1
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Hachem H, Jeannin O, Fourmigué M, Lorcy D. Influence of bulky groups in single-component conductors based on neutral radical gold bis(dithiolene) complexes. TRANSIT METAL CHEM 2023. [DOI: 10.1007/s11243-023-00526-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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2
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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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3
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Kimura Y, Yoshida Y, Tanaka Y, Maesato M, Komatsu T, Kitagawa H. An Approach to an Ideal Molecule-Based Mixed Conductor with Comparable Proton and Electron Conductivity. Inorg Chem 2022; 61:4453-4458. [PMID: 35234470 DOI: 10.1021/acs.inorgchem.1c03956] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We synthesized a molecule-based proton-electron mixed conductor (PEMC), a Pt(III) dithiolate complex with 1,4-naphthoquinone skeletons. The π-planar Pt complex involves a π-stacking column, which is connected by one-dimensional hydrogen bonding chains composed of water molecules. The room-temperature (RT) proton conductivity is 8.0 × 10-5 S cm-1 under ambient conditions, which is >2 orders of magnitude higher than that of the isomorphous Ni complex (7.2 × 10-7 S cm-1). The smaller activation energy (0.23 eV) compared to that of the Ni complex (0.42 eV) possibly originates from the less dense water, which promotes the reorientational dynamics, in the Pt complex with an expanded lattice, namely, negative chemical pressure upon substitution of Ni with the larger Pt. In addition, the Pt complex shows a relatively high RT electronic conductivity of 1.0 × 10-3 S cm-1 caused by the π-columns, approaching an ideal PEMC with comparable proton and electron conduction.
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Affiliation(s)
- Yojiro Kimura
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yukihiro Yoshida
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yuki Tanaka
- 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
| | - Tokutaro Komatsu
- School of Medicine, Nihon University, 30-1 Oyaguchi-Kamicho, Itabashi-ku, Tokyo 173-8610, Japan
| | - Hiroshi Kitagawa
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
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4
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Hachem H, Cui H, Kato R, Jeannin O, Barrière F, Fourmigué M, Lorcy D. Introducing Selenium in Single-Component Molecular Conductors Based on Nickel Bis(dithiolene) Complexes. Inorg Chem 2021; 60:7876-7886. [PMID: 34019422 DOI: 10.1021/acs.inorgchem.1c00400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two selenated analogues of the all-sulfur single-component molecular conductor [Ni(Et-thiazdt)2] (Et-thiazdt = N-ethylthiazoline-2-thione-4,5-dithiolate) have been prepared from their precursor radical-anion complexes. Replacement of the thione by a selenone moiety gives the neutral [Ni(Et-thiazSedt)2] complex. It adopts an unprecedented solid-state organization (for neutral nickel complexes), with the formation of perfectly eclipsed dimers and very short intermolecular Se···Se contacts (81% of the van der Waals contact distance). Limited interactions between dimers leads to a large semiconducting gap and low conductivity (σRT = 1.7 × 10-5 S cm-1). On the other hand, going from the neutral [Ni(Et-thiazdt)2] dithiolene complex to the corresponding [Ni(Et-thiazds)2] diselenolene complex gives rise to a more conventional layered structure built out of uniform stacks of the diselenolene complexes, different, however, from the all-sulfur analogue [Ni(Et-thiazdt)2]. Band structure calculations show an essentially 1D electronic structure with large band dispersion and a small HOMO-LUMO gap. Under high pressures (up to 19 GPa), the conductivity increases by 4 orders of magnitude and the activation energy is decreased from 120 meV to only 13 meV, with an abrupt change observed around 10 GPa, suggesting a structural phase transition under pressure.
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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
| | - Olivier Jeannin
- Institut des Sciences Chimiques de Rennes, Université de Rennes, CNRS, UMR 6226, F-35000 Rennes, France
| | - Frédéric Barrière
- 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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5
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Camerel F, Fourmigué M. (Photo)Thermal Stimulation of Functional Dithiolene Complexes in Soft Matter. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901118] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Franck Camerel
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes) ‐ UMR 6226 Campus de Beaulieu 35042 Rennes France
| | - Marc Fourmigué
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes) ‐ UMR 6226 Campus de Beaulieu 35042 Rennes France
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Richardson JG, Benjamin H, Moggach SA, Warren LR, Warren MR, Allan DR, Saunders LK, Morrison CA, Robertson N. Probing the structural and electronic response of Magnus green salt compounds [Pt(NH 2R) 4][PtCl 4] (R = H, CH 3) to pressure. Phys Chem Chem Phys 2020; 22:17668-17676. [DOI: 10.1039/d0cp03280h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite possessing the desirable crystal packing and short Pt⋯Pt stacking distances required for a large piezoresistive response, we explain why the conductivity-pressure response of the Magnus green salt [Pt(NH3)4][PtCl4] is extremely sluggish.
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Affiliation(s)
| | - Helen Benjamin
- EaStCHEM School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
| | - Stephen A. Moggach
- Centre for Microscopy
- Characterisation and Analysis
- University of Western Australia
- Perth
- Australia
| | | | - Mark R. Warren
- Diamond Light Source
- Diamond House
- Harwell Science & Innovation Campus
- Oxfordshire
- UK
| | - David R. Allan
- Diamond Light Source
- Diamond House
- Harwell Science & Innovation Campus
- Oxfordshire
- UK
| | - Lucy K. Saunders
- Diamond Light Source
- Diamond House
- Harwell Science & Innovation Campus
- Oxfordshire
- UK
| | | | - Neil Robertson
- EaStCHEM School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
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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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High Pressure Crystal Structure and Electrical Properties of a Single Component Molecular Crystal [Ni(dddt) 2] (dddt = 5,6-dihydro-1,4-dithiin-2,3-dithiolate). Molecules 2019; 24:molecules24101843. [PMID: 31091658 PMCID: PMC6572596 DOI: 10.3390/molecules24101843] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/08/2019] [Accepted: 05/10/2019] [Indexed: 11/17/2022] Open
Abstract
Single-component molecular conductors form an important class of materials showing exotic quantum phenomena, owing to the range of behavior they exhibit under physical stimuli. We report the effect of high pressure on the electrical properties and crystal structure of the single-component crystal [Ni(dddt)2] (where dddt = 5,6-dihydro-1,4-dithiin-2,3-dithiolate). The system is isoelectronic and isostructural with [Pd(dddt)2], which is the first example of a single-component molecular crystal that exhibits nodal line semimetallic behavior under high pressure. Systematic high pressure four-probe electrical resistivity measurements were performed up to 21.6 GPa, using a Diamond Anvil Cell (DAC), and high pressure single crystal synchrotron X-ray diffraction was performed up to 11.2 GPa. We found that [Ni(dddt)2] initially exhibits a decrease of resistivity upon increasing pressure but, unlike [Pd(dddt)2], it shows pressure-independent semiconductivity above 9.5 GPa. This correlates with decreasing changes in the unit cell parameters and intermolecular interactions, most notably the π-π stacking distance within chains of [Ni(dddt)2] molecules. Using first-principles density functional theory (DFT) calculations, based on the experimentally-determined crystal structures, we confirm that the band gap decreases with increasing pressure. Thus, we have been able to rationalize the electrical behavior of [Ni(dddt)2] in the pressure-dependent regime, and suggest possible explanations for its pressure-independent behavior at higher pressures.
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10
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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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11
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Filatre-Furcate A, Roisnel T, Fourmigué M, Jeannin O, Bellec N, Auban-Senzier P, Lorcy D. Subtle Steric Differences Impact the Structural and Conducting Properties of Radical Gold Bis(dithiolene) Complexes. Chemistry 2017; 23:16004-16013. [PMID: 28856743 DOI: 10.1002/chem.201703172] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Indexed: 11/06/2022]
Abstract
Among single component molecular conductors, neutral radical gold dithiolene complexes [(R-thiazdt)2 Au]. derived from the N-alkyl-1,3-thiazoline-2-thione-4,5-dithiolate (R-thiazdt) ligand provide an extensive series of conducting, non-dimerized, half-filled band systems. Analogues of the known R=isopropyl (iPr) derivative were investigated here with R=NMe2 , cyclopropyl (cPr) and n-propyl (nPr), aiming at rationalizing the different solid state structures adopted by these compounds despite very closely related substituents on the heterocyclic nitrogen atom. An original crisscross organization within dimerized chains is observed with R=NMe2 , differing however from the analogous iPr derivative by a 180° rotation of the heterocyclic nitrogen substituent. On the other hand, the cyclopropyl and n-propyl substituents lead to robust, uniform, non-dimerized chains with a strongly 1 D electronic structure and a formal half-filled electronic structure. The semiconducting behaviour of these two radical complexes is characteristic of a Mott insulator, whose sensitivity to external pressure has been evaluated up to 2.5 GPa.
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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
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Campus de Beaulieu, Bât 10A, 35042, Rennes cedex, France
| | - Marc Fourmigué
- Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Campus de Beaulieu, Bât 10A, 35042, Rennes cedex, France
| | - Olivier Jeannin
- Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Campus de Beaulieu, Bât 10A, 35042, Rennes cedex, France
| | - Nathalie Bellec
- Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Campus de Beaulieu, Bât 10A, 35042, Rennes cedex, France
| | - Pascale Auban-Senzier
- Laboratoire de Physique des Solides UMR 8502, CNRS-Université de Paris-Sud, Bât 510, 91405, Orsay cedex, France
| | - Dominique Lorcy
- 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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13
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Kato R, Cui H, Tsumuraya T, Miyazaki T, Suzumura Y. Emergence of the Dirac Electron System in a Single-Component Molecular Conductor under High Pressure. J Am Chem Soc 2017; 139:1770-1773. [PMID: 28121146 DOI: 10.1021/jacs.6b12187] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Single-component molecular conductors can provide a variety of electronic states. We demonstrate here that the Dirac electron system emerges in a single-component molecular conductor under high pressure. First-principles density functional theory calculations revealed that Dirac cones are formed in the single-component molecular conductor [Pd(dddt)2] (dddt = 5,6-dihydro-1,4-dithiin-2,3-dithiolate), which shows temperature-independent resistivity (zero-gap behavior) at 12.6 GPa. The Dirac cone formation in [Pd(dddt)2] can be understood by a tight-binding model. The Dirac points originate from the HOMO and LUMO bands, each of which is associated with different molecular layers. Overlap of these two bands provides a closed intersection at the Fermi level (Fermi line) if there is no HOMO-LUMO coupling. Two-step HOMO-LUMO couplings remove the degeneracy on the Fermi line, resulting in gap formation. The Dirac cones emerge at the points where the Fermi line intersects with a line on which the HOMO-LUMO coupling is zero.
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Affiliation(s)
- Reizo Kato
- Condensed Molecular Materials Laboratory, RIKEN , Wako-shi, Saitama 351-0198, Japan
| | - HengBo Cui
- Condensed Molecular Materials Laboratory, RIKEN , Wako-shi, Saitama 351-0198, Japan
| | - Takao Tsumuraya
- Condensed Molecular Materials Laboratory, RIKEN , Wako-shi, Saitama 351-0198, Japan.,International Center for Young Scientists (ICYS), National Institute for Materials Science , Tsukuba 305-0044, Japan
| | - Tsuyoshi Miyazaki
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science , Tsukuba 305-0044, Japan
| | - Yoshikazu Suzumura
- Department of Physics, Nagoya University , Chikusa-ku, Nagoya 464-8602, Japan
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14
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Ogura S, Idobata Y, Zhou B, Kobayashi A, Takagi R, Miyagawa K, Kanoda K, Kasai H, Nishibori E, Satoko C, Delley B. Antiferromagnetic Ordering in the Single-Component Molecular Conductor [Pd(tmdt)2]. Inorg Chem 2016; 55:7709-16. [PMID: 27419930 DOI: 10.1021/acs.inorgchem.6b01166] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Crystals of [Pd(tmdt)2] (tmdt = trimethylenetetrathiafulvalenedithiolate) were prepared in order to investigate their physical properties. The electrical resistivity of [Pd(tmdt)2] was measured on single crystals using two-probe methods and showed that the room-temperature conductivity was 100 S·cm(-1). The resistivity behaviors implied that [Pd(tmdt)2] was a semimetal at approximately room temperature and became narrow-gap semiconducting as the temperature was decreased to the lowest temperature. X-ray structural studies on small single crystals of [Pd(tmdt)2] at temperatures of 20-300 K performed using synchrotron radiation at SPring-8 showed no distinct structural change over this temperature region. However, small anomalies were observed at approximately 100 K. Electron spin resonance (ESR) spectra were measured over the temperature range of 2.7-301 K. The ESR intensity increased as the temperature decreased to 100 K and then decreased linearly as the temperature was further decreased to 50 K, where an abrupt decrease in the intensity was observed. To investigate the magnetic state, (1)H nuclear magnetic resonance (NMR) measurements were performed in the temperature range of 2.5-271 K, revealing broadening below 100 K. The NMR relaxation rate gradually increased below 100 K and formed a broad peak at approximately 50 K, followed by a gradual decrease down to the lowest temperature. These results suggest that most of the sample undergoes the antiferromagnetic transition at approximately 50 K with the magnetic ordering temperatures distributed over a wide range up to 100 K. These electric and magnetic properties of [Pd(tmdt)2] are quite different from those of the single-component molecular (semi)metals [Ni(tmdt)2] and [Pt(tmdt)2], which retain their stable metallic states down to extremely low temperatures. The experimental results and the band structure calculations at the density functional theory level showed that [Pd(tmdt)2] may be an antiferromagnetic Mott insulator with a strong electron correlation.
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Affiliation(s)
- Satomi Ogura
- Department of Chemistry, College of Humanities and Sciences, Nihon University , Setagaya-ku, Tokyo 156-8550, Japan
| | - Yuki Idobata
- Department of Chemistry, College of Humanities and Sciences, Nihon University , Setagaya-ku, Tokyo 156-8550, Japan
| | - Biao Zhou
- Department of Chemistry, College of Humanities and Sciences, Nihon University , Setagaya-ku, Tokyo 156-8550, Japan
| | - Akiko Kobayashi
- Department of Chemistry, College of Humanities and Sciences, Nihon University , Setagaya-ku, Tokyo 156-8550, Japan
| | - Rina Takagi
- Department of Applied Physics, University of Tokyo , Bunkyo-ku, Tokyo 113-8656, Japan.,Center for Emergent Matter Science (CEMS), RIKEN , Wako-shi, Saitama 351-0198, Japan
| | - Kazuya Miyagawa
- Department of Applied Physics, University of Tokyo , Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazushi Kanoda
- Department of Applied Physics, University of Tokyo , Bunkyo-ku, Tokyo 113-8656, Japan
| | - 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 , Tsukuba 305-8571, Japan
| | - 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 , Tsukuba 305-8571, Japan
| | - Chikatoshi Satoko
- Department of Integrated Sciences in Physics and Biology, College of Humanities and Sciences, Nihon University , Setagaya-ku, Tokyo 156-8550, Japan
| | - Bernard Delley
- Condensed Matter Theory Group, Paul Scherrer Institut , CH-5232 Villigen PSI, Switzerland
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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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16
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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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17
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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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