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Kharraz H, Alemany P, Canadell E, Le Gal Y, Roisnel T, Cui H, Kim KH, Fourmigué M, Lorcy D. Mixed-ligand, radical, gold bis(dithiolene) complexes: from single-component conductors to controllable NIR-II absorbers. Chem Sci 2024; 15:11604-11616. [PMID: 39055023 PMCID: PMC11268496 DOI: 10.1039/d4sc03238a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Accepted: 06/21/2024] [Indexed: 07/27/2024] Open
Abstract
Neutral radical bis(dithiolene) gold complexes [Au(dt)2]˙ are known to exhibit a strong absorption in the 1400-2000 nm NIR absorption range. Here, we demonstrate that the NIR signature of mixed-ligand bis(dithiolene) gold complexes [Au(dtA)(dtD)]˙ associating two different dithiolene, dtA and dtD, is found at higher energy, out of the range of the homoleptic analogs [Au(dtA)2]˙ and [Au(dtD)2]˙, in the looked-after NIR-II 1000-1400 nm absorption range. An efficient synthetic approach towards precursor mixed-ligand monoanionic gold bis(dithiolene) complexes [Au(dtA)(dtD)]-1 is reported. Using this strategy, no symmetrical complexes are formed and, upon electrocrystallization, no scrambling was observed in solution, allowing for the isolation of radical gold bis(dithiolene) complex such as [Au(bdt)(Et-thiazdt)]˙ (bdt: benzene-1,2-dithiolate; Et-thiazdt: N-ethyl-thiazoline-2-thione-3,4-dithiolate), which behaves as a single-component conductor. It is shown from theoretical calculations that the spin polarization induced by electron repulsions leads to a strong localization of the spin-orbitals, and provides a sound basis to understand, (i) the different ligand-based oxidation potentials, (ii) the NIR optical absorption at notably higher energies and (iii) the larger potential difference of the two redox processes than in the parent symmetric complexes. The solid-state properties of the radical complex [Au(bdt)(Et-thiazdt)]˙ are the consequence of a strongly 1D electronic structure with weakly dimerized chains and electronic localization favoring a semiconducting behavior, stable under pressures up to 18.2 GPa. Altogether, the versatility of the preparation method of [Au(dtA)(dtD)]-1 salts opens the route for a wide library of different mixed-ligand radical complexes [Au(dtA)(dtD)]˙ with simultaneously an adaptable absorption in the NIR-II range and the rich structural chemistry of single-component conductors.
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Affiliation(s)
- Haia Kharraz
- UnivRennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) 35042 Rennes France
| | - Pere Alemany
- Departament de Ciència de Materials i Química Física and Institut de QuímicaTeòrica i Computacional (IQTCUB), Universitat de Barcelona Martí i Franquès 1 08028 Barcelona Spain
| | - Enric Canadell
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC Campus de la UAB 08193 Bellaterra Spain
- Royal Academy of Sciences and Arts of Barcelona, Chemistry Section La Rambla 115 08002 Barcelona Spain
| | - Yann Le Gal
- UnivRennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) 35042 Rennes France
| | - Thierry Roisnel
- UnivRennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) 35042 Rennes France
| | - Hengbo Cui
- Institute of Applied Physics, Department of Physics and Astronomy, Seoul National University Seoul 08826 Korea
| | - Kee Hoon Kim
- Institute of Applied Physics, Department of Physics and Astronomy, Seoul National University Seoul 08826 Korea
| | - Marc Fourmigué
- UnivRennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) 35042 Rennes France
| | - Dominique Lorcy
- UnivRennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) 35042 Rennes France
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2
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Vitré C, Le Gal Y, Vacher A, Roisnel T, Lorcy D, Santana S, Prudêncio M, Pinheiro T, Marques F. Structure-activity relationship of anticancer and antiplasmodial gold bis(dithiolene) complexes. Dalton Trans 2024; 53:11903-11913. [PMID: 38953883 DOI: 10.1039/d4dt01458h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Monoanionic gold bis(dithiolene) complexes were recently shown to display activity against ovarian cancer cells, Gram-positive bacteria, Candida strains and the rodent malaria parasite, P. berghei. To date, only monoanionic gold(III) bis(dithiolene) complexes with a thiazoline backbone substituted with small alkyl chains have been evaluated for biomedical applications. We now analyzed the influence of the length and the hydrophobicity vs. hydrophilicity of these complexes' alkyl chain on their anticancer and antiplasmodial properties. Isomer analogues of these monoanionic gold(III) bis(dithiolene) complexes, this time with a thiazole backbone, were also investigated in order to assess the influence of the nature of the heterocyclic ligand on their overall chemical and biological properties. In this report we present the total synthesis of four novel monoanionic gold(III) bis(dithiolene) complexes with a long alkyl chain and a polyoxygenated (PEG) chain aiming to improve their solubility and biological properties. Our results showed that the complexes with a PEG chain showed promising anticancer and antiplasmodial activities beside improved solubility, a key parameter in drug discovery and development.
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Affiliation(s)
- Constantin Vitré
- 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.
| | - Antoine Vacher
- 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.
| | - Sofia Santana
- iMM-Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Miguel Prudêncio
- iMM-Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Teresa Pinheiro
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Departamento de Engenharia e Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal
| | - Fernanda Marques
- Departamento de Engenharia e Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal
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3
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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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4
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Pintus A, Arca M. 1,2-Diselenolene ligands and related metal complexes: Design, synthesis and applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Wang Y, Tran PM, Dzikovski B, Xie Y, Wei P, Rains AA, Asadi H, Ramasamy RP, Schaefer HF, Robinson GH. A Cationic Magnesium-Based Dithiolene Radical. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuzhong Wang
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Phuong M. Tran
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Boris Dzikovski
- Bruker BioSpin Corporation, 15 Fortune Drive, Billerica, Massachusetts 01821, United States
| | - Yaoming Xie
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Pingrong Wei
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - April A. Rains
- Nano Electrochemistry Laboratory, School of Chemical, Materials and Biomedical Engineering, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Hamid Asadi
- Nano Electrochemistry Laboratory, School of Chemical, Materials and Biomedical Engineering, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Ramaraja P. Ramasamy
- Nano Electrochemistry Laboratory, School of Chemical, Materials and Biomedical Engineering, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Henry F. Schaefer
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Gregory H. Robinson
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
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6
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Serpe A, Pilia L, Balestri D, Marchiò L, Deplano P. Characterization and Structural Insights of the Reaction Products by Direct Leaching of the Noble Metals Au, Pd and Cu with N, N'-Dimethyl-piperazine-2,3-dithione/I 2 Mixtures. Molecules 2021; 26:4721. [PMID: 34443309 PMCID: PMC8400658 DOI: 10.3390/molecules26164721] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/28/2021] [Accepted: 08/01/2021] [Indexed: 11/16/2022] Open
Abstract
In the context of new efficient and safe leaching agents for noble metals, this paper describes the capability of the Me2pipdt/I2 mixture (where Me2pipdt = N,N'-dimethyl-piperazine-2,3-dithione) in organic solutions to quantitatively dissolve Au, Pd, and Cu metal powders in mild conditions (room temperature and pressure) and short times (within 1 h in the reported conditions). A focus on the structural insights of the obtained coordination compounds is shown, namely [AuI2(Me2pipdt)]I3 (1), [Pd(Me2pipdt)2]I2 (2a) and [Cu(Me2pipdt)2]I3 (3), where the metals are found, respectively, in 3+, 2+ and 1+ oxidation states, and of [Cu(Me2pipdt)2]BF4 (4) and [Cu(Me2dazdt)2]I3 (5) (Me2dazdt = N,N'-dimethyl-perhydrodizepine-2,3-dithione) compared with 3. Au(III) and Pd(II) (d8 configuration) form square-planar complexes, whereas Cu(I) (d10) forms tetrahedral complexes. Density functional theory calculations performed on the cationic species of 1-5 help to highlight the nature of the bonding in the different complexes. Finally, the valorization of the noble metals-rich leachates is assessed. Specifically, gold metal is quantitatively recovered from the solution besides the ligands, showing the potential of these systems to promote metal recycling processes.
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Affiliation(s)
- Angela Serpe
- Department of Civil and Environmental Engineering and Architecture, INSTM Unit, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
- Environmental Geology and Geoengineering Institute of the National Research Council (IGAG-CNR), Via Marengo 2, 09123 Cagliari, Italy
| | - Luca Pilia
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy;
| | - Davide Balestri
- Department of Chemical, Life and Environmental Sustainability Sciences, University of Parma, 43124 Parma, Italy;
| | - Luciano Marchiò
- Department of Chemical, Life and Environmental Sustainability Sciences, University of Parma, 43124 Parma, Italy;
| | - Paola Deplano
- Department of Chemical and Soil Sciences, University of Cagliari, Monserrato, 09042 Cagliari, Italy
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7
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Henfling S, Kultaeva A, Pöppl A, Klose J, Kersting B, Domasevitch KV, Krautscheid H. Proton and Electron Transfer in the Formation of a Copper Dithiolene-Based Coordination Polymer. Inorg Chem 2021; 60:9008-9018. [PMID: 34077201 DOI: 10.1021/acs.inorgchem.1c00914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal bis(dithiolene) complexes are promising building blocks for electrically conductive coordination polymers. N-Heterocyclic dithiolene complexes allow their cross-linking via the coordination of N-donor atoms to additional transition metal ions. In this study, we present the formal copper(II) and copper(III) 6,7-quinoxalinedithiolene complexes [Cu(qdt)2]- and [Cu(qdt)2]2- (qdt2-: 6,7-quinoxalinedithiolate), as well as the 2D coordination polymer Cu[Cu(Hqdt)(qdt)] (3). The dithiolene complexes were isolated as (Bu4N)2[Cu(qdt)2] (1), Na[Cu(qdt)2]·4H2O (2a), [Na(acetone)4][Cu(qdt)2] (2b), and [Ni(MeOH)6][Cu(qdt)2]2·2H2O (2c). Their crystal structures reveal nearly planar complexes with a high tendency of π-stacking. For a better understanding of their coordination behavior, the electronic properties are investigated by UV-vis-NIR spectroscopy, cyclic voltammetry, and DFT simulations. The synthesis of the 2D coordination polymer 3 involves the reduction and protonation of the monoanionic copper(III) complex. A combination of powder X-ray diffraction, magnetic susceptibility measurements, as well as IR and EPR spectroscopy confirm that formal [CuII(Hqdt)(qdt)]- units link trigonal planar copper(I) atoms to a dense 2D coordination polymer. The electrical conductivity of 3 at room temperature is 2 × 10-7 S/cm. Temperature dependent conductivity measurements confirm the semiconducting behavior of 3 with an Arrhenius derived activation energy of 0.33 eV. The strong absorption of 3 in the visible and NIR regions of the spectrum is caused by the small optical band gap of Eg,opt = 0.65 eV, determined by diffuse reflectance spectroscopy. This study sheds light on the coordination chemistry of N-heterocyclic dithiolene complexes and may serve as a reference for the future design and synthesis of dithiolene-based coordination polymers with interesting electrical and magnetic properties.
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Affiliation(s)
- Stefan Henfling
- Institute for Inorganic Chemistry, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Anastasia Kultaeva
- Felix Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstraße 5, D-04103 Leipzig, Germany.,Faculty of Chemistry and Biochemistry, Ruhr University Bochum, D-44801 Bochum, Germany
| | - Andreas Pöppl
- Felix Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstraße 5, D-04103 Leipzig, Germany
| | - Jennifer Klose
- Institute for Inorganic Chemistry, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Berthold Kersting
- Institute for Inorganic Chemistry, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Kostiantyn V Domasevitch
- Department of Inorganic Chemistry, University of Kiev, Volodimirska Street 64, UA-25033 Kiev, Ukraine
| | - Harald Krautscheid
- Institute for Inorganic Chemistry, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
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8
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Zemtsova AV, Sokolova NB. Photostabilization Effect of Pyrazolone Azo Dyes on IR Absorbers in Polymer Films. RUSS J APPL CHEM+ 2021. [DOI: 10.1134/s1070427221050116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Perochon R, Barrière F, Jeannin O, Piekara-Sady L, Fourmigué M. A radical mixed-ligand gold bis(dithiolene) complex. Chem Commun (Camb) 2021; 57:1615-1618. [DOI: 10.1039/d0cc07602c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Asymmetry in the electronic structure of a mixed-ligand gold bis(dithiolene) complex explains its peculiar optical, electrochemical and structural features.
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Affiliation(s)
- Romain Perochon
- Univ. Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- Rennes F- 35042
- France
| | - Frédéric Barrière
- Univ. Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- Rennes F- 35042
- France
| | - Olivier Jeannin
- Univ. Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- Rennes F- 35042
- France
| | - Lidia Piekara-Sady
- Institute of Molecular Physics
- Polish Academy of Science
- M. Smoluchowskiego 17
- Poznań 60-179
- Poland
| | - Marc Fourmigué
- Univ. Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- Rennes F- 35042
- France
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10
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Benjamin H, Müller ML, Afanasjevs S, Kamenev KV, Robertson N. Electrochemical deposition of a semiconducting gold dithiolene complex with NIR absorption. Dalton Trans 2020; 49:13786-13796. [PMID: 33000835 DOI: 10.1039/d0dt02174a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here, the synthesis of a new anionic gold dithiolene complex, NBu4·[1-i], and that of its corresponding neutral gold complex 2 is reported. Complex 2 shows strong absorption into the IR, semiconductivity (σRT = 3.06 × 10-7 S cm-1) with an activation energy of 0.25 eV, and weakly temperature dependent paramagnetic susceptibility, indicating strong intermolecular interactions in the solid state. As a consequence of their strong intermolecular interactions, neutral gold dithiolene complexes are often highly insoluble, limiting their utility and processability. Electrochemical deposition is used to deposit conductive films of complex 2, which retain the NIR properties present in the bulk material, indicting that the strong intermolecular interactions are retained in the film.
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Affiliation(s)
- Helen Benjamin
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK.
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11
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Wang Y, Xie Y, Wei P, Blair SA, Cui D, Johnson MK, Schaefer HF, Robinson GH. A Stable Naked Dithiolene Radical Anion and Synergic THF Ring-Opening. J Am Chem Soc 2020; 142:17301-17305. [PMID: 32985175 DOI: 10.1021/jacs.0c08495] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction of the lithium dithiolene radical 2• with the imidazolium salt [{(Me)CN(i-Pr)}2CH]+[Cl]- (in a 1:1 molar ratio) gives the first stable naked anionic dithiolene radical 3•, which, when coupled with hexasulfide, [{(Me)CN(i-Pr)}2CH]+2[S6]2- (4), and N-heterocyclic silylene 5, unexpectedly results in synergic THF ring-opening via a radical mechanism.
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Affiliation(s)
- Yuzhong Wang
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Yaoming Xie
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Pingrong Wei
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Soshawn A Blair
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Dongtao Cui
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Michael K Johnson
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Henry F Schaefer
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
| | - Gregory H Robinson
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, Georgia 30602-2556, United States
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12
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Credendino L, Sproules S. Modulating Iron Spin States with Radical Ligands: A Density Functional Theoretical Study. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900626] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Stephen Sproules
- WestCHEM School of ChemistryUniversity of Glasgow Glasgow G12 8QQ UK
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13
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McGuire J, Miras HN, Richards E, Sproules S. Enabling single qubit addressability in a molecular semiconductor comprising gold-supported organic radicals. Chem Sci 2019; 10:1483-1491. [PMID: 30809365 PMCID: PMC6354843 DOI: 10.1039/c8sc04500c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 11/21/2018] [Indexed: 01/24/2023] Open
Abstract
A bis(dithiolene)gold complex is presented as a model for an organic molecular electron spin qubit attached to a metallic surface that acts as a conduit to electrically address the qubit. A two-membered electron transfer series is developed of the formula [AuIII(adt)2]1-/0, where adt is a redox-active dithiolene ligand that is sequentially oxidized as the series is traversed while the central metal ion remains AuIII and steadfastly square planar. One-electron oxidation of diamagnetic [AuIII(adt)2]1- (1) produces an S = 1/2 charge-neutral complex, [AuIII(adt2 3-˙)] (2) which is spectroscopically and theoretically characterized with a near negligible Au contribution to the ground state. A phase memory time (T M) of 21 μs is recorded in 4 : 1 CS2/CCl4 at 10 K, which is the longest ever reported for a coordination complex possessing a third-row transition metal ion. With increasing temperature, T M dramatically decreases becoming unmeasurable above 80 K as a consequence of the diminishing spin-lattice (T 1) relaxation time fueled by spin-orbit coupling. These relaxation times are 1-2 orders of magnitude shorter for the solid dilution of 2 in isoelectronic [Ni(adt)2] because this material is a molecular semiconductor. Although the conducting properties of this material provide efficient pathways to dissipate the energy through the lattice, it can also be used to electrically address the paramagnetic dopant by tapping into the mild reduction potential to switch magnetism "on" and "off" in the gold complex without compromising the integrity of its structure. These results serve to highlight the need to consider all components of these spintronic assemblies.
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Affiliation(s)
- Jake McGuire
- WestCHEM School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Haralampos N Miras
- WestCHEM School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Emma Richards
- School of Chemistry , Cardiff University , Main Building, Park Place , Cardiff , CF10 3AT , UK
| | - Stephen Sproules
- WestCHEM School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
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14
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Wang Y, Xie Y, Wei P, Schaefer HF, Robinson GH. Redox chemistry of an anionic dithiolene radical. Dalton Trans 2019; 48:3543-3546. [DOI: 10.1039/c8dt04989k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The redox reactivity of a stable anionic dithiolene radical has been explored, giving the corresponding dithiolate and neutral dithiolene dimers.
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Affiliation(s)
- Yuzhong Wang
- Department of Chemistry
- The University of Georgia
- Athens
- USA
| | - Yaoming Xie
- Department of Chemistry
- The University of Georgia
- Athens
- USA
| | - Pingrong Wei
- Department of Chemistry
- The University of Georgia
- Athens
- USA
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15
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Wright IA, Wilson C, Coles SJ, Skabara PJ. Broadband near-IR absorbing Au-dithiolene complexes bearing redox-active oligothiophene ligands. Dalton Trans 2018; 48:107-116. [PMID: 30462113 DOI: 10.1039/c8dt03915a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of three homoleptic, monoanionic gold dithiolene complexes of oligothiophene ligands which coordinate via a central thiophene-3,4-dithiolate chelate are presented. The oligomer chains are three, five and seven thiophenes long and the complexes display hybrid optoelectronic properties featuring characteristics of both the oligothiophene chains and the delocalised metal dithiolene centre. The properties of the complexes have been characterised using a variety of spectroscopic and electrochemical methods complemented by computational studies. Solid state spectroelectrochemistry has revealed that upon oxidation these complexes display intense and broad absorption across the visible spectrum. In attempting to produce nickel analogues of these materials a single crystal of a photo-oxidised nickel dithiolene complex has also been isolated.
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Affiliation(s)
- Iain A Wright
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, UK.
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16
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Wang Y, Hickox HP, Xie Y, Wei P, Blair SA, Johnson MK, Schaefer HF, Robinson GH. A Stable Anionic Dithiolene Radical. J Am Chem Soc 2017; 139:6859-6862. [PMID: 28482154 DOI: 10.1021/jacs.7b03794] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sulfurization of anionic N-heterocyclic dicarbene, [:C{[N(2,6-Pri2C6H3)]2CHCLi}]n (2), with elemental sulfur (in a 1:2 ratio) in Et2O at low temperature gives 3 by inserting two sulfur atoms into the Li-C (i.e., C2 and C4) bonds in polymeric 2. Further reaction of 3 with 2 equiv of elemental sulfur in THF affords 4• via unexpected C-H bond activation, which represents the first anionic dithiolene radical to be structurally characterized in the solid state. Alternatively, 4• may also be synthesized directly by reaction of 1 with sulfur (in a 1:4 ratio) in THF. Reaction of 4• with GeCl2·dioxane gives an anionic germanium(IV)-bis(dithiolene) complex (5). The nature of the bonding in 4• and 5 was probed by experimental and theoretical methods.
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Affiliation(s)
- Yuzhong Wang
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia , Athens, Georgia 30602-2556, United States
| | - Hunter P Hickox
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia , Athens, Georgia 30602-2556, United States
| | - Yaoming Xie
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia , Athens, Georgia 30602-2556, United States
| | - Pingrong Wei
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia , Athens, Georgia 30602-2556, United States
| | - Soshawn A Blair
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia , Athens, Georgia 30602-2556, United States
| | - Michael K Johnson
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia , Athens, Georgia 30602-2556, United States
| | - Henry F Schaefer
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia , Athens, Georgia 30602-2556, United States
| | - Gregory H Robinson
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia , Athens, Georgia 30602-2556, United States
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Sproules S, Eagle AA, George GN, White JM, Young CG. Mononuclear Sulfido-Tungsten(V) Complexes: Completing the Tp*MEXY (M = Mo, W; E = O, S) Series. Inorg Chem 2017; 56:5189-5202. [DOI: 10.1021/acs.inorgchem.7b00331] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephen Sproules
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Aston A. Eagle
- School of Chemistry, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Graham N. George
- Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Jonathan M. White
- School of Chemistry, University of Melbourne, Parkville, Victoria 3010, Australia
- Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Charles G. Young
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
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18
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Kirkpatrick CC, Truong JN, Kowert BA. d-electron count, ion-pairing and diagonal twist angles in metallo-bis(dithiolene) complexes. J Comput Chem 2016; 38:93-100. [DOI: 10.1002/jcc.24524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 10/02/2016] [Indexed: 11/08/2022]
Affiliation(s)
| | - John N. Truong
- Department of Chemistry; Saint Louis University; St. Louis Missouri 63103
| | - Bruce A. Kowert
- Department of Chemistry; Saint Louis University; St. Louis Missouri 63103
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19
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Kennedy SR, Goyal P, Kozar MN, Yennawar HP, Hammes-Schiffer S, Lear BJ. Effect of Protonation upon Electronic Coupling in the Mixed Valence and Mixed Protonated Complex, [Ni(2,3-pyrazinedithiol)2]. Inorg Chem 2016; 55:1433-45. [DOI: 10.1021/acs.inorgchem.5b02035] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Steven R. Kennedy
- Department
of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Puja Goyal
- Department
of Chemistry, University of Illinois at Urbana−Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Morgan N. Kozar
- Department
of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Hemant P. Yennawar
- Department
of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Sharon Hammes-Schiffer
- Department
of Chemistry, University of Illinois at Urbana−Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Benjamin J. Lear
- Department
of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
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20
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Kennedy SR, Kozar MN, Yennawar HP, Lear BJ. Synthesis and characterization of the gold dithiolene monoanion, (Bu4N)[Au(pdt = 2,3-pyrazinedithiol)2]. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.09.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Bühl M, Reimann C, Pantazis DA, Bredow T, Neese F. Geometries of Third-Row Transition-Metal Complexes from Density-Functional Theory. J Chem Theory Comput 2015; 4:1449-59. [PMID: 26621431 DOI: 10.1021/ct800172j] [Citation(s) in RCA: 358] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A set of 41 metal-ligand bond distances in 25 third-row transition-metal complexes, for which precise structural data are known in the gas phase, is used to assess optimized and zero-point averaged geometries obtained from DFT computations with various exchange-correlation functionals and basis sets. For a given functional (except LSDA) Stuttgart-type quasi-relativistic effective core potentials and an all-electron scalar relativistic approach (ZORA) tend to produce very similar geometries. In contrast to the lighter congeners, LSDA affords reasonably accurate geometries of 5d-metal complexes, as it is among the functionals with the lowest mean and standard deviations from experiment. For this set the ranking of some other popular density functionals, ordered according to decreasing standard deviation, is BLYP > VSXC > BP86 ≈ BPW91 ≈ TPSS ≈ B3LYP ≈ PBE > TPSSh > B3PW91 ≈ B3P86 ≈ PBE hybrid. In this case hybrid functionals are superior to their nonhybrid variants. In addition, we have reinvestigated the previous test sets for 3d- (Bühl M.; Kabrede, H. J. Chem. Theory Comput. 2006, 2, 1282-1290) and 4d- (Waller, M. P.; Bühl, M. J. Comput. Chem. 2007, 28, 1531-1537) transition-metal complexes using all-electron scalar relativistic DFT calculations in addition to the published nonrelativistic and ECP results. For this combined test set comprising first-, second-, and third-row metal complexes, B3P86 and PBE hybrid are indicated to perform best. A remarkably consistent standard deviation of around 2 pm in metal-ligand bond distances is achieved over the entire set of d-block elements.
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Affiliation(s)
- Michael Bühl
- School of Chemistry, North Haugh, University of St. Andrews, St. Andrews, Fife KY16 9ST, U.K., and Institut für Physikalische und Theoretische Chemie, Universität Bonn, Wegelerstrasse 12, D-53115 Bonn, Germany
| | - Christoph Reimann
- School of Chemistry, North Haugh, University of St. Andrews, St. Andrews, Fife KY16 9ST, U.K., and Institut für Physikalische und Theoretische Chemie, Universität Bonn, Wegelerstrasse 12, D-53115 Bonn, Germany
| | - Dimitrios A Pantazis
- School of Chemistry, North Haugh, University of St. Andrews, St. Andrews, Fife KY16 9ST, U.K., and Institut für Physikalische und Theoretische Chemie, Universität Bonn, Wegelerstrasse 12, D-53115 Bonn, Germany
| | - Thomas Bredow
- School of Chemistry, North Haugh, University of St. Andrews, St. Andrews, Fife KY16 9ST, U.K., and Institut für Physikalische und Theoretische Chemie, Universität Bonn, Wegelerstrasse 12, D-53115 Bonn, Germany
| | - Frank Neese
- School of Chemistry, North Haugh, University of St. Andrews, St. Andrews, Fife KY16 9ST, U.K., and Institut für Physikalische und Theoretische Chemie, Universität Bonn, Wegelerstrasse 12, D-53115 Bonn, Germany
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Higashino T, Jeannin O, Kawamoto T, Lorcy D, Mori T, Fourmigué M. A Single-Component Conductor Based on a Radical Gold Dithiolene Complex with Alkyl-Substituted Thiophene-2,3-dithiolate Ligand. Inorg Chem 2015; 54:9908-13. [DOI: 10.1021/acs.inorgchem.5b01678] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshiki Higashino
- Institut des Sciences
Chimiques de Rennes (ISCR), Université Rennes 1, UMR CNRS 6226, Campus de Beaulieu, 35042 Rennes, France
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama 2-12-1, Meguro-ku, 152-8552, Japan
| | - Olivier Jeannin
- Institut des Sciences
Chimiques de Rennes (ISCR), Université Rennes 1, UMR CNRS 6226, Campus de Beaulieu, 35042 Rennes, France
| | - Tadashi Kawamoto
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama 2-12-1, Meguro-ku, 152-8552, Japan
| | - Dominique Lorcy
- Institut des Sciences
Chimiques de Rennes (ISCR), Université Rennes 1, UMR CNRS 6226, Campus de Beaulieu, 35042 Rennes, France
| | - Takehiko Mori
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama 2-12-1, Meguro-ku, 152-8552, Japan
| | - Marc Fourmigué
- Institut des Sciences
Chimiques de Rennes (ISCR), Université Rennes 1, UMR CNRS 6226, Campus de Beaulieu, 35042 Rennes, France
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23
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Mebrouk K, Kaddour W, Auban-Senzier P, Pasquier C, Jeannin O, Camerel F, Fourmigué M. Molecular Alloys of Neutral Gold/Nickel Dithiolene Complexes in Single-Component Semiconductors. Inorg Chem 2015; 54:7454-60. [PMID: 26186238 DOI: 10.1021/acs.inorgchem.5b01059] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Control of band filling or doping of molecular (semi)conductors can be performed by substitutional insertion of molecules with a similar shape but a different electron count, with one more or one less electron. This strategy has been explored here within the semiconducting, single-component, radical gold dithiolene complex [AuOC4] bearing para-butoxyphenyl substituents. Alloying with the corresponding neutral nickel dithiolene complex [NiOC4] lacking one electron afforded a complete isostructural series [NiOC4]1-x[AuOC4]x, spanning the whole composition range from x = 0 to x = 1 by 0.1 increments, further characterized by X-ray diffraction and EDX analyses. Magnetic susceptibility data confirm the antiferromagnetic interactions between neighboring radical gold dithiolene complexes. The electrical conductivity increases exponentially with the x gold fraction, while the activation energy remains constant in the more conducting, gold-rich samples. This behavior is tentatively assigned to the tunneling barriers of variable width (with x) but of constant height, separating more conducting gold-rich segments. Comparison of redox potentials for the 1e(-) oxidation and reduction of both [NiOC4] and [AuOC4] dithiolene complexes indicates that the [NiOC4] nickel complex does not act as a dopant for the radical [AuOC4] complex.
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Affiliation(s)
- Kenny Mebrouk
- †Institut des Sciences Chimiques de Rennes (ISCR), Université Rennes 1, UMR CNRS 6226, Campus de Beaulieu, 35042 Rennes, France
| | - Wafa Kaddour
- ‡Laboratoire de Physique des Solides (LPS), Université Paris-Sud, UMR CNRS 8502, Bât. 510, 91405 Orsay, France
| | - Pascale Auban-Senzier
- ‡Laboratoire de Physique des Solides (LPS), Université Paris-Sud, UMR CNRS 8502, Bât. 510, 91405 Orsay, France
| | - Claude Pasquier
- ‡Laboratoire de Physique des Solides (LPS), Université Paris-Sud, UMR CNRS 8502, Bât. 510, 91405 Orsay, France
| | - Olivier Jeannin
- †Institut des Sciences Chimiques de Rennes (ISCR), Université Rennes 1, UMR CNRS 6226, Campus de Beaulieu, 35042 Rennes, France
| | - Franck Camerel
- †Institut des Sciences Chimiques de Rennes (ISCR), Université Rennes 1, UMR CNRS 6226, Campus de Beaulieu, 35042 Rennes, France
| | - Marc Fourmigué
- †Institut des Sciences Chimiques de Rennes (ISCR), Université Rennes 1, UMR CNRS 6226, Campus de Beaulieu, 35042 Rennes, France
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24
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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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25
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26
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Oliveira S, Afonso ML, Dias SIG, Santos IC, Henriques RT, Rabaça S, Almeida M. An Electropolymerisable Pyridine-Functionalised Gold Bis(dithiolene) Complex. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Li XY, Sun YG, Huo P, Shao MY, Ji SF, Zhu QY, Dai J. Metal centered oxidation or ligand centered oxidation of metal dithiolene? Spectral, electrochemical and structural studies on a nickel-4-pyridine-1,2-dithiolate system. Phys Chem Chem Phys 2013; 15:4016-23. [PMID: 23392287 DOI: 10.1039/c3cp44054k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The complex Et(4)N[Ni(4-pedt)(2)] (1) (4-pedt = 1-(pyridine-4-yl) ethylene-1,2-dithiolate) was synthesized to investigate the behaviour of metal dithiolene compounds upon protonation and oxidation by absorption spectroscopy, electrochemistry and structural analyses and to further understand the electronic states of the dithiolene compounds. It is unexpected that the 915 nm NIR transition band is not shifted when H(+) is added, and it is only affected (blue-shifted) when the compound is oxidized. All the evidence of electronic spectra indicates that the NIR band is relevant to the central [Ni(edt)(2)] moiety (edt = ethylenedithiolate), not the behaviour of individual Ni ions or ligands. It is also not the band of intermolecular interaction of a dimer. The moderately intense band appearing at 655 nm upon protonation is assigned to the intramolecular charge-transfer band between the [Ni(edt)(2)] moiety and the pyridine. The redox potentials of the metal dithiolene are sensitive to the protonation of the pyridyl group. The structures of monocationic complex and the protonated compounds [Ni(4-Hpedt)(2)]·ClO(4)·H(2)O (2) and [Ni(4-Hpedt)(2)]·PhSO(3)·2DMF (3) were characterized by single crystal X-ray determination. The structural data demonstrate that the oxidation of the monoanionic dithiolene complex to neutral does not change the Ni-S bond distances obviously, which further indicates that the process is not only the metal centered oxidation.
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Affiliation(s)
- Xin-Yu Li
- Department of Chemistry and Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, Suzhou 215123, People's Republic of China
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28
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Kishore R, Das SK. N-Heterocyclic based new nickel–bis(dithiolene) complexes: Synthesis, characterization and properties. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.11.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Yzambart G, Bellec N, Nasser G, Jeannin O, Roisnel T, Fourmigué M, Auban-Senzier P, Íñiguez J, Canadell E, Lorcy D. Anisotropic Chemical Pressure Effects in Single-Component Molecular Metals Based on Radical Dithiolene and Diselenolene Gold Complexes. J Am Chem Soc 2012; 134:17138-48. [DOI: 10.1021/ja3065649] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gilles Yzambart
- Institut des
Sciences Chimiques
de Rennes, UMR 6226 CNRS-Université de Rennes 1, Matière Condensée et Systèmes
Electroactifs (MaCSE), Campus de Beaulieu, Bât 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, Bât 10A, 35042 Rennes
cedex, France
| | - Ghassan Nasser
- Institut des
Sciences Chimiques
de Rennes, UMR 6226 CNRS-Université de Rennes 1, Matière Condensée et Systèmes
Electroactifs (MaCSE), Campus de Beaulieu, Bât 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, Bât 10A, 35042 Rennes
cedex, France
| | - Thierry Roisnel
- Institut des
Sciences Chimiques
de Rennes, UMR 6226 CNRS-Université de Rennes 1, Matière Condensée et Systèmes
Electroactifs (MaCSE), Campus de Beaulieu, Bât 10A, 35042 Rennes
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, Bât 10A, 35042 Rennes
cedex, France
| | - Pascale Auban-Senzier
- Laboratoire
de Physique des
Solides, UMR 8502 CNRS-Université de Paris-Sud, Bat 510, F-91405 Orsay cedex, France
| | - Jorge Íñiguez
- 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
| | - Dominique Lorcy
- Institut des
Sciences Chimiques
de Rennes, UMR 6226 CNRS-Université de Rennes 1, Matière Condensée et Systèmes
Electroactifs (MaCSE), Campus de Beaulieu, Bât 10A, 35042 Rennes
cedex, France
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30
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Continuous Wave EPR of Radicals in Solids. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/978-94-007-4893-4_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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31
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Dalgleish S, Matsushita MM, Hu L, Li B, Yoshikawa H, Awaga K. Utilizing Photocurrent Transients for Dithiolene-Based Photodetection: Stepwise Improvements at Communications Relevant Wavelengths. J Am Chem Soc 2012; 134:12742-50. [DOI: 10.1021/ja304228c] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Simon Dalgleish
- Department of Chemistry
and Research Centre for Materials Science, Nagoya University, Furo-cho, Chikusa, 464-8602 Nagoya,
Japan
| | - Michio M. Matsushita
- Department of Chemistry
and Research Centre for Materials Science, Nagoya University, Furo-cho, Chikusa, 464-8602 Nagoya,
Japan
| | - Laigui Hu
- Department of Chemistry
and Research Centre for Materials Science, Nagoya University, Furo-cho, Chikusa, 464-8602 Nagoya,
Japan
- Department of Applied
Physics, Zhejiang University of Technology, Hangzhou 310023,
China
| | - Bo Li
- Department of Chemistry
and Research Centre for Materials Science, Nagoya University, Furo-cho, Chikusa, 464-8602 Nagoya,
Japan
- Department of Applied
Physics, Zhejiang University of Technology, Hangzhou 310023,
China
| | - Hirofumi Yoshikawa
- Department of Chemistry
and Research Centre for Materials Science, Nagoya University, Furo-cho, Chikusa, 464-8602 Nagoya,
Japan
| | - Kunio Awaga
- Department of Chemistry
and Research Centre for Materials Science, Nagoya University, Furo-cho, Chikusa, 464-8602 Nagoya,
Japan
- CREST,
JST, Nagoya University, Furo-cho,
Chikusa,
464-8602 Nagoya, Japan
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32
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Neutral Metal 1,2-Dithiolenes: Preparations, Properties and Possible Applications of Unsymmetrical in Comparison to the Symmetrical. CRYSTALS 2012. [DOI: 10.3390/cryst2030762] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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33
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Rabaça S, Cerdeira AC, Oliveira S, Santos IC, Henriques RT, Pereira LC, Coutinho JT, Almeida M. Neutral gold and nickel bis[1-(pyridin-4-yl)-ethylene-1,2-dithiolene] complexes: Synthesis, structure and physical properties. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.03.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hachmann J, Frazier BA, Wolczanski PT, Chan GKL. A theoretical study of the 3d-M(smif)2 complexes: structure, magnetism, and oxidation states. Chemphyschem 2011; 12:3236-44. [PMID: 21954028 DOI: 10.1002/cphc.201100286] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Indexed: 11/09/2022]
Abstract
We carry out a theoretical investigation of the recently reported M(smif)(2) series1,2 and find a number of interesting phenomena. These include complex potential energy surfaces with near-degenerate stationary points, low-lying states, non-trivial electron configurations, as well as non-innocent ligand behavior. The M(smif)(2) exhibit a delicate balance between geometry and electronic structure, which has implications not only for their reactivity but also for controlling their properties through ligand design. We address methodological issues and show how conceptual quantities such as oxidation states and electronic configurations can be extracted through a simple analysis of the electron and spin densities-without a complicated examination of the underlying orbitals.
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Affiliation(s)
- Johannes Hachmann
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA
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35
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Miao Q, Gao J, Wang Z, Yu H, Luo Y, Ma T. Syntheses and characterization of several nickel bis(dithiolene) complexes with strong and broad Near-IR absorption. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.07.046] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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36
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Nonlinear optical response of a symmetrical Au dithiolene complex under ps and ns laser excitation in the infrared and in the visible. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.07.091] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Chakraborty I, Carvalho D, Shirodkar SN, Lahiri S, Bhattacharyya S, Banerjee R, Waghmare U, Ayyub P. Novel hexagonal polytypes of silver: growth, characterization and first-principles calculations. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:325401. [PMID: 21785182 DOI: 10.1088/0953-8984/23/32/325401] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report a study of the relative effects of dimensional and kinetic constraints on the stabilization of metastable, polytypic forms of metallic silver. We show that the hexagonal 4H polytype (hitherto observed only in size-constrained systems) can be produced in the form of bulk thin films by suitably slowing down the growth kinetics. Further, using extremely slow growth conditions, we have been successful in depositing a novel, two-dimensional, metastable polytype (2H) of silver, which is highly reactive (easily oxidized) and has a density 23% lower than normal silver. First-principles calculations based on density functional theory confirm that the 4H structure is relatively stable. However, local stability analysis via a determination of the phonon dispersion of the 2H structure reveals that it is only marginally stable with an energy surface that is rather flat or weakly varying with respect to many of the modes. This makes a large contribution to the configurational entropy and is probably the reason for the metastability of the observed 2H polytype with an unusually large lattice constant along the c-direction.
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Affiliation(s)
- Indrani Chakraborty
- Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Mumbai 400005, India
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McKinnon SDJ, Patrick BO, Lever ABP, Hicks RG. Electronic Structure Investigations of Neutral and Charged Ruthenium Bis(β-diketonate) Complexes of Redox-Active Verdazyl Radicals. J Am Chem Soc 2011; 133:13587-603. [DOI: 10.1021/ja204575u] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stephen D. J. McKinnon
- Department of Chemistry, University of Victoria, P.O. Box 3065 STN CSC, Victoria, BC. V8W 3V6, Canada
| | - Brian O. Patrick
- Crystallography Laboratory, Department of Chemistry, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada
| | - A. B. P. Lever
- Department of Chemistry, York University, Toronto, Ontario, M3J 1P3, Canada
| | - Robin G. Hicks
- Department of Chemistry, University of Victoria, P.O. Box 3065 STN CSC, Victoria, BC. V8W 3V6, Canada
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Dalgleish S, Awaga K, Robertson N. Formation of stable neutral copper bis-dithiolene thin films by potentiostatic electrodeposition. Chem Commun (Camb) 2011; 47:7089-91. [DOI: 10.1039/c1cc12344k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Perochon R, Davidson P, Rouzière S, Camerel F, Piekara-Sady L, Guizouarn T, Fourmigué M. Probing magnetic interactions in columnar phases of a paramagnetic gold dithiolene complex. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02171g] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Aragoni MC, Arca M, Devillanova FA, Isaia F, Lippolis V, Pintus A. Gold(III) Complexes of Asymmetrically Aryl-Substituted 1,2-Dithiolene Ligands Featuring Potential-Controlled Spectroscopic Properties: An Insight into the Electronic Properties of bis(Pyren-1-yl-ethylene-1,2-dithiolato)Gold(III). Chem Asian J 2010; 6:198-208. [DOI: 10.1002/asia.201000525] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ambrosio L, Aragoni MC, Arca M, Devillanova F, Hursthouse M, Huth S, Isaia F, Lippolis V, Mancini A, Pintus A. Synthesis and Characterization of Novel Gold(III) Complexes of Asymmetrically Aryl-Substituted 1,2-Dithiolene Ligands Featuring Potential-Controlled Spectroscopic Properties. Chem Asian J 2010; 5:1395-406. [DOI: 10.1002/asia.200900690] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Sproules S, Benedito FL, Bill E, Weyhermüller T, DeBeer George S, Wieghardt K. Characterization and electronic structures of five members of the electron transfer series [Re(benzene-1,2-dithiolato)3](z) (z = 1+, 0, 1-, 2-, 3-): a spectroscopic and density functional theoretical study. Inorg Chem 2010; 48:10926-41. [PMID: 19831363 DOI: 10.1021/ic9010532] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of ReCl(5) with 3 equiv of a benzene-1,2-dithiolate derivative in CH(3)CN produced, after the addition of [C(8)H(16)N]Br ([C(8)H(16)N](+) is 5-azonia-spiro[4,4]nonane), brownish-green crystals of [C(8)H(16)N][Re(tms)(3)] (1c) and [C(8)H(16)N][Re(Cl(2)-bdt)(3)] (2c), where (tms)(2-) represents 3,6-bis(trimethylsilyl)benzene-1,2-dithiolate and (Cl(2)-bdt)(2-) is 3,6-dichlorobenzene-1,2-dithiolate. Chemical reduction of [Re(bdt)(3)] (3b) with n-butyllithium in the presence of PPh(4)Br yielded [PPh(4)][Re(bdt)(3)] (3c), where (bdt)(2-) is benzene-1,2-dithiolate. The three monoanionic complexes possess a diamagnetic ground state (Re(V), d(2), S = 0). The crystal structures of 1c x 2 CH(3)CN and 2c x C(3)H(6)O have been determined by X-ray crystallography. The electrochemistry establishes that the complexes are members of electron transfer series involving a monocation [Re(V)(L(*))(2)(L)](+) (S = 0(?)), a neutral [Re(V)(L(*))(L)(2)](0) (S = 1/2), a monoanion [Re(V)(L)(3)](1-) (S = 0), a dianion [Re(IV)(L)(3)](2-) (S = 1/2), and a trianion [Re(III)(L)(3)](3-) (S = 1(?)). The unique X-band EPR spectrum of the neutral species clearly describes a diamagnetic Re(V) d(2) central ion with the unpaired electron located in a purely ligand-centered molecular orbital, whereas it is metal-centered in the dianionic form: a Re(IV) d(3) ion with three dithiolate(2-) ligands. S K-edge and Re L-edge X-ray absorption spectroscopy confirms these assignments and furthermore shows that the monoanion has a Re(V) central ion with three dianionic ligands. The geometrical and electronic structures of all members of the electron transfer series have been calculated by density functional theoretical methods, and the S K-pre-edge spectra have been simulated and assigned using a time-dependent DFT protocol.
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Affiliation(s)
- Stephen Sproules
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany.
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Tenn N, Bellec N, Jeannin O, Piekara-Sady L, Auban-Senzier P, Iñiguez J, Canadell E, Lorcy D. A single-component molecular metal based on a thiazole dithiolate gold complex. J Am Chem Soc 2010; 131:16961-7. [PMID: 19873973 DOI: 10.1021/ja907426s] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A single component molecular conductor has been isolated from electrocrystallization of the monoanionic gold bis(dithiolene) complex based on the N-ethyl-1,3-thiazoline-2-thione-4,5-dithiolate (Et-thiazdt) ligand. The crystal structure of the system exhibits layers built from parallel uniform one-dimensional stacks of the planar molecule. At room temperature and ambient pressure the system is semiconducting (0.33 S x cm(-1)) with a small activation energy. However, the single crystal conductivity is strongly pressure dependent reaching 1000 S x cm(-1) at 21 kbar. At 13 kbar there is a crossover between semiconducting and metallic regimes. Thus, the present system is the first well characterized single-component molecular metal without TTF dithiolate ligands. First-principles DFT calculations show that the ground state is antiferromagnetic with a very small band gap. A simulation of the effect of pressure on the electronic structure provides a rationale for the observed variations of the conductivity and gives insight on how to further stabilize the metallic state of the system.
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Affiliation(s)
- Nadine Tenn
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Universite de Rennes 1, Matiere Condensee et Systemes Electroactifs (MaCSE), Campus de Beaulieu, Bat 10A, 35042 Rennes cedex, France
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Bruno G, Almeida M, Artizzu F, Dias JC, Mercuri ML, Pilia L, Rovira C, Ribas X, Serpe A, Deplano P. Innocence and noninnocence of the ligands in bis(pyrazine-2,3-dithiolate and -diselonate) d8-metal complexes. A theoretical and experimental study for the Cu(iii), Au(iii) and Ni(ii) cases. Dalton Trans 2010; 39:4566-74. [DOI: 10.1039/b922626e] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Perochon R, Poriel C, Jeannin O, Piekara-Sady L, Fourmigué M. Chiral, Neutral, and Paramagnetic Gold Dithiolene Complexes Derived from Camphorquinone. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900855] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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LeSuer RJ, Geiger WE. Ligand-Solvent Interactions in a Highly Reduced Metal Chelate Complex: Medium Dependence of the One-Electron Reduction of the bis(Maleonitriledithiolato)Gold Dianion. Inorg Chem 2009; 48:10826-36. [PMID: 19894771 DOI: 10.1021/ic901547f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Robert J. LeSuer
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405
| | - William E. Geiger
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405
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Bis[1,2-diphenyl-1,2-ethylenedithiolato(2-)-kS1,kS2] gold: Preparation, structure and properties. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.05.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Khusniyarov MM, Weyhermüller T, Bill E, Wieghardt K. Tuning the oxidation level, the spin state, and the degree of electron delocalization in homo- and heteroleptic bis(alpha-diimine)iron complexes. J Am Chem Soc 2009; 131:1208-21. [PMID: 19105752 DOI: 10.1021/ja808149k] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The four-coordinate heteroleptic complex [Fe(III)((F)pda(2-))((F)dad*-)] (1) and its homoleptic analogue [Fe(II)((F)dad*-)2] (2), where (F)pda(2-) is the closed-shell ligand N,N'-bis(pentafluorophenyl)-o-phenylenediamide(2-) and (F)dad*- is the singly reduced N,N'-bis(pentafluorophenyl)-2,3-dimethyl-1,4-diazabutadiene pi-radical anion, have been synthesized. X-ray crystallographic studies reveal a twisted tetrahedral geometry of the FeN4 coordination polyhedron in both 1 and 2. The electronic structures of 1 and 2 were probed by magnetic susceptibility measurements, 57Fe Mössbauer and electronic spectroscopy, and density functional theory (DFT) calculations. In spite of their similar geometries and a common triplet ground state (S(t) = 1), the electronic structures of 1, 2, and the previously reported homoleptic analogue [Fe(III)((F)pda(2-))((F)pda*-)] (3), where (F)pda*- is a one-electron-oxidized form of (F)pda(2-), differ. The electronic structure of 2 consists of two (F)dad*- radicals coupled antiferromagnetically to a high-spin Fe(II) center, whereas in 3, only one (F)pda*- radical is coupled antiferromagnetically to an intermediate-spin Fe(III) ion. This ligand mixed-valent species exhibits class-III behavior. Heteroleptic 1 contains a single (F)dad*- radical coupled antiferromagnetically to an intermediate-spin Fe(III) center but behaves as a class-II ligand mixed-valent species. The observed diversity in the electronic structures of 1-3 is ascribed to the difference in the redox potentials of the ligands. Analysis of reduced orbital charges and spin densities obtained from DFT calculations also suggests that the electronic structures of 1-3 are best described as either a high-spin Fe(II) ion coordinated to two radical monoanions (2) or as an intermediate-spin Fe(III) ion coordinated to one radical monoanion and one closed-shell dianion (1, 3).
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Affiliation(s)
- Marat M Khusniyarov
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany.
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Perochon R, Piekara-Sady L, Jurga W, Clérac R, Fourmigué M. Amphiphilic paramagnetic neutral gold dithiolene complexes. Dalton Trans 2009:3052-61. [DOI: 10.1039/b820819k] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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