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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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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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3
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Magnetic and Electronic Properties of π-d Interacting Molecular Magnetic Superconductor κ-(BETS)2FeX4 (X = Cl, Br) Studied by Angle-Resolved Heat Capacity Measurements. CRYSTALS 2019. [DOI: 10.3390/cryst9020066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Thermodynamic picture induced by π-d interaction in a molecular magnetic superconductor κ-(BETS)2FeX4 (X = Cl, Br), where BETS is bis(ethylenedithio)tetraselenafulvalene, studied by single crystal calorimetry is reviewed. Although the S = 5/2 spins of Fe3+ in the anion layers form a three-dimensional long-range ordering with nearly full entropy of Rln6, a broad hump structure appears in the temperature dependence of the magnetic heat capacity only when the magnetic field is applied parallel to the a axis, which is considered as the magnetic easy axis. The scaling of the temperature dependence of the magnetic heat capacity of the two salts is possible using the parameter of |Jdd|/kB and therefore the origin of the hump structure is related to the direct magnetic interaction, Jdd, that is dominant in the system. Quite unusual crossover from a three-dimensional ordering to a one-dimensional magnet occurs when magnetic fields are applied parallel to the a axis. A notable anisotropic field-direction dependence against the in-plane magnetic field was also observed in the transition temperature of the bulk superconductivity by the angle-resolved heat capacity measurements. We discuss the origin of this in-plane anisotropy in terms of the 3d electron spin configuration change induced by magnetic fields.
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4
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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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5
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Kushch ND, Buravov LI, Kushch PP, Shilov GV, Yamochi H, Ishikawa M, Otsuka A, Shakin AA, Maximova OV, Volkova OS, Vasiliev AN, Yagubskii EB. Multifunctional Compound Combining Conductivity and Single-Molecule Magnetism in the Same Temperature Range. Inorg Chem 2018; 57:2386-2389. [PMID: 29465234 DOI: 10.1021/acs.inorgchem.7b03152] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the first highly conducting single-molecule magnet, (BEDO)4[ReF6]·6H2O [1; BEDO = bis(ethylenedioxo)tetrathiafulvalene], whose conductivity and single-molecule magnetism coexist in the same temperature range. The compound was synthesized by BEDO electrocrystallization in the presence of (Ph4P)2[ReF6]·2H2O and characterized by crystallography and measurements of the conductivity and alternating-current magnetic susceptibility.
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Affiliation(s)
- Nataliya D Kushch
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Lev I Buravov
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Pavel P Kushch
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Gennadii V Shilov
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Hideki Yamochi
- Division of Chemistry, Graduate School of Science , Kyoto University , Sakyo-ku, Kyoto 606-8502 , Japan.,Research Center for Low Temperature and Materials Sciences , Kyoto University , Sakyo-ku, Kyoto 606-8501 , Japan
| | - Manabu Ishikawa
- Research Center for Low Temperature and Materials Sciences , Kyoto University , Sakyo-ku, Kyoto 606-8501 , Japan
| | - Akihiro Otsuka
- Division of Chemistry, Graduate School of Science , Kyoto University , Sakyo-ku, Kyoto 606-8502 , Japan.,Research Center for Low Temperature and Materials Sciences , Kyoto University , Sakyo-ku, Kyoto 606-8501 , Japan
| | - Alexander A Shakin
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia
| | - Olga V Maximova
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Olga S Volkova
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Alexander N Vasiliev
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia.,National Research South Ural State University , Chelyabinsk 454080 , Russia
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
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6
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Nishijo J, Shima Y, Enomoto M. Synthesis, crystal structures and magnetic properties of new chromium(III)–acetylide–TTF type complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.03.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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7
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The Highly Conducting Spin-Crossover Compound Combining Fe(III) Cation Complex with TCNQ in a Fractional Reduction State. Synthesis, Structure, Electric and Magnetic Properties. MAGNETOCHEMISTRY 2017. [DOI: 10.3390/magnetochemistry3010009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Naito T. Development of a Control Method for Conduction and Magnetism in Molecular Crystals. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20160295] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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9
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First radical cаtion salt of bis(ethylenedithio)tetrathiafulvalene with organic anion [С(NCN)2NH2]–: synthesis, structure, and conducting properties. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1548-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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Feldman AW, Ovaska SI, Ovaska TV. Facile Access to Cyclooctanoid Ring Systems via Microwave-Assisted Tandem 6-exo dig Cyclization-Rearrangement Sequence. Tetrahedron 2014; 70:4147-4155. [PMID: 24994941 DOI: 10.1016/j.tet.2014.02.089] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Appropriately substituted 5-alkyn-1-ol systems bearing a nitrile moiety at the triple bond serve as versatile precursors to a variety of cyclooctenone derivatives via a "one-pot" base-catalyzed oxyanionic 6-exo dig cyclization/Claisen rearrangement sequence under microwave irradiation. It was found that the initially formed cyclic intermediate consists of a mixture of endo and exocyclic isomers, which appear to be in equilibrium under the reaction conditions. However, the only observed products from these reactions are α-cyano substituted cyclooctenones, derived from the exocyclic dihydrofuran intermediates.
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Affiliation(s)
- Aaron W Feldman
- Department of Chemistry, Connecticut College, 270 Mohegan Avenue, New London, Connecticut 06320, United States of America
| | - Sami I Ovaska
- Department of Chemistry, Connecticut College, 270 Mohegan Avenue, New London, Connecticut 06320, United States of America
| | - Timo V Ovaska
- Department of Chemistry, Connecticut College, 270 Mohegan Avenue, New London, Connecticut 06320, United States of America
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11
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Tsujimoto K, Ogasawara R, Nakagawa T, Fujiwara H. Photofunctional Conductors Based on TTF-BODIPY Dyads Bearingp-Phenylene andp-Phenylenevinylene Spacers. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201400103] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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12
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Whyte AM, Roach B, Henderson DK, Tasker PA, Matsushita MM, Awaga K, White FJ, Richardson P, Robertson N. Structural, magnetic, and electronic properties of phenolic oxime complexes of Cu and Ni. Inorg Chem 2011; 50:12867-76. [PMID: 22098459 DOI: 10.1021/ic2020644] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Square planar complexes of the type Ni(L(1))(2), Ni(L(2))(2), Cu(L(1))(2), and Cu(L(2))(2), where L(1)H = 2-hydroxy-5-t-octylacetophenone oxime and L(2)H = 2-hydroxy-5-n-propylacetophenone oxime, have been prepared and characterized by single-crystal X-ray diffraction, cyclic voltammetry, UV/vis spectroscopy, field-effect-transistor measurements, density functional theory (DFT) and time-dependent DFT (TDDFT) calculations, and, in the case of the paramagnetic species, electron paramagnetic resonance (EPR) and magnetic susceptibility. Variation of alkyl groups on the ligand from t-octyl to n-propyl enabled electronic isolation of the complexes in the crystal structures of M(L(1))(2) contrasting with π-stacking interactions for M(L(2))(2) (M = Ni, Cu). This was evidenced by a one-dimensional antiferromagnetic chain for Cu(L(2))(2) but ideal paramagnetic behavior for Cu(L(1))(2) down to 1.8 K. Despite isostructural single crystal structures for M(L(2))(2), thin-film X-ray diffraction and scanning electron microscopy (SEM) revealed different morphologies depending on the metal and the deposition method (vapor or solution). The Cu complexes displayed limited electronic interaction between the central metal and the delocalized ligands, with more mixing in the case of Ni(II), as shown by electrochemistry and UV/vis spectroscopy. The complexes M(L(2))(2) showed poor charge transport in a field-effect transistor (FET) device despite the ability to form π-stacking structures, and this provides design insights for metal complexes to be used in conductive thin-film devices.
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Affiliation(s)
- Alexander M Whyte
- School of Chemistry and EaStChem, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh, Scotland EH9 3JJ, UK
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13
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The first BETS radical cation salts with dicyanamide anion: Crystal growth, structure and conductivity study. J SOLID STATE CHEM 2011. [DOI: 10.1016/j.jssc.2011.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Kobayashi H, Kobayashi A, Tajima H. Studies on Molecular Conductors: From Organic Semiconductors to Molecular Metals and Superconductors. Chem Asian J 2011; 6:1688-704. [DOI: 10.1002/asia.201100061] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Indexed: 11/05/2022]
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15
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Nishijo J, Judai K, Nishi N. Weak Ferromagnetism and Strong Spin−Spin Interaction Mediated by the Mixed-Valence Ethynyltetrathiafulvalene-Type Ligand. Inorg Chem 2011; 50:3464-70. [DOI: 10.1021/ic102384s] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junichi Nishijo
- Department of Materials Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
| | - Ken Judai
- Department of Materials Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
| | - Nobuyuki Nishi
- Department of Materials Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
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16
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Xia H, Liu D, Song K, Miao Q. Vapochromic and semiconducting solids of a bifunctional hydrocarbon. Chem Sci 2011. [DOI: 10.1039/c1sc00494h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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17
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Sugawara T, Komatsu H, Suzuki K. Interplay between magnetism and conductivity derived from spin-polarized donor radicals. Chem Soc Rev 2011; 40:3105-18. [DOI: 10.1039/c0cs00157k] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Zhou B, Yajima H, Kobayashi A, Okano Y, Tanaka H, Kumashiro T, Nishibori E, Sawa H, Kobayashi H. Single-Component Molecular Conductor [Cu(tmdt)2] Containing an Antiferromagnetic Heisenberg Chain. Inorg Chem 2010; 49:6740-7. [DOI: 10.1021/ic100845f] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Biao Zhou
- Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-Ku, Tokyo 156-8550, Japan
| | - Hiroyuki Yajima
- Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-Ku, Tokyo 156-8550, Japan
| | - Akiko Kobayashi
- Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-Ku, Tokyo 156-8550, Japan
| | | | - Hisashi Tanaka
- Nanosystem Research Institute (NRI), AIST, Umezono, Tsukuba 305-8565, Japan
| | - Tetsuya Kumashiro
- Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan
| | - Eiji Nishibori
- Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan
| | - Hiroshi Sawa
- Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan
| | - Hayao Kobayashi
- Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-Ku, Tokyo 156-8550, Japan
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Huang FP, Tian JL, Li DD, Chen GJ, Gu W, Yan SP, Liu X, Liao DZ, Cheng P. Pillared cobalt–organic framework with an unprecedented (3,4,6)-connected architecture showing the coexistence of spin canting and long-range magnetic ordering. CrystEngComm 2010. [DOI: 10.1039/b911950g] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Cui H, Brooks J, Graf D, Okano Y, Sun H, Kobayashi H. Electrical properties of new organic conductor (BEST)(2)InBr(4) [BEST = bis(ethylenediseleno)tetrathiafulvalene] up to 10.8 GPa and antiferromagnetic transition of (BEST)(2)FeBr(4). Inorg Chem 2009; 48:4268-70. [PMID: 19323462 DOI: 10.1021/ic900220g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new organic conductor, (BEST)(2)InBr(4), with alternating donor layer arrangement has been synthesized, and the electrical properties have been investigated up to 10.8 GPa. The temperature dependence of the high-pressure resistivity shows a complicated metal-semiconductor transition behavior. The room temperature resistivity decreases with pressure up to 8.6 GPa but increases at higher pressures. The magnetic susceptibility of an isostructural (BEST)(2)FeBr(4) salt shows an antiferromagnetic transition at 4.4 K, which is suppressed with increasing magnetic field.
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Affiliation(s)
- Hengbo Cui
- National High Magnetic Field Laboratory (NHMFL), Florida State University, Tallahassee, Florida 32310, USA
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21
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Zorina LV, Prokhorova TG, Khasanov SS, Simonov SV, Zverev VN, Korobenko AV, Putrya AV, Mironov VS, Canadell E, Shibaeva RP, Yagubskii EB. A new hybrid molecular metal assembling a BEDT-TTF conducting network and the magnetic chain anion [Mn2Cl5(H2O)5]−∞: α-(BEDT-TTF)2[Mn2Cl5(H2O)5]. CrystEngComm 2009. [DOI: 10.1039/b905840k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Reinheimer EW, Galán-Mascarós JR, Gómez-García CJ, Zhao H, Fourmigué M, Dunbar KR. Radical salts of TTF derivatives with the metal–metal bonded [Re2Cl8]2− anion. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2008.03.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Kushch ND, Yagubskii EB, Kartsovnik MV, Buravov LI, Dubrovskii AD, Chekhlov AN, Biberacher W. Pi-donor BETS based bifunctional superconductor with polymeric dicyanamidomanganate(II) anion layer: kappa-(BETS)2Mn[N(CN)2]3. J Am Chem Soc 2008; 130:7238-40. [PMID: 18481859 DOI: 10.1021/ja801841q] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Crystals of the bis(ethylenedithio)tetraselenafulvalene (BETS) radical cation salt with dicyanamidomanganate(II) anion, kappa-(BETS)2Mn[N(CN)2]3, were synthesized, which combine conducting and magnetic properties at ambient pressure and are superconducting (Tc approximately/= 5 K) at a moderate pressure of 0.3 kbar.
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Affiliation(s)
- Nataliya D Kushch
- Institute of Problems of Chemical Physics, Russian Academy of Science, Chernogolovka, 142432 Russia.
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24
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Huang YG, Yuan DQ, Pan L, Jiang FL, Wu MY, Zhang XD, Wei, Gao Q, Lee JY, Li J, Hong MC. A 3D Porous Cobalt−Organic Framework Exhibiting Spin-Canted Antiferromagnetism and Field-Induced Spin-Flop Transition. Inorg Chem 2007; 46:9609-15. [DOI: 10.1021/ic700559z] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- You-Gui Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Da-Qiang Yuan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Long Pan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Fei-Long Jiang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Ming-Yan Wu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Xu-Dong Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Wei
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Qiang Gao
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Jeong Yong Lee
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Jing Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
| | - Mao-Chun Hong
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China, and Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854
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Toyota N, Suzuki T. Multifunctional interplay among the conductivity, magnetism and dielectricity in π–d interacting λ-(BETS)2FeCl4. CR CHIM 2007. [DOI: 10.1016/j.crci.2006.09.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Matsushita MM, Kawakami H, Kawada Y, Sugawara T. Negative Magneto-resistance Observed on an Ion-radical Salt of a TTF-based Spin-polarized Donor. CHEM LETT 2007. [DOI: 10.1246/cl.2007.110] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Shibaeva RP, Khasanov SS, Zorina LV, Simonov SV. Structural features of low-dimensional molecular conductors—Representatives of new hybrid polyfunctional materials: Review. CRYSTALLOGR REP+ 2006. [DOI: 10.1134/s1063774506060058] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Fujiyama S, Takigawa M, Kikuchi J, Cui HB, Fujiwara H, Kobayashi H. Compensation of effective field in the field-induced superconductor kappa-(BETS)2FeBr4 observed by 77Se NMR. PHYSICAL REVIEW LETTERS 2006; 96:217001. [PMID: 16803267 DOI: 10.1103/physrevlett.96.217001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2006] [Indexed: 05/10/2023]
Abstract
We report results of 77Se NMR frequency shift in the normal state of the organic charge-transfer salt kappa-(BETS)2FeBr4 which shows magnetic field-induced superconductivity (FISC). From a simple mean-field analysis, we determined the field and the temperature dependences of the magnetization m(pi) of the pi conduction electrons on BETS molecules. We found that the Fe spins are antiferromagnetically coupled to the pi electrons and determined the exchange field to be J = -2.3T/microB. The exchange field from the fully saturated Fe moments (5 microB) is compensated by an external field of 12 T. This is close to the central field of the FISC phase, consistent with the Jaccarino-Peter local field-compensation mechanism for FISC [Phys. Rev. Lett. 9, 290 (1962)].
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Affiliation(s)
- S Fujiyama
- Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan
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Kusamoto T, Fujiwara E, Kobayashi A, Cui H, Otsuka T, Okano Y, Fujiwara H, Kobayashi H. BDT-TTP-Based π Conductors Containing Divalent Magnetic and Non-Magnetic Inorganic Anions, [M IICl 4] 2−(M = Co, Mn, Zn). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2006. [DOI: 10.1246/bcsj.79.527] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kurmoo M, Kumagai H, Akita-Tanaka M, Inoue K, Takagi S. Metal−Organic Frameworks from Homometallic Chains of Nickel(II) and 1,4-Cyclohexanedicarboxylate Connectors: Ferrimagnet−Ferromagnet Transformation. Inorg Chem 2006; 45:1627-37. [PMID: 16471975 DOI: 10.1021/ic051633n] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The hydrothermal reactions of nickel(II) nitrate with a mixture of the geometric cis and trans isomers of 1,4-cyclohexanedicarboxylic acid (1,4-chdc or C6H10(COOH)2) and a base yield three structurally different complexes, [Ni3(mu3-OH)2(mu4-cis-1,4-chdc)2(H2O)4].2H2O (1), [Ni(3)(mu3-OH)2(mu4-trans-1,4-chdc)2(H2O)4].4H2O (2), and [Ni(H2O)4(mu2-trans-1,4-chdc)], depending on the reaction conditions. The single-crystal X-ray structure analyses of 1 and 2 reveal segregation of the isomers and formation of frameworks based on infinite Ni3(OH)2(H2O)4 chains, acting as secondary building units, connected by either cis- or trans-chdc for 1 and 2, respectively. The frameworks sustain channels that house two or four water molecules, respectively, according to the size and shape of the channels that depend on the particular isomer. The structure of 3 consists of chains of square-planar Ni(H2O)4 bridged by trans-chdc. Magnetic data as a function of temperature and field of the virgin samples for 1 indicate long-range ordering (LRO) to a ferrimagnetic ground state at 2.1 K that is reversibly transformed into a ferromagnet below 4.4 K upon partial dehydration and rehydration. Powder X-ray diffraction of 1, in its virgin state, after dehydration and after rehydration, confirms the stability of the framework. The magnetic data for 2 tend toward a LRO state to possibly a ferrimagnet below 2 K. The temperature dependence of the susceptibility of the two compounds is accounted for by the presence of both ferro- and antiferromagnetic exchanges within each chain via Ni-O-Ni and Ni-O-C-O-Ni pathways and weak coupling between neighboring chains via the 1,4-chdc unit. 3 is a uniform s = 1 antiferromagnetic chain (J/kB = 2.27(1) K).
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Affiliation(s)
- Mohamedally Kurmoo
- Laboratoire de Chimie de Coordination Organique, UMR7140-CNRS, Institut Le Bel, Université Louis Pasteur, Strasbourg, France.
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Zhang ZJ, Xiang SC, Zhang YF, Wu AQ, Cai LZ, Guo GC, Huang JS. A New Type of Hybrid Magnetic Semiconductor Based upon Polymeric Iodoplumbate and Metal−Organic Complexes as Templates. Inorg Chem 2006; 45:1972-7. [PMID: 16499358 DOI: 10.1021/ic051350v] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new type of one-dimensional organic-inorganic hybrid [M(en)3]Pb2I6 [M = Mn (1), Fe (2), Zn (3), Ni (4); en = ethylenediamine] has been obtained and structurally characterized by X-ray crystallography, which opens a new approach to construct hybrid magnetic semiconductors. The results of optical absorption spectra and theoretical calculations for compounds 1-3 reveal a quantum confinement effect, and the variable-temperature magnetic susceptibility measurements for 1, 2, and 4 indicate ferromagnetic, antiferromagnetic, and paramagnetic behavior, respectively.
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Affiliation(s)
- Zhang-Jing Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China
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Otsubo S, Cui H, Lee HJ, Fujiwara H, Takahashi K, Okano Y, Kobayashi H. A Magnetic Organic Conductor Based on a π Donor with a Stable Radical and a Magnetic Anion—A Step to Magnetic Organic Metals with Two Kinds of Localized Spin Systems. CHEM LETT 2006. [DOI: 10.1246/cl.2006.130] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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Otsubo S, Takahashi K, Cui H, Okano Y, Kobayashi H. Organic Metals Based on an Asymmetric π Donor PEDT-TSF, (PEDT-TSF)2FeX4(PEDT-TSF = Pyrazinoethylenedithiotetraselenafulvalene; X = Cl, Br). CHEM LETT 2005. [DOI: 10.1246/cl.2005.1598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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34
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Fujiwara H, Kobayashi H. Development of an Antiferromagnetic Organic Superconductor κ-(BETS)2FeBr4. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2005. [DOI: 10.1246/bcsj.78.1181] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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35
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Wang Z, Zhang B, Kurmoo M, Green MA, Fujiwara H, Otsuka T, Kobayashi H. Synthesis and Characterization of a Porous Magnetic Diamond Framework, Co3(HCOO)6, and Its N2 Sorption Characteristic. Inorg Chem 2005; 44:1230-7. [PMID: 15732963 DOI: 10.1021/ic048986r] [Citation(s) in RCA: 138] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[Co3(HCOO)6](CH3OH)(H2O) (1), the isostructural analogue of the porous magnet of coordination framework [Mn3(HCOO)6](CH3OH)(H2O), and its desolvated form [Co3(HCOO)6] (2) were prepared and characterized by X-ray and neutron diffraction methods, IR, thermal analyses, and BET, and their magnetic properties were measured. The parent compound, 1, crystallizes in the monoclinic system, space group P21/c, a = 11.254(2) A, b = 9.832(1) A, c = 18.108(3) A, beta = 127.222(2) degrees , V = 1595.5(4) A3, Z = 4, R1 = 0.0329 at 180 K. It possesses a unit cell volume that is 9% smaller than [Mn3(HCOO)6](CH3OH)(H2O) due to the smaller radius of Co2+ ion. Compared with the parent compound 1, the desolvated compound 2 has slightly larger lattice with cell parameters of a = 11.2858(4) A, b = 9.8690(4) A, c = 18.1797(6) A, beta = 127.193(2) degrees , V = 1613.0(1) A3, R1 = 0.0356 at 180 K. The cell parameters of 2, obtained from neutron powder data at 2 K, are a = 11.309(2) A, b = 9.869(1) A, c = 18.201(3) A, beta = 127.244(8) degrees , V = 1617.3(5) A3. The pore volume reduces from 33% to 30% by replacing Mn by Co. The material exhibits a diamond framework based on Co-centered CoCo4 tetrahedral nodes, in which all metal ions have octahedral coordination geometry and all HCOO groups link the metal ions in syn-syn/anti modes. It displays thermal stability up to 270 degrees C. The compound easily loses guest molecules without loss of crystallinity, and it partly reabsorbs water from the atmosphere. Significant N2 sorption was observed for the desolvated framework suggesting that the material possesses permanent porosity. The magnetic properties show a tendency to a 3D long-range magnetic ordering, probably antiferromagnetic with a spin canting arrangement below 2 K.
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Affiliation(s)
- Zheming Wang
- Institute for Molecular Science and CREST, Japan, Science and Technology Coorporation, Okazaki 444-8585, Japan.
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36
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Cui HB, Otsubo S, Okano Y, Kobayashi H. Structural and Physical Properties of λ-(BEST) 2MCl 4(BEST = Bis(ethylenediseleno)tetrathiafulvalene; M = Fe, Ga) and Analogous Magnetic Organic Conductor. CHEM LETT 2005. [DOI: 10.1246/cl.2005.254] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Affiliation(s)
- Eugenio Coronado
- Institut de Ciència Molecular de la Universitat de Valencia, C/Doctor Moliner 50, 46100 Burjassot, Spain, and Davy Faraday Research Laboratory, The Royal Institution of Great Britain, 21 Albemarle Street, London W1S 4BS, U.K
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38
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Kartsovnik MV. High Magnetic Fields: A Tool for Studying Electronic Properties of Layered Organic Metals. Chem Rev 2004; 104:5737-82. [PMID: 15535667 DOI: 10.1021/cr0306891] [Citation(s) in RCA: 183] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark V Kartsovnik
- Walther-Meissner-Institut, Bayerische Academie der Wissenschaften, Walther-Meissner-Strasse 8, D-85748 Garching, Germany.
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Kobayashi H, Cui H, Kobayashi A. Organic Metals and Superconductors Based on BETS (BETS = Bis(ethylenedithio)tetraselenafulvalene). Chem Rev 2004; 104:5265-88. [PMID: 15535650 DOI: 10.1021/cr030657d] [Citation(s) in RCA: 274] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hayao Kobayashi
- Institute for Molecular Science and CREST, Okazaki 444-8585, Japan.
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40
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Fujiwara E, Kobayashi A, Fujiwara H, Sugimoto T, Kobayashi H. Novel π-Extended Donors Containing a 2,2,5,5-Tetramethylpyrrolin-1-yloxyl Radical Designed for Magnetic Molecular Conductors. CHEM LETT 2004. [DOI: 10.1246/cl.2004.964] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Otsuka T, Cui H, Fujiwara H, Kobayashi H, Fujiwara E, Kobayashi A. The pressure effect on the antiferromagnetic and superconducting transitions of κ-(BETS)2FeBr4. ACTA ACUST UNITED AC 2004. [DOI: 10.1039/b404004j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Matsumoto T, Kamada Y, Sugimoto T, Tada T, Noguchi S, Nakazumi H, Kawakami T, Yamaguchi K, Shiro M. One-dimensional CuBr4(2-) ion array and CuBr3- ion chain included in the pi conducting framework composed of bis(methylthio)tetrathiafulvalenothioquinone-1,3-dithiocarbonatodithiolemethide molecules. Inorg Chem 2003; 42:8638-45. [PMID: 14686840 DOI: 10.1021/ic0300971] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of a new donor molecule having a planar but largely bent skeleton, bis(methylthio)tetrathiafulvalenothioquinone-1,3-dithiocarbonatodithiolemethide (1), with CuBr(2) in CH(3)CN/CS(2) afforded a black-colored crystal with a formula of 1(4).CuBr(4).2CuBr(3). In the crystal 1 molecules are one-dimensionally stacked to form half-cut pipelike columns, which are arranged to construct two different shapes of channels included by a one-dimensional array of CuBr(4)(2)(-) ions and a bibromide-bridged linear chain of CuBr(3)(-) ions with a square-pyramidal geometry at the Cu atom, [CuBr(3)(-)](n)(), respectively. The room-temperature electrical conductivity on the single crystal of 1(4).CuBr(4).2CuBr(3) was 2.0 x 10(-)(2) S cm(-)(1), and the temperature dependence of electrical conductivity was semiconducting with a large activation energy of 160 meV. The interactions between the neighboring Cu(II) d spins in the one-dimensional S = 1/2 spin systems due to CuBr(4)(2)(-) ions and CuBr(3)(-) ions in [CuBr(3)(-)](n)() were both antiferromagnetic, and the magnitudes were moderate (Weiss temperature, THETAV; = -18 K) in the former spin system and fairly large (coupling constant, J/k(B) = -120 K) in the latter spin system, which was in marked contrast to a moderate and ferromagnetic [CuBr(3)(-)](n)() chain in the cyclohexylammonium salt already known.
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Affiliation(s)
- Takuya Matsumoto
- Research Institute for Advanced Science and Technology, Osaka Prefecture University, Osaka 599-8570, Japan
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43
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Cui H, Otsuka T, Kobayashi A, Takeda N, Ishikawa M, Misaki Y, Kobayashi H. Structural, electrical, and magnetic properties of a series of molecular conductors based on BDT-TTP and lanthanoid nitrate complex anions (BDT-TTP = 2,5-Bis(1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene). Inorg Chem 2003; 42:6114-22. [PMID: 12971784 DOI: 10.1021/ic034459g] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The platelike crystals of a series of novel molecular conductors, which are based on the pi-donor molecules BDT-TTP (2,5-bis(1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene) with a tetrathiapentalene skeleton and lanthanide nitrate complex anions [Ln(NO3)x](3-x)(Ln = La, Ce, (Pr), Tb, Dy, Ho, Er, Tm, Yb, Lu) with localized 4f magnetic moments, were synthesized. Except for the Ce complex, the salts were composed of (BDT-TTP)(5)[Ln(NO(3))(5)] and were isostructural. Even though the Ce crystal had a different composition, (BDT-TTP)(6)[Ce(NO(3))(6)](C(2)H(5)OH)(x)() (x approximately 3), the crystals all had the space group P(-)1. Although the X-ray examination of the Pr salts was insufficient, the existence of two modifications was suggested in these systems by preliminary X-ray examination. Previously, we reported the crystal structures and unique magnetic properties of (BDT-TTP)(5)[Ln(NO(3))(5)] (Ln = Sm, Eu, Nd, Gd). Thus, by combining the results of this work with previous one, we for the first time succeeded in obtaining a complete set of organic conductors composed of the identical pi-donors (BDT-TTP in this case) and all the lanthanide nitrate complex anions (except the complex with Pm(3+)). The crystals were all metallic down to 2 K. Electronic band structure calculations resulted in two-dimensional Fermi surfaces, which was consistent with their stable metallic states. Except for the Lu complex, which lacked paramagnetic moments, the magnetic susceptibilities were measured on the six heavy lanthanide ion complex salts by a SQUID magnetometer (Ln = Tb, Dy, Ho, Er, Tm, Yb). The large paramagnetic susceptibilities, which were caused by the paramagnetic moments of the rare-earth ions, were obtained. The Curie-Weiss law fairly accurately reproduced the temperature dependence of the magnetic susceptibilities of (BDT-TTP)(5)[Ho(NO(3))(5)] in the experimental temperature range (2-300 K) and a comparatively large Weiss temperature (|THETAV;|) was obtained (THETAV;(Ho) = -15 K). A Weiss temperature (THETAV;(Tm) = -8 K) was also obtained for Tm. The |THETAV;| values of other (BDT-TTP)(5)[Ln(NO(3))(5)] salts and (BDT-TTP)(6)[Ce(NO(3))(6)](C(2)H(5)OH)x(x approximately 3) were as follows: |THETAV;|/K = 4 (Er), < or =2 (Ce, Tb, Dy, Yb). The comparatively strong intermolecular magnetic interaction between Ho(3+) ions, which was suggested by the |THETAV;| value, is inconsistent with the traditional image of strongly localized 4f orbitals shielded by the electrons in the outer 5s and 5p orbitals. The dipole interactions between Ln(3+) ions causing the Curie-Weiss behavior and the comparatively large THETAV; value of (BDT-TTP)(5)[Ho(NO(3))(5)] is inconsistent with the data, since the complexes exhibit isostructural properties and there is not a clear relationship between the magnitudes of THETAV; values and those of magnetic moments. Therefore, it is possible that the 4f orbitals of Ho atom are sensitive to the ligand field, which will have an effect on the orbital moment of the Ho(3+) ion and/or produce a small amount of mixing between 4f and ligand orbitals to give rise to "real" intermolecular antiferromagnetic interaction through intermolecular overlapping between pi (BDT-TTP) and ligand orbitals of lanthanide nitrate complex anions.
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Affiliation(s)
- Hengbo Cui
- Research Centre for Spectrochemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Matsumoto T, Kamada Y, Sugimoto T, Tada T, Noguchi S, Nakazumi H, Shiro M, Yoshino H, Murata K. Electrical conducting and magnetic properties of (ethylenedithiotetrathiafulvalenothioquinone-1,3-diselenolemethide)2.FeBr4 (GaBr4) crystals with two different interlayer arrangements of donor molecules. Inorg Chem 2003; 42:5192-201. [PMID: 12924890 DOI: 10.1021/ic030083v] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two donor molecules newly synthesized, dimethylthio- and ethylenedithio-tetrathiafulvalenothioquinone-1,3-diselenolemethides (1 and 2), were used to prepare their charge-transfer (CT) salts with a magnetic FeBr(4)(-) counteranion. For 1, a low electrical conducting 1:1 salt (1.FeBr(4)) was obtained, in which molecules of 1 are tightly dimerized in a one-dimensional (1D) stacking column. On the other hand, 2 gave a 2:1 salt (2(2).FeBr(4)) as two different kinds of plate crystals (I and II). Both I and II possess similar stacking structures of molecules of 2 in each 1D column with a half-cut pipelike structure along the c axis. However, for I, the stacking columns are aligned in the same direction along the a and b axes, while for II they are in the same direction along the a axis, but in the reverse direction along the b axis, resulting in the difference in the relative arrangement of molecules of 2 and FeBr(4)(-) ions between the two crystals. The room-temperature electrical conductivities of the single crystals of I and II were 13.6 and 12.7 S cm(-)(1), respectively. The electrical conducting behavior in I was metallic above 170 K but changed to be semiconducting with a very small activation energy of 7.0 meV in the temperature range 4-170 K. In contrast, II showed the semiconducting behavior in the whole temperature range 77-285 K. The corresponding nonmagnetic GaBr(4)(-) salts with almost the same crystal structure as I and II showed definitively different electrical conducting properties in the metal to semiconductor transition temperature in I as well as in the magnitude of activation energy in the semiconducting region of I and II. The interaction between the d spins of FeBr(4)(-) ions was weak and antiferromagnetic in both I and II, but the magnitude of the spin interaction was unexpectedly larger compared with that in the FeBr(4)(-) salt of the corresponding sulfur derivative of 2 with closer contact between the neighboring FeBr(4)(-) ions. These electrical conducting and magnetic results suggest a significant interaction between the conducting pi electrons and the d spins of FeBr(4)(-) ions located near the columns or layers.
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Affiliation(s)
- Takuya Matsumoto
- Research Institute for Advanced Science and Technology, Osaka Prefecture University, Osaka 599-8570, Japan
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Takimiya K, Kataoka Y, Niihara N, Aso Y, Otsubo T. A general method for the synthesis of alkylenedithio- and bis(alkylenedithio)tetraselenafulvalenes. J Org Chem 2003; 68:5217-24. [PMID: 12816480 DOI: 10.1021/jo034145a] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general synthetic method toward a series of alkylenedithio- and bis(alkylenedithio)tetraselenafulvalenes, i.e., methylenedithio- (MDT-TSF, 1a), ethylenedithio- (EDT-TSF, 1b), propylenedithio- (PDT-TSF, 1c), bis(methylenedithio)- (BMDT-TSF, 2a), bis(ethylenedithio)- (BETS, 2b), and bis(propylenedithio)tetraselenafulvalene (BPDT-TSF, 2c), as superior electron donors for organic conductors has been developed. This method is advantageous to ready access to a series of compounds from common synthetic intermediates, 2-methylthio-3-(2-methoxycarbonylethylthio)-tetraselenafulvalene (6) and 2,6(7')-bis(methylthio)-3,7(6')-bis(2-methoxycarbonylethylthio)tetraselenafulvalene (7), for the asymmetrical alkylenedithio- and symmetrical bis(alkylenedithio)-TSFs, respectively. These key intermediates are readily prepared by phosphite-promoted coupling reactions of 4-methylthio-5-(2-methoxycarbonylethylthio)-1,3-selenole-2-selone (5) or by a reaction of TSF with LDA and methyl 3-thiocyanatopropionate. The latter method provides not only the successful conversion of TSF to these heterocycle derivatives but also a generally acceptable route to them, since TSF is accessible without the toxic and less easily available CSe(2).
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Affiliation(s)
- Kazuo Takimiya
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi-Hiroshima 739-8527, Japan.
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Fujiwara H, Lee HJ, Kobayashi H, Fujiwara E, Kobayashi A. A Novel TTP Donor Containing a PROXYL Radical for Magnetic Molecular Conductors. CHEM LETT 2003. [DOI: 10.1246/cl.2003.482] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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47
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Fujiwara H, Fujiwara E, Kobayashi H. Novel π-Electron Donors for Magnetic Conductors Containing a PROXYL Radical. CHEM LETT 2002. [DOI: 10.1246/cl.2002.1048] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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48
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Izuoka A, Tanabe J, Sugawara T, Kudo T, Saito T, Kawada Y. Charge Transfer Assisted Ferromagnetic Coupling Observed in an Ion-Radical Salt of a Cross-Cyclophane TTF-Based Donor. CHEM LETT 2002. [DOI: 10.1246/cl.2002.910] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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Zhang B, Tanaka H, Fujiwara H, Kobayashi H, Fujiwara E, Kobayashi A. Dual-action molecular superconductors with magnetic anions. J Am Chem Soc 2002; 124:9982-3. [PMID: 12188650 DOI: 10.1021/ja026911l] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dual-action organic superconductors, whose conducting properties can be sharply controlled by an external magnetic field, have been discovered in systems consisting of organic conduction layers based on bis(ethylenedithio)tetraselenafulvalene (BETS) molecules and magnetic anions. Owing to the metamagnetic nature of the anion layers, the superconducting state of kappa-BETS2FeBr4 can be switched on or off by applying the external field. In lambda-BETS2Fe0.4Ga0.6Cl4, exhibiting a field-induced superconducting transition for the field parallel to the conduction plane, the insulating, metallic, and superconducting states can be realized in a stepwise manner by slightly tuning the external magnetic field.
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Affiliation(s)
- Bin Zhang
- Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444-8585, Japan
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