism of the BPY[Ni(dmit) 2] 2 molecular crystal. Dalton Trans 2019; 48:13789-13798. [DOI: 10.1039/c9dt03102b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
UV-Vis light generates photoexcited (BPY2+)* radicals that interact with the close Ni(dmit)2 units, modifying their magnetic and conducting properties.
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Affiliation(s)
| | | | - Carmen J. Calzado
- Departamento de Química Física
- Universidad de Sevilla
- s/n 41012 Sevilla
- Spain
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14
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Pustogow A, Bories M, Löhle A, Rösslhuber R, Zhukova E, Gorshunov B, Tomić S, Schlueter JA, Hübner R, Hiramatsu T, Yoshida Y, Saito G, Kato R, Lee TH, Dobrosavljević V, Fratini S, Dressel M. Quantum spin liquids unveil the genuine Mott state. NATURE MATERIALS 2018; 17:773-777. [PMID: 30082905 DOI: 10.1038/s41563-018-0140-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 06/26/2018] [Indexed: 05/13/2023]
Abstract
The localization of charge carriers by electronic repulsion was suggested by Mott in the 1930s to explain the insulating state observed in supposedly metallic NiO. The Mott metal-insulator transition has been subject of intense investigations ever since1-3-not least for its relation to high-temperature superconductivity4. A detailed comparison to real materials, however, is lacking because the pristine Mott state is commonly obscured by antiferromagnetism and a complicated band structure. Here we study organic quantum spin liquids, prototype realizations of the single-band Hubbard model in the absence of magnetic order. Mapping the Hubbard bands by optical spectroscopy provides an absolute measure of the interaction strength and bandwidth-the crucial parameters that enter calculations. In this way, we advance beyond conventional temperature-pressure plots and quantitatively compose a generic phase diagram for all genuine Mott insulators based on the absolute strength of the electronic correlations. We also identify metallic quantum fluctuations as a precursor of the Mott insulator-metal transition, previously predicted but never observed. Our results suggest that all relevant phenomena in the phase diagram scale with the Coulomb repulsion U, which provides a direct link to unconventional superconductivity in cuprates and other strongly correlated materials.
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Affiliation(s)
- A Pustogow
- Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany.
| | - M Bories
- Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany
| | - A Löhle
- Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany
| | - R Rösslhuber
- Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany
| | - E Zhukova
- Moscow Institute of Physics and Technology (State University), Dolgoprudny, Russia
| | - B Gorshunov
- Moscow Institute of Physics and Technology (State University), Dolgoprudny, Russia
| | - S Tomić
- Institut za fiziku, Zagreb, Croatia
| | - J A Schlueter
- Division of Materials Research, National Science Foundation, Arlington, VA, USA
- Materials Science Division, Argonne National Laboratory, Argonne, IL, USA
| | - R Hübner
- Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany
- Biomedizinische Chemie, Institut für Klinische Radiologie und Nuklearmedizin, Universität Heidelberg, Mannheim, Germany
| | - T Hiramatsu
- Faculty of Agriculture, Meijo University, Nagoya, Japan
| | - Y Yoshida
- Faculty of Agriculture, Meijo University, Nagoya, Japan
- Division of Chemistry, Graduate School of Science, Kyoto University, Kyoto, Japan
| | - G Saito
- Faculty of Agriculture, Meijo University, Nagoya, Japan
- Toyota Physical and Chemical Research Institute, Nagakute, Japan
| | - R Kato
- Condensed Molecular Materials Laboratory, RIKEN, Wako-shi, Saitama, Japan
| | - T-H Lee
- Department of Physics and National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
| | - V Dobrosavljević
- Department of Physics and National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
| | - S Fratini
- Institut Néel - CNRS and Université Grenoble Alpes, Grenoble, France
| | - M Dressel
- Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany
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15
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Hachem H, Xu Z, Bellec N, Jeannin O, Auban-Senzier P, Guizouarn T, Fourmigué M, Lorcy D. Neutral, closed-shell nickel bis(2-alkylthio-thiazole-4,5-dithiolate) complexes as single component molecular conductors. Dalton Trans 2018; 47:6580-6589. [PMID: 29697125 DOI: 10.1039/c8dt00818c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neutral nickel bis(dithiolene) complexes, because of their closed-shell character, are usually considered as insulating materials, unless they are formed out of highly delocalized tetrathiafulvalenedithiolate ligands. We describe here an original series of S-alkyl substituted neutral bis(thiazole-4,5-dithiolate) nickel complexes formulated as [Ni(RS-tzdt)2] (R = Me, Et), which organize in the solid state into uniform stacks and exhibit semiconducting behavior, with room temperature conductivities comparable to those reported in the prototypical [Ni(dmit)2] and [Ni(Et-thiazdt)2] neutral complexes. These findings provide new perspectives in the current search for single component molecular conductors.
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Affiliation(s)
- Hadi Hachem
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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16
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Le Gal Y, Roisnel T, Auban-Senzier P, Bellec N, Íñiguez J, Canadell E, Lorcy D. Stable Metallic State of a Neutral-Radical Single-Component Conductor at Ambient Pressure. J Am Chem Soc 2018; 140:6998-7004. [DOI: 10.1021/jacs.8b03714] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yann Le Gal
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Thierry Roisnel
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Pascale Auban-Senzier
- Laboratoire de Physique des Solides UMR 8502, CNRS-Université de Paris-Sud, Bat 510, F-91405 Orsay Cedex, France
| | - Nathalie Bellec
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Jorge Íñiguez
- Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, L-4362 Esch/Alzette, Luxembourg
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, E-08193 Bellaterra, Spain
| | - Dominique Lorcy
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
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17
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Low-Frequency Dynamics of Strongly Correlated Electrons in (BEDT-TTF)2X Studied by Fluctuation Spectroscopy. CRYSTALS 2018. [DOI: 10.3390/cryst8040166] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Fluctuation spectroscopy measurements of quasi-two-dimensional organic charge-transfer salts (BEDT-TTF) 2 X are reviewed. In the past decade, the method has served as a new approach for studying the low-frequency dynamics of strongly correlated charge carriers in these materials. We review some basic aspects of electronic fluctuations in solids, and give an overview of selected problems where the analysis of 1 / f -type fluctuations and the corresponding slow dynamics provide a better understanding of the underlying physics. These examples are related to (1) an inhomogeneous current distribution due to phase separation and/or a percolative transition; (2) slow dynamics due to a glassy freezing either of structural degrees of freedom coupling to the electronic properties or (3) of the electrons themselves, e.g., when residing on a highly-frustrated crystal lattice, where slow and heterogeneous dynamics are key experimental properties for the vitrification process of a supercooled charge-liquid. Another example is (4), the near divergence and critical slowing down of charge carrier fluctuations at the finite-temperature critical endpoint of the Mott metal-insulator transition. Here also indications for a glassy freezing and temporal and spatial correlated dynamics are found. Mapping out the region of ergodicity breaking and understanding the influence of disorder on the temporal and spatial correlated fluctuations will be an important realm of future studies, as well as the fluctuation properties deep in the Mott or charge-ordered insulating states providing a connection to relaxor or ordered ferroelectric states studied by dielectric spectroscopy.
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18
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Thermodynamic Picture of Dimer-Mott Organic Superconductors Revealed by Heat Capacity Measurements with External and Chemical Pressure Control. CRYSTALS 2018. [DOI: 10.3390/cryst8040143] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Temperature Dependence of Crystal Structures and Band Parameters in Quantum Spin Liquid β′-EtMe3Sb[Pd(dmit)2]2 and Related Materials. CRYSTALS 2018. [DOI: 10.3390/cryst8030138] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Ueda A. Development of Novel Functional Organic Crystals by Utilizing Proton- and π-Electron-Donating/Accepting Abilities. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20170239] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Akira Ueda
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
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21
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Yamamoto T, Fujimoto T, Naito T, Nakazawa Y, Tamura M, Yakushi K, Ikemoto Y, Moriwaki T, Kato R. Charge and Lattice Fluctuations in Molecule-Based Spin Liquids. Sci Rep 2017; 7:12930. [PMID: 29018228 PMCID: PMC5635065 DOI: 10.1038/s41598-017-13118-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 09/19/2017] [Indexed: 11/10/2022] Open
Abstract
Spin liquid (SL) systems have been the subject of much attention recently, as they have been theoretically predicted to not freeze, even at 0 K. Despite extensive searches being made for such a system, only a few candidates have been found. All of these candidates share geometrical frustrations that are based on triangular lattices. We applied vibrational spectroscopy to one of the candidates of a molecule-based SL system, and we compared its results against three antiferromagnetic compounds and four charge-ordered compounds. All of their structural motifs belong to triangular lattices. The C=C stretching modes in the SL state indicated that there were charge and lattice fluctuations. These fluctuations were suppressed but non-negligible in the AF compounds. This finding is potentially significant, as it indicates that a hidden lattice and charge fluctuation are the driving force of a geometrical frustration, which eventually leads to a SL state.
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Affiliation(s)
- Takashi Yamamoto
- Graduate School of Science and Technology, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 7908577, Japan. .,RIKEN, 2-1 Hirosawa, Wako, 3510198, Japan.
| | - Takashi Fujimoto
- Graduate School of Science and Technology, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 7908577, Japan
| | - Toshio Naito
- Graduate School of Science and Technology, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 7908577, Japan
| | - Yasuhiro Nakazawa
- Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Masafumi Tamura
- Department of Physics, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, 2788510, Japan
| | - Kyuya Yakushi
- Toyota Physical and Chemical Research Institute, 41-1 Yokomichi, Nagakute, 4801192, Japan
| | - Yuka Ikemoto
- JASRI, SPring-8, 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Taro Moriwaki
- JASRI, SPring-8, 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Reizo Kato
- RIKEN, 2-1 Hirosawa, Wako, 3510198, Japan
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22
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23
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Itou T, Watanabe E, Maegawa S, Tajima A, Tajima N, Kubo K, Kato R, Kanoda K. Slow dynamics of electrons at a metal-Mott insulator boundary in an organic system with disorder. SCIENCE ADVANCES 2017; 3:e1601594. [PMID: 28819640 PMCID: PMC5553821 DOI: 10.1126/sciadv.1601594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 07/06/2017] [Indexed: 06/07/2023]
Abstract
The Mott transition-a metal-insulator transition caused by repulsive Coulomb interactions between electrons-is a central issue in condensed matter physics because it is the mother earth of various attractive phenomena. Outstanding examples are high-Tc (critical temperature) cuprates and manganites exhibiting colossal magnetoresistance. Furthermore, spin liquid states, which are quantum-fluctuation-driven disordered ground states in antiferromagnets, have recently been found in magnetic systems very near the Mott transition. To date, intensive studies on the Mott transition have been conducted and appear to have established a nearly complete framework for understanding the Mott transition. We found an unknown type of Mott transition in an organic spin liquid material with a slightly disordered lattice. Around the Mott transition region of this material under pressure, nuclear magnetic resonance experiments capture the emergence of slow electronic fluctuations of the order of kilohertz or lower, which is not expected in the conventional Mott transition that appears as a clear first-order transition at low temperatures. We suggest that they are due to the unconventional metal-insulator fluctuations emerging around the disordered Mott transition in analogy to the slowly fluctuating spin phase, or Griffiths phase, realized in Ising spin systems with disordered lattices.
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Affiliation(s)
- Tetsuaki Itou
- Department of Applied Physics, Tokyo University of Science, Katsushika-ku, Tokyo 125-8585, Japan
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Eri Watanabe
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Satoru Maegawa
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Akiko Tajima
- Condensed Molecular Materials Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan
| | - Naoya Tajima
- Condensed Molecular Materials Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan
- Department of Physics, Toho University, Funabashi-shi, Chiba 274-8510, Japan
| | - Kazuya Kubo
- Condensed Molecular Materials Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan
- Research Institute for Electronic Science, Hokkaido University, Kita-ku, Sapporo 001-0020, Japan
| | - Reizo Kato
- Condensed Molecular Materials Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan
| | - Kazushi Kanoda
- Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
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24
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Filatre-Furcate A, Bellec N, Jeannin O, Auban-Senzier P, Fourmigué M, Íñiguez J, Canadell E, Brière B, Ta Phuoc V, Lorcy D. Single-Component Conductors: A Sturdy Electronic Structure Generated by Bulky Substituents. Inorg Chem 2016; 55:6036-46. [PMID: 27266960 DOI: 10.1021/acs.inorgchem.6b00556] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
While the introduction of large, bulky substituents such as tert-butyl, -SiMe3, or -Si(isopropyl)3 has been used recently to control the solid state structures and charge mobility of organic semiconductors, this crystal engineering strategy is usually avoided in molecular metals where a maximized overlap is sought. In order to investigate such steric effects in single component conductors, the ethyl group of the known [Au(Et-thiazdt)2] radical complex has been replaced by an isopropyl one to give a novel single component molecular conductor denoted [Au(iPr-thiazdt)2] (iPr-thiazdt: N-isopropyl-1,3-thiazoline-2-thione-4,5-dithiolate). It exhibits a very original stacked structure of crisscross molecules interacting laterally to give a truly three-dimensional network. This system is weakly conducting at ambient pressure (5 S·cm(-1)), and both transport and optical measurements evidence a slowly decreasing energy gap under applied pressure with a regime change around 1.5 GPa. In contrast with other conducting systems amenable to a metallic state under physical or chemical pressure, the Mott insulating state is stable here up to 4 GPa, a consequence of its peculiar electronic structure.
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Affiliation(s)
- Agathe Filatre-Furcate
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Matière Condensée et Systèmes Electroactifs (MaCSE) , Campus de Beaulieu, Bâtiment 10A, 35042 Rennes cedex, France
| | - Nathalie Bellec
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Matière Condensée et Systèmes Electroactifs (MaCSE) , Campus de Beaulieu, Bâtiment 10A, 35042 Rennes cedex, France
| | - Olivier Jeannin
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Matière Condensée et Systèmes Electroactifs (MaCSE) , Campus de Beaulieu, Bâtiment 10A, 35042 Rennes cedex, France
| | - Pascale Auban-Senzier
- Laboratoire de Physique des Solides UMR 8502 CNRS-Université Paris-Sud, Université Paris-Saclay , F.91405 Orsay cedex, France
| | - Marc Fourmigué
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Matière Condensée et Systèmes Electroactifs (MaCSE) , Campus de Beaulieu, Bâtiment 10A, 35042 Rennes cedex, France
| | - Jorge Íñiguez
- Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST) , 5 avenue des Hauts-Fourneaux, L-4362 Esch/Alzette, Luxembourg.,Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus de la UAB, E-08193 Bellaterra, Spain
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus de la UAB, E-08193 Bellaterra, Spain
| | - Benjamin Brière
- GREMAN UMR 7347 CNRS, Université F. Rabelais , Parc de Grandmont, 37200 Tours, France
| | - Vinh Ta Phuoc
- GREMAN UMR 7347 CNRS, Université F. Rabelais , Parc de Grandmont, 37200 Tours, France
| | - Dominique Lorcy
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Matière Condensée et Systèmes Electroactifs (MaCSE) , Campus de Beaulieu, Bâtiment 10A, 35042 Rennes cedex, France
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25
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Branzea DG, Pop F, Auban-Senzier P, Clérac R, Alemany P, Canadell E, Avarvari N. Localization versus Delocalization in Chiral Single Component Conductors of Gold Bis(dithiolene) Complexes. J Am Chem Soc 2016; 138:6838-51. [PMID: 27167919 DOI: 10.1021/jacs.6b03342] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The first examples of chiral single component conductors are reported. Both (S,S) and (R,R) enantiomers of 5,6-dimethyl-5,6-dihydro-1,4-dithiin-2,3-dithiolate (dm-dddt) ligand have been used to prepare anionic metal bis(dithiolene) complexes formulated as ([(n-Bu)4N][M(dm-dddt)2] (M = Au, Ni), which are isostructural according to single crystal X-ray analysis. Single crystal transport measurements indicate semiconducting behavior for the anionic radical Ni complexes, with low room temperature conductivity values and high activation energies. Electrocrystallization experiments provided neutral [M(dm-dddt)2] (M = Au, Ni) complexes. The neutral radical gold compounds show intermolecular S···S interactions in the solid state giving rise to layers interconnected through weak C-H···S hydrogen bonds. The most peculiar structural feature concerns a dissymmetry between the two dithiolene moieties, while the nickel counterpart is symmetric. Single crystal resistivity measurements show thermally activated behavior for the open-shell gold complexes, with room temperature conductivity values of 0.02-0.04 S·cm(-1) and activation energies strongly influenced by hydrostatic pressure. A thorough theoretical study on nickel anion radical and gold neutral radical bis(dithiolene) complexes applied to the chiral complexes [M(dm-dddt)2] (M = Au, Ni(-)) and to a series of previously reported compounds addressed the issue of symmetry versus asymmetry from an electronic coupling perspective between the two dithiolene ligands. It results that neutral gold complexes with dithiolene ligands without extended delocalization are Class II mixed-valent compounds in the Robin and Day classification, presenting an inherent tendency toward asymmetric structures, which can be however modulated by the intermolecular organization in the solid state.
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Affiliation(s)
- Diana G Branzea
- Université d'Angers , CNRS, Laboratoire Moltech-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
| | - Flavia Pop
- Université d'Angers , CNRS, Laboratoire Moltech-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
| | - Pascale Auban-Senzier
- Laboratoire de Physique des Solides, CNRS UMR 8502, Université Paris-Sud, Université Paris-Saclay , Orsay 91405, France
| | - Rodolphe Clérac
- CNRS, CRPP, UPR 8641 , Pessac F-33600, France.,Univ. Bordeaux, CRPP, UPR 8641 , Pessac F-33600, France
| | - 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
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona (CSIC) , Campus de la UAB, Bellaterra E-08193, Spain
| | - Narcis Avarvari
- Université d'Angers , CNRS, Laboratoire Moltech-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
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26
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Zhou B, Ogura S, Liu QZ, Kasai H, Nishibori E, Kobayashi A. A Single-component Molecular Conductor with Metal–Metal Bonding, [Pd(hfdt) 2] (hfdt: bis(trifluoromethyl)tetrathiafulvalenedithiolate). CHEM LETT 2016. [DOI: 10.1246/cl.151121] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Biao Zhou
- Department of Chemistry, College of Humanities and Sciences, Nihon University
| | - Satomi Ogura
- Department of Chemistry, College of Humanities and Sciences, Nihon University
| | - Qi Zhi Liu
- Department of Chemistry, College of Humanities and Sciences, Nihon University
| | - Hidetaka Kasai
- Faculty of Pure and Applied Science, Center for Integrated Research in Fundamental Science and Engineering (CiRfSE), and Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), University of Tsukuba
| | - Eiji Nishibori
- Faculty of Pure and Applied Science, Center for Integrated Research in Fundamental Science and Engineering (CiRfSE), and Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), University of Tsukuba
| | - Akiko Kobayashi
- Department of Chemistry, College of Humanities and Sciences, Nihon University
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27
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Valade L, de Caro D, Faulmann C, Jacob K. TTF[Ni(dmit)2]2: From single-crystals to thin layers, nanowires, and nanoparticles. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.05.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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Kamata K. Design of Highly Functionalized Polyoxometalate-Based Catalysts. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150154] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Keigo Kamata
- Department of Applied Chemistry, School of Engineering, The University of Tokyo
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29
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Le Gal Y, Vacher A, Dorcet V, Fourmigué M, Crassous J, Lorcy D. The near infra red (NIR) chiroptical properties of nickel dithiolene complexes. NEW J CHEM 2015. [DOI: 10.1039/c4nj01244e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Circular dichroism (CD) thin layer spectro-electrochemical experiments reveal a redox switching of CD-active bands in the NIR region.
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Affiliation(s)
- Yann Le Gal
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes cedex
- France
| | - Antoine Vacher
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes cedex
- France
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes cedex
- France
| | - Marc Fourmigué
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes cedex
- France
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes cedex
- France
| | - Dominique Lorcy
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes cedex
- France
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30
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Le Gal Y, Roisnel T, Auban-Senzier P, Guizouarn T, Lorcy D. Hydrogen-bonding interactions in a single-component molecular conductor: a hydroxyethyl-substituted radical gold dithiolene complex. Inorg Chem 2014; 53:8755-61. [PMID: 25084270 DOI: 10.1021/ic501437g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The anionic hydroxyethyl-substituted gold dithiolene complex [NEt4][Au(EtOH-thiazdt)2] is synthesized and further oxidized to the neutral radical species [Au(EtOH-thiazdt)2](•) through electrocrystallization. Single-crystal X-ray diffraction studies highlight the existence of the two cis and trans isomers for the monoanionic complex, with involvement of the hydroxy group in intermolecular O-H···S hydrogen-bonding interactions. The neutral radical complex, [Au(EtOH-thiazdt)2](•), is isostructural with its known ethyl analogue, namely, [Au(Et-thiazdt)2](•). It exhibits a semiconducting behavior (σRT = 0.05-0.07 S cm(-1)) at room temperature and ambient pressure with an activation energy of 0.14 eV. Comparison of the crystal structures and transport and magnetic properties with those of the prototypical [Au(Et-thiazdt)2](•) single-component conductor shows that the replacement of ethyl by a slightly bulkier hydroxyethyl substituent affects only weakly the overlap interactions, complemented here by added O-H···S hydrogen-bonding interactions.
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Affiliation(s)
- Yann Le Gal
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1 , Campus de Beaulieu, Bât 10A, 35042 Rennes Cedex, France
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31
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Filatre-Furcate A, Bellec N, Jeannin O, Auban-Senzier P, Fourmigué M, Vacher A, Lorcy D. Radical or not radical: compared structures of metal (M = Ni, Au) bis-dithiolene complexes with a thiazole backbone. Inorg Chem 2014; 53:8681-90. [PMID: 25075760 DOI: 10.1021/ic501293z] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A complete series of dianionic, monoanionic, and neutral dithiolene complexes formulated as [Ni(Et-thiazdt)2](n), with n = -2, -1, 0, and Et-thiazdt: N-ethyl-1,3-thiazoline-2-thione-4,5-dithiolate, is prepared using an optimized procedure described earlier for the N-Me derivatives. Electrochemical and spectroscopic properties confirm the electron-rich character of the Et-thiazdt dithiolate ligand. The three complexes are structurally characterized by single-crystal X-ray diffraction. The paramagnetic anionic complex [Ni(Et-thiazdt)2](-1), as Ph4P(+) salt, exhibits side-by-side lateral interactions leading to a Heisenberg spin chain behavior. The solid-state structure of the neutral, diamagnetic [Ni(Et-thiazdt)2](0) complex shows a face-to-face organization with a large longitudinal shift, at variance with the structure of its radical and neutral gold dithiolene analogue described earlier and formulated as [Au(Et-thiazdt)2](•). Comparison of the two structures, and those of the other few structurally characterized pairs of Ni/Au dithiolene complexes, demonstrates the important role played by overlap interactions between gold dithiolene radical species. Despite its closed-shell character, the neutral nickel complex [Ni(Et-thiazdt)2](0) exhibits a semiconducting behavior with a room-temperature conductivity σRT ≈ 0.014 S cm(-1).
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Affiliation(s)
- Agathe Filatre-Furcate
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de Beaulieu, Bât 10A, 35042 Rennes Cedex, France
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32
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Organizing Radical Species in the Solid State with Halogen Bonding. Top Curr Chem (Cham) 2014; 359:91-113. [DOI: 10.1007/128_2014_604] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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