1
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Gisbert Y, Simón Marqués P, Baccini C, Abid S, Saffon-Merceron N, Rapenne G, Kammerer C. Copper-catalysed perarylation of cyclopentadiene: synthesis of hexaarylcyclopentadienes. Chem Sci 2024; 15:9127-9137. [PMID: 38903211 PMCID: PMC11186316 DOI: 10.1039/d4sc02458c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 05/14/2024] [Indexed: 06/22/2024] Open
Abstract
While hexaphenylsilacyclopentadiene (hexaphenylsilole) is viewed as an archetypal Aggregation-Induced Emission (AIE) luminogen, its isostructural hydrocarbon surrogate hexaphenylcyclopentadiene has strikingly never been investigated in this context, most probably due to a lack of synthetic availability. Herein, we report a straightforward synthesis of hexaphenylcyclopentadiene, via the direct perarylation of cyclopentadiene upon copper(i) catalysis under microwave activation, with the formation of six new C-C bonds in a single synthetic operation. Using zirconocene dichloride as a convenient source of cyclopentadiene and a variety of aryl iodides as coupling partners, this copper-catalysed cross-coupling reaction gave rise to a series of unprecedented hexaarylcyclopentadienes. The latter are direct precursors of extended π-conjugated polycyclic compounds, and their cyclodehydrogenation under Scholl reaction conditions yielded helicenic 17,17-diarylcyclopenta[l,l']diphenanthrenes. These structurally complex polyannelated fluorene derivatives can now be prepared in only two synthetic steps from cyclopentadiene.
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Affiliation(s)
- Yohan Gisbert
- CEMES, Université de Toulouse, CNRS 29 Rue Marvig 31055 Toulouse France
| | | | - Caterina Baccini
- CEMES, Université de Toulouse, CNRS 29 Rue Marvig 31055 Toulouse France
| | - Seifallah Abid
- CEMES, Université de Toulouse, CNRS 29 Rue Marvig 31055 Toulouse France
| | - Nathalie Saffon-Merceron
- Université de Toulouse, UPS, Institut de Chimie de Toulouse ICT UAR 2599, 118 Route de Narbonne 31062 Toulouse France
| | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS 29 Rue Marvig 31055 Toulouse France
- Division of Materials Science, Nara Institute of Science and Technology 8916-5 Takayama, Ikoma Nara Japan
| | - Claire Kammerer
- CEMES, Université de Toulouse, CNRS 29 Rue Marvig 31055 Toulouse France
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2
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Omoto K, Shi M, Yasuhara K, Kammerer C, Rapenne G. Extended Tripodal Hydrotris(indazol-1-yl)borate Ligands as Ruthenium-Supported Cogwheels for On-Surface Gearing Motions. Chemistry 2023; 29:e202203483. [PMID: 36695199 DOI: 10.1002/chem.202203483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/22/2023] [Accepted: 01/25/2023] [Indexed: 01/26/2023]
Abstract
This paper reports the synthesis of ruthenium-based molecular gear prototypes composed of a brominated or non-brominated pentaphenylcyclopentadienyl ligand as an anchoring unit and a tripodal ligand with aryl-functionalized indazoles as a rotating cogwheel. Single crystal structures of the ruthenium complexes revealed that the appended aryl groups increase the apparent diameter of the cogwheel rendering them larger than the diameter of the anchoring units and consequently making them suitable for intermolecular gearing motions once the complexes will be adsorbed on a surface.
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Affiliation(s)
- Kenichiro Omoto
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, 630-0192, Japan
| | - Menghua Shi
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, 630-0192, Japan.,Center for Digital Green-innovation, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, 630-0192, Japan
| | - Claire Kammerer
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, 630-0192, Japan.,CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
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3
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Francis S, Rice CR, Scattergood PA, Elliott PIP. Synthesis and characterisation of group 8 tris(1-benzyl-1,2,3-triazol-4-yl)- p-anisolylmethane complexes. Dalton Trans 2022; 51:13692-13702. [PMID: 36001010 DOI: 10.1039/d2dt02503e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The tris(1,2,3-triazol-4-yl)methane framework offers a highly versatile architecture for ligand design, yet the coordination chemistry of this class of ligand remains largely unexplored. We report here the synthesis and characterisation of the homoleptic complexes [M(ttzm)2](PF6)2 (ttzm = tris(1-benzyl-1,2,3-triazol-4-yl)-p-anisolylmethane; M = Fe (Fe), Ru (Ru), Os (Os)). Initial attempts to prepare Ru by reaction of [Ru(p-cymene)Cl2]2 and ttzm also led to the isolation of the heteroleptic complex [Ru(p-cymene)(ttzm)](PF6)2. The structures of [Ru(p-cymene)(ttzm)](PF6)2, [Fe(ttzm)2]2+ (as its BPh4- salt) and Os were solved by X-ray diffraction. The homoleptic Fe(II) and Os(II) containing cations adopt distorted octahedral geometries due to the steric interactions between the ansiole and triazole rings of the ttzm ligands. The homoleptic complexes all adopt a low-spin d6 configuration and exhibit reversible M(II)/M(III) processes (+0.35 to +0.72 V vs. Fc/Fc+). These oxidation processes are cathodically shifted relative to those of related hexatriazole donor based complexes with density functional theory (DFT) calculations showing the metal d-orbitals are destabilised through a π-donor contribution from the triazole rings. The complexes all show prominent UV-visible absorption bands between 350 and 450 nm assigned to transitions of 1MLCT character. Whilst none of the homoleptic complexes are emissive in room temperature fluid solutions, Os is emissive at 77 K in an EtOH/MeOH glass (λmax 472 nm).
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Affiliation(s)
- Samuel Francis
- Department of Chemical Sciences & Centre for Functional Materials, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - Craig R Rice
- Department of Chemical Sciences & Centre for Functional Materials, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - Paul A Scattergood
- Department of Chemical Sciences & Centre for Functional Materials, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - Paul I P Elliott
- Department of Chemical Sciences & Centre for Functional Materials, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
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4
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Gisbert Y, Abid S, Kammerer C, Rapenne G. Divergent Synthesis of Molecular Winch Prototypes. Chemistry 2021; 27:16242-16249. [PMID: 34492156 DOI: 10.1002/chem.202103126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Indexed: 11/10/2022]
Abstract
We report the synthesis of conceptually new prototypes of molecular winches with the ultimate aim to investigate the work performed by a single ruthenium-based molecular motor anchored on a surface by probing its ability to pull a load upon electrically-driven directional rotation. According to a technomimetic design, the motor was embedded in a winch structure, with a long flexible polyethylene glycol chain terminated by an azide hook to connect a variety of molecular loads. The structure of the motor was first derivatized by means of two sequential cross-coupling reactions involving a penta(4-halogenophenyl)cyclopentadienyl hydrotris(indazolyl)borate ruthenium(II) precursor and the resulting benzylamine derivative was next exploited as key intermediate in the divergent synthesis of a family of nanowinch prototypes. A one-pot method involving sequential peptide coupling and Cu-catalyzed azide-alkyne cycloaddition was developed to yield four loaded nanowinches, with load fragments encompassing triptycene, fullerene and porphyrin moieties.
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Affiliation(s)
- Yohan Gisbert
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Seifallah Abid
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Claire Kammerer
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France.,Division of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, Japan
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5
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Nishino T, Martin CJ, Yasuhara K, Rapenne G. Nanocars based on Polyaromatic or Porphyrinic Chassis. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.1050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
| | - Colin J. Martin
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
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6
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Gisbert Y, Abid S, Kammerer C, Rapenne G. Molecular Gears: From Solution to Surfaces. Chemistry 2021; 27:12019-12031. [PMID: 34131971 DOI: 10.1002/chem.202101489] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Indexed: 01/18/2023]
Abstract
This review highlights the major efforts devoted to the development of molecular gears over the past 40 years, from pioneering covalent bis-triptycyl systems undergoing intramolecular correlated rotation in solution, to the most recent examples of gearing systems anchored on a surface, which allow intermolecular transmission of mechanical power. Emphasis is laid on the different strategies devised progressively to control the architectures of molecular bevel and spur gears, as intramolecular systems in solution or intermolecular systems on surfaces, while aiming at increased efficiency, complexity and functionality.
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Affiliation(s)
- Yohan Gisbert
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Seifallah Abid
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Claire Kammerer
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France.,Division of Materials Science, Nara Institute of Science and Technology, 8916-5, Nara, Japan
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7
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Gao S, Gisbert Y, Erbland G, Abid S, Kammerer C, Venturini A, Rapenne G, Ventura B, Armaroli N. Photophysical properties of 1,2,3,4,5-pentaarylcyclopentadienyl-hydrotris(indazolyl)borate ruthenium(II) complexes. Phys Chem Chem Phys 2021; 23:17049-17056. [PMID: 34346431 DOI: 10.1039/d1cp02261j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photophysical properties of heteroleptic rotor-like Ru(ii) complexes containing both a cyclopentadienyl-type ligand and a hydrotris(indazolyl)borate chelating unit with a piano stool structure (Ar5L1-Ru-S1 and L3-Ru-S1) and their corresponding subunits have been investigated. The complexes show peculiar absorption features when compared with their related ligands or fragments. L3-Ru-S1 was found to be non-emissive, while Ar5L1-Ru-S1 showed a weak emission with a quantum yield of 0.27%. With the help of DFT calculations, we demonstrate that the new absorption features can be attributed to ruthenium-based charge transfer transitions which involve the π* orbitals of the phenyl substituents of the cyclopentadienyl ligand.
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Affiliation(s)
- Sheng Gao
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche (CNR-ISOF), Via Gobetti 101, 40129 Bologna, Italy.
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8
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Abid S, Gisbert Y, Kojima M, Saffon-Merceron N, Cuny J, Kammerer C, Rapenne G. Desymmetrised pentaporphyrinic gears mounted on metallo-organic anchors. Chem Sci 2021; 12:4709-4721. [PMID: 34163729 PMCID: PMC8179540 DOI: 10.1039/d0sc06379g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 02/13/2021] [Indexed: 11/21/2022] Open
Abstract
Mastering intermolecular gearing is crucial for the emergence of complex functional nanoscale machineries. However, achieving correlated motion within trains of molecular gears remains highly challenging, due to the multiple degrees of freedom of each cogwheel. In this context, we designed and synthesised a series of star-shaped organometallic molecular gears incorporating a hydrotris(indazolyl)borate anchor to prevent diffusion on the surface, a central ruthenium atom as a fixed rotation axis, and an azimuthal pentaporphyrinic cyclopentadienyl cogwheel specifically labelled to monitor its motion by non-time-resolved Scanning Tunneling Microscopy (STM). Desymmetrisation of the cogwheels was first achieved sterically, i.e. by introducing one tooth longer than the other four. For optimal mechanical interactions, chemical labelling was also investigated as a preferential way to induce local contrast in STM images, and the electronic properties of one single paddle were modulated by varying the porphyrinic scaffold or the nature of the central metal. To reach such a structural diversity, our modular synthetic approach relied on sequential cross-coupling reactions on a penta(p-halogenophenyl)cyclopentadienyl ruthenium(ii) key building block, bearing a single pre-activated p-iodophenyl group. Chemoselective Sonogashira or more challenging Suzuki-Miyaura reactions allowed the controlled introduction of the tagged porphyrinic tooth, and the subsequent four-fold cross-couplings yielded the prototypes of pentaporphyrinic molecular gears for on-surface studies, incorporating desymmetrised cogwheels over 5 nm in diameter.
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Affiliation(s)
- Seifallah Abid
- CEMES, Université de Toulouse, CNRS 29 Rue Marvig F-31055 Toulouse Cedex 4 France
| | - Yohan Gisbert
- CEMES, Université de Toulouse, CNRS 29 Rue Marvig F-31055 Toulouse Cedex 4 France
| | - Mitsuru Kojima
- Division of Materials Science, Nara Institute of Science and Technology, NAIST 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
| | - Nathalie Saffon-Merceron
- Université de Toulouse, UPS, Institut de Chimie de Toulouse ICT FR 2599, 118 Route de Narbonne 31062 Toulouse France
| | - Jérôme Cuny
- LCPQ, Université de Toulouse, CNRS 118 Route de Narbonne F-31062 Toulouse Cedex 9 France
| | - Claire Kammerer
- CEMES, Université de Toulouse, CNRS 29 Rue Marvig F-31055 Toulouse Cedex 4 France
| | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS 29 Rue Marvig F-31055 Toulouse Cedex 4 France
- Division of Materials Science, Nara Institute of Science and Technology, NAIST 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
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9
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Asato R, Martin CJ, Gisbert Y, Abid S, Kawai T, Kammerer C, Rapenne G. Ruthenium complexes of sterically-hindered pentaarylcyclopentadienyl ligands. RSC Adv 2021; 11:20207-20215. [PMID: 35479891 PMCID: PMC9033943 DOI: 10.1039/d1ra03875c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 06/01/2021] [Indexed: 11/21/2022] Open
Abstract
Preparation of chlorine functionalised intermediates has been developed which is well adapted for highly sterically hindered compounds both with either electron rich or poor systems.
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Affiliation(s)
- Ryosuke Asato
- Division of Materials Science
- Nara Institute of Science and Technology, NAIST
- Ikoma
- Japan
- International Collaborative Laboratory for Supraphotoactive Systems
| | - Colin J. Martin
- International Collaborative Laboratory for Supraphotoactive Systems
- NAIST-CEMES
- CNRS UPR 8011
- F-31055 Toulouse Cedex 4
- France
| | - Yohan Gisbert
- CEMES
- Université de Toulouse
- CNRS
- F-31055 Toulouse Cedex 4
- France
| | - Seifallah Abid
- CEMES
- Université de Toulouse
- CNRS
- F-31055 Toulouse Cedex 4
- France
| | - Tsuyoshi Kawai
- Division of Materials Science
- Nara Institute of Science and Technology, NAIST
- Ikoma
- Japan
- International Collaborative Laboratory for Supraphotoactive Systems
| | - Claire Kammerer
- CEMES
- Université de Toulouse
- CNRS
- F-31055 Toulouse Cedex 4
- France
| | - Gwénaël Rapenne
- Division of Materials Science
- Nara Institute of Science and Technology, NAIST
- Ikoma
- Japan
- International Collaborative Laboratory for Supraphotoactive Systems
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10
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Au Yeung KH, Kühne T, Eisenhut F, Kleinwächter M, Gisbert Y, Robles R, Lorente N, Cuniberti G, Joachim C, Rapenne G, Kammerer C, Moresco F. Transmitting Stepwise Rotation among Three Molecule-Gear on the Au(111) Surface. J Phys Chem Lett 2020; 11:6892-6899. [PMID: 32787202 DOI: 10.1021/acs.jpclett.0c01747] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The realization of a train of molecule-gears working under the tip of a scanning tunneling microscope (STM) requires a stable anchor of each molecule to the metal surface. Such an anchor can be promoted by a radical state of the molecule induced by a dissociation reaction. Our results, rationalized by density functional theory calculations, reveal that such an open radical state at the core of star-shaped pentaphenylcyclopentadiene (PPCP) favors anchoring. Furthermore, to allow the transmission of motion by STM manipulation, the molecule-gears should be equipped with specific groups facilitating the tip-molecule interactions. In our case, a tert-butyl group positioned at one tooth end of the gear benefits both the tip-induced manipulation and the monitoring of rotation. With this optimized molecule, we achieve reproducible and stepwise rotations of the single gears and transmit rotations for up to three interlocked units.
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Affiliation(s)
| | | | | | | | - Yohan Gisbert
- CEMES, Université de Toulouse, CNRS, 31055 Toulouse, France
| | - Roberto Robles
- Centro de Fisica de Materiales CFM/MPC (CSIC-UPV/EHU), 20018 Donostia-San Sebastián, Spain
| | - Nicolas Lorente
- Centro de Fisica de Materiales CFM/MPC (CSIC-UPV/EHU), 20018 Donostia-San Sebastián, Spain
- Donostia International Physics Center, 20018 Donostia-S. Sebastian, Spain
| | | | | | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS, 31055 Toulouse, France
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
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11
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Pyykkönen A, Feher R, Köhler FH, Vaara J. Paramagnetic Pyrazolylborate Complexes Tp 2M and Tp* 2M: 1H, 13C, 11B, and 14N NMR Spectra and First-Principles Studies of Chemical Shifts. Inorg Chem 2020; 59:9294-9307. [PMID: 32558559 DOI: 10.1021/acs.inorgchem.0c01176] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The paramagnetic pyrazolylborates Tp2M and Tp*2M (M = Cu, Ni, Co, Fe, Mn, Cr, V) as well as [Tp2M]+ and [Tp*2M]+ (M = Fe, Cr, V) have been synthesized and their NMR spectra recorded. The 1H signal shift ranges vary from ∼30 ppm (Cu(II) and V(III)) to ∼220 ppm (Co(II)), and the 13C signal shift ranges from ∼180 ppm (Fe(III)) to ∼1150 ppm (Cr(II)). The 11B and 14N shifts are ∼360 and ∼730 ppm, respectively. Both negative and positive shifts have been observed for all nuclei. The narrow NMR signals of the Co(II), Fe(II), Fe(III), and V(III) derivatives provide resolved 13C,1H couplings. All chemical shifts have been calculated from first-principles on a modern version of Kurland-McGarvey theory which includes optimized structures, zero-field splitting, and g tensors, as well as signal shift contributions. Temperature dependence in the Fe(II) spin-crossover complex results from the equilibrium of the ground singlet and the excited quintet. We illustrate both the assignment and analysis capabilities, as well as the shortcomings of the current computational methodology.
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Affiliation(s)
- Ari Pyykkönen
- NMR Research Unit, University of Oulu, P.O. Box 3000, Oulu FI-90014, Finland
| | - Robert Feher
- Department Chemie, Technische Universität München, D-85748 Garching, Germany
| | - Frank H Köhler
- Department Chemie, Technische Universität München, D-85748 Garching, Germany
| | - Juha Vaara
- NMR Research Unit, University of Oulu, P.O. Box 3000, Oulu FI-90014, Finland
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12
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Erbland G, Abid S, Gisbert Y, Saffon-Merceron N, Hashimoto Y, Andreoni L, Guérin T, Kammerer C, Rapenne G. Star-Shaped Ruthenium Complexes as Prototypes of Molecular Gears. Chemistry 2019; 25:16328-16339. [PMID: 31603576 DOI: 10.1002/chem.201903615] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/24/2019] [Indexed: 12/13/2022]
Abstract
The design and synthesis of two families of molecular-gear prototypes is reported, with the aim of assembling them into trains of gears on a surface and ultimately achieving controlled intermolecular gearing motion. These piano-stool ruthenium complexes incorporate a hydrotris(indazolyl)borate moiety as tripodal rotation axle and a pentaarylcyclopentadienyl ligand as star-shaped cogwheel, equipped with five teeth ranging from pseudo-1D aryl groups to large planar 2D paddles. A divergent synthetic approach was followed, starting from a pentakis(p-bromophenyl)cyclopentadienyl ruthenium(II) complex as key precursor or from its iodinated counterpart, obtained by copper-catalyzed aromatic Br/I exchange. Subsequent fivefold cross-coupling reactions with various partners allowed high structural diversity to be reached and yielded molecular-gear prototypes with aryl-, carbazole-, BODIPY- and porphyrin-derived teeth of increasing size and length.
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Affiliation(s)
- Guillaume Erbland
- CEMES, Université de Toulouse, CNRS, 29, rue Jeanne Marvig, 31055, Toulouse, France
| | - Seifallah Abid
- CEMES, Université de Toulouse, CNRS, 29, rue Jeanne Marvig, 31055, Toulouse, France
| | - Yohan Gisbert
- CEMES, Université de Toulouse, CNRS, 29, rue Jeanne Marvig, 31055, Toulouse, France
| | - Nathalie Saffon-Merceron
- UPS, Institut de Chimie de Toulouse, Université de Toulouse, ICT FR 2599, 118 route de Narbonne, 31062, Toulouse, France
| | - Yuichiro Hashimoto
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, Japan.,NAIST-CEMES, International Collaborative Laboratory for Supraphotoactive Systems, 31055, Toulouse, France
| | - Leonardo Andreoni
- CEMES, Université de Toulouse, CNRS, 29, rue Jeanne Marvig, 31055, Toulouse, France
| | - Théo Guérin
- CEMES, Université de Toulouse, CNRS, 29, rue Jeanne Marvig, 31055, Toulouse, France
| | - Claire Kammerer
- CEMES, Université de Toulouse, CNRS, 29, rue Jeanne Marvig, 31055, Toulouse, France
| | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS, 29, rue Jeanne Marvig, 31055, Toulouse, France.,Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, Japan.,NAIST-CEMES, International Collaborative Laboratory for Supraphotoactive Systems, 31055, Toulouse, France
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13
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Kammerer C, Erbland G, Gisbert Y, Nishino T, Yasuhara K, Rapenne G. Biomimetic and Technomimetic Single Molecular Machines. CHEM LETT 2019. [DOI: 10.1246/cl.181019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | - Yohan Gisbert
- CEMES, Université de Toulouse, CNRS, Toulouse, France
| | - Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, NAIST, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, NAIST, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS, Toulouse, France
- Division of Materials Science, Nara Institute of Science and Technology, NAIST, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
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14
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Gisbert Y, Abid S, Bertrand G, Saffon-Merceron N, Kammerer C, Rapenne G. Modular synthesis of pentaarylcyclopentadienyl Ru-based molecular machines via sequential Pd-catalysed cross couplings. Chem Commun (Camb) 2019; 55:14689-14692. [DOI: 10.1039/c9cc08384g] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A dissymmetric piano-stool ruthenium(ii) complex as a key building block in the modular synthesis of molecular cogwheel and winch prototypes.
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Infantes L, Moreno JM, Claramunt RM, Sanz D, Alkorta I, Elguero J. The structure of four thallium tris(1H-pyrazol-1-yl)hydroborates in the solid state by X-ray crystallography and in solution by NMR and DFT-GIAO calculations. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.08.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Expedient Synthesis of Thioether-Functionalized Hydrotris(indazolyl)borate as an Anchoring Platform for Rotary Molecular Machines. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800990] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Matsuo H, Toganoh M, Ishida M, Mori S, Furuta H. Stereoretentive Ligand Exchange Reactions of N-Fused Porphyrin Ruthenium(II) Complexes. Inorg Chem 2017; 56:13842-13851. [PMID: 28952311 DOI: 10.1021/acs.inorgchem.7b01972] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The ligand exchange reactions of the ruthenium(II) complex of N-fused tetraphenylporphyrin, Ru(NFp)(CO)2Cl (2), with various anions were investigated. The chloride ligand of the isomers 2a-c was stereoretentively exchanged with bromide (Br-), iodide (I-), and acetate (AcO-) anions in toluene at 100 °C, structures of which were confirmed by 1H NMR as well as single crystal X-ray diffraction analysis. The silver (AgOAc, AgOTf) and boron (NaBPh4) reagents also afforded the corresponding stereoretentive products. On the other hand, the reaction with NaBH4 afforded the hydride complex Ru(NFp)(CO)2H (7) with low stereospecificity, showing a higher reactivity of 2c than other isomers. The ligand dissociation mechanism was proposed with the help of theoretical calculations on the plausible five-coordinated intermediates.
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Affiliation(s)
- Hideaki Matsuo
- Department of Chemistry and Biochemistry, Graduate School of Engineering, and the Center for Molecular Systems, Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Motoki Toganoh
- Department of Chemistry and Biochemistry, Graduate School of Engineering, and the Center for Molecular Systems, Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masatoshi Ishida
- Department of Chemistry and Biochemistry, Graduate School of Engineering, and the Center for Molecular Systems, Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shigeki Mori
- Advanced Research Support Center, Ehime University , Matsuyama 790-8577, Japan
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry, Graduate School of Engineering, and the Center for Molecular Systems, Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
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Valášek M, Mayor M. Spatial and Lateral Control of Functionality by Rigid Molecular Platforms. Chemistry 2017; 23:13538-13548. [PMID: 28766790 DOI: 10.1002/chem.201703349] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Indexed: 11/11/2022]
Abstract
Surface mounted molecular devices have received significant attention in the scientific community because of their unique ability to construct functional materials. The key involves the platform on which the molecular device works on solid substrates, such as in solid-liquid or solid-vacuum interfaces. Here, we outline the concept of rigid molecular platforms to immobilize active functionality atop flat surfaces in a controllable manner. Most of these (multipodal) platforms have at least three anchoring groups to control the spatial arrangement of the protruding functional moieties and form mechanically stable and electronically tuned contacts to the underlying substrate. Another approach is based on employing of flat aromatic scaffolds bearing perpendicular functionalities that form stable lateral assemblies on various surfaces. Emphasis is placed on the need for controllable assembly and separation of these tailor-made molecules that expose functionalities at the molecular scale. The discussions are focused on the different molecular designs realizing functional 3D architectures on surfaces, the role of various anchoring strategies to control the spatial arrangement, and structural considerations controlling physical features like the coupling to the surface or the available space for sterically demanding molecular operations.
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Affiliation(s)
- Michal Valášek
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Marcel Mayor
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Lehn Institute of Functional Materials (LIFM), Sun Yat-Sen University (SYSU), Xingang Rd. W., Guangzhou, P. R. China.,Department of Chemistry, University of Basel, St. Johannsring 19, 4056, Basel, Switzerland
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The hydridotris(3-nitro-1,2,4-triazol-1-yl)borate, a new nitro-substituted electron withdrawing polydentate “scorpionate”-type ligand and related copper and silver phosphane complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.09.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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