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Cador A, Kahlal S, Richards GJ, Halet JF, Hill JP. Protic Processes in an Extended Pyrazinacene: The Case of Dihydrotetradecaazaheptacene. Molecules 2024; 29:2407. [PMID: 38792268 DOI: 10.3390/molecules29102407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/14/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024] Open
Abstract
Pyrazinacenes are linearly fused heteroaromatic rings, with N atoms replacing all apical CH moieties. Component rings may exist in a reduced state, having NH groups instead of N, causing cross-conjugation. These compounds have interesting optical and electronic properties, including strong fluorescence in the near-infrared region and photocatalytic properties, leading to diverse possible applications in bio-imaging and organic synthesis, as well as obvious molecular electronic uses. In this study, we investigated the behavior of seven-ring pyrazinacene 2,3,11,12-tetraphenyl-7,16-dihydro-1,4,5,6,7,8,9,12,13,14,15,16,17,18-tetradecaazaheptacene (Ph4H2N14HEPT), with an emphasis on protic processes, including oxidation, tautomerism, deprotonation, and protonation, and the species resulting from those processes. We used computational methods to optimize the structures of the different species and generate/compare molecular orbital structures. The aromaticity of the species generated by the different processes was assessed using the nucleus-independent chemical shifts, and trends in the values were associated with the different transformations of the pyrazinacene core. The computational data were compared with experimental data obtained from synthetic samples of the molecule tBu8Ph4H2N14HEPT.
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Affiliation(s)
- Aël Cador
- French Alternative Energies and Atomic Energy Commission, CEA Saclay, DRF/IRAMIS/NIMBE/LSDRM, F-91191 Gif-sur-Yvette, France
- Ecole Nationale Supérieure de Chimie de Rennes (ENSCR), CNRS, Institut des Sciences Chimiques de Rennes (ISCR), University of Rennes, UMR 6226, 11 Allée de Beaulieu, F-35708 Rennes, France
| | - Samia Kahlal
- Ecole Nationale Supérieure de Chimie de Rennes (ENSCR), CNRS, Institut des Sciences Chimiques de Rennes (ISCR), University of Rennes, UMR 6226, 11 Allée de Beaulieu, F-35708 Rennes, France
| | - Gary J Richards
- Department of Applied Chemistry, Graduate School of Engineering and Science, Shibaura Institute of Technology, Fukasaku 307, Minuma-ku, Saitama-shi 337-8570, Saitama, Japan
| | - Jean-François Halet
- Ecole Nationale Supérieure de Chimie de Rennes (ENSCR), CNRS, Institut des Sciences Chimiques de Rennes (ISCR), University of Rennes, UMR 6226, 11 Allée de Beaulieu, F-35708 Rennes, France
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Ibaraki, Japan
| | - Jonathan P Hill
- Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba 305-0044, Ibaraki, Japan
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Liu J, Sum K, Groizard T, Halet JF, Johnson SA. Theoretical and DFT Study of Atypical Pentanuclear [( iPr 3P)Ni] 5H n ( n = 4, 6, 8) Clusters: What are the Rules? Inorg Chem 2023; 62:20888-20900. [PMID: 38069675 DOI: 10.1021/acs.inorgchem.3c03335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
The structure, bonding, and properties of a series of atypical pentanuclear nickel hydride clusters supported by electron-rich iPr3P of the type [(iPr3P)Ni]5Hn (n = 4, 6, 8; H4, H6, H8) and their anionic models where iPr3P are substituted by H- (H4', H6', H8') were investigated by density functional theory (DFT) calculations. All clusters were calculated to adopt a similar square pyramidal core geometry. Calculations indicate singlet ground states with small singlet-triplet gaps for H4 and H6, similar to previously reported experimental values. Molecular orbital theory description clusters were investigated using the simplified model complexes [HNi]5Hn5- (n = 4, 6, 8; H4', H6', H8'). The results show that there are three skeletal electron pairs (SEPs) in H4'. The addition of two molecules of H2 to form H6' and H8' results in the partial or full occupation of two degenerate MOs (e* set) that give two SEPs and one SEP, respectively. Indeed, the occupation of these low-lying weakly antibonding orbitals governs the multielectron chemistry available for these clusters and plays a role in their unique reactivity.
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Affiliation(s)
- Junyang Liu
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, Ontario N9B 3P4, Canada
| | - Kethya Sum
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, Ontario N9B 3P4, Canada
| | - Thomas Groizard
- Institut des Sciences Chimiques de Rennes (ISCR)─UMR 6226, Université Rennes, CNRS, F-35000 Rennes, France
- Laboratoire de Chimie Quantique, UMR7177, Institut Le Bel, Université de Strasbourg, CNRS, 4 rue Blaise Pascal, F-67000 Strasbourg, France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes (ISCR)─UMR 6226, Université Rennes, CNRS, F-35000 Rennes, France
- CNRS-Saint-Gobain─NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
| | - Samuel A Johnson
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, Ontario N9B 3P4, Canada
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Bouteiller H, Fontaine B, Mori T, Gascoin F, Halet JF, Berthebaud D. Synthesis, Crystal and Electronic Structure, and Thermal Conductivity Investigation of the Hollandite-like Cs xCr 5Te 8 Phases (0.73 < x < 1). Inorg Chem 2023; 62:16905-16912. [PMID: 37782294 DOI: 10.1021/acs.inorgchem.3c02590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
This article presents a comprehensive study on the synthesis and structural and thermal conductivity properties of cesium-inserted chromium tellurides of formula CsxCr5Te8. Single crystals of three different compositions (x = 0.73, 0.91, and 0.97) were successfully synthesized and suggested the existence of a solid solution in the range 0.73 < x < 1. Through a detailed single-crystal characterization, the complete structure of these compounds is determined, revealing a distinct B-type hollandite-like structural form derived from the hollandite structure, in contrast to the more commonly observed A-type pseudo-hollandite in AM5X8-type chalcogenides (A = cation, M = transition metal, and X = chalcogen). Periodic density functional theory calculations predict the Cs0.73Cr5Te8 composition as the most stable, with a metallic conductive behavior. The thermal conductivity of bulk CsxCr5Te8 samples is measured to be 1.4 W m-1 K-1 at 300 K and increases with temperature up to 2 W m-1 K-1 at 673 K.
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Affiliation(s)
- Hugo Bouteiller
- Laboratoire CRISMAT, ENSICAEN, UNICAEN, CNRS, Normandie Univ, UMR, Caen 6508, France
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Bruno Fontaine
- Univ Rennes, CNRS, Ecole Nationale Supérieure de Chimie de Rennes (ENSCR), Institut des Sciences Chimiques de Rennes (ISCR), UMR 6226, Rennes F-35000, France
- Saint-Cyr Coëtquidan Military Academy, CReC, Guer F-56380, France
| | - Takao Mori
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8671, Japan
| | - Franck Gascoin
- Laboratoire CRISMAT, ENSICAEN, UNICAEN, CNRS, Normandie Univ, UMR, Caen 6508, France
| | - Jean-François Halet
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
| | - David Berthebaud
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
- Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMN, Nantes F-44000, France
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Kar S, Bairagi S, Halet JF, Ghosh S. 16-Vertex oblato- hypho-titanaborane [(Cp*Ti) 2B 14H 18]. Chem Commun (Camb) 2023; 59:11676-11679. [PMID: 37695761 DOI: 10.1039/d3cc03952h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
Although Lipscomb predicted in 1977 that supra-icosahedral boron clusters would be viable, their synthesis has been impeded by the unavailability of appropriate synthetic methodologies. Herein, we report the first examples of the open 16-vertex oblato-hypho-titanaborane clusters [(Cp*Ti)2B14H17R] (1: R = H; 2: R = Me) having a non-Wadean 19-skeletal-electron-pair count. Interestingly, these clusters show a six-membered [Ti2B4] open face, which could lead to closo-19-vertex clusters.
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Affiliation(s)
- Sourav Kar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Subhash Bairagi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Jean-François Halet
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.
| | - Sundargopal Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
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Wang HH, Wei J, Bigdeli F, Rouhani F, Su HF, Wang LX, Kahlal S, Halet JF, Saillard JY, Morsali A, Liu KG. Monocarboxylate-protected two-electron superatomic silver nanoclusters with high photothermal conversion performance. Nanoscale 2023; 15:8245-8254. [PMID: 37073517 DOI: 10.1039/d3nr00571b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The first series of monocarboxylate-protected superatomic silver nanoclusters was synthesized and fully characterized by X-ray diffraction, fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and electrospray ionization mass spectrometry (ESI-MS). Specifically, compounds [Ag16(L)8(9-AnCO2)12]2+ (L = Ph3P (I), (4-ClPh)3P (II), (2-furyl)3P (III), and Ph3As (IV)) were prepared by a solvent-thermal method under alkaline conditions. These clusters exhibit a similar unprecedented structure containing a [Ag8@Ag8]6+ metal kernel, of which the 2-electron superatomic [Ag8]6+ inner core shows a flattened and puckered hexagonal bipyramid of S6 symmetry. Density functional theory calculations provide a rationalization of the structure and stability of these 2-electron superatoms. Results indicate that the 2 superatomic electrons occupy a superatomic molecular orbital 1S that has a substantial localization on the top and bottom vertices of the bipyramid. The π systems of the anthracenyl groups, as well as the 1S HOMO, are significantly involved in the optical and photothermal behavior of the clusters. The four characterized nanoclusters show high photothermal conversion performance in sunlight. These results show that the unprecedented use of mono-carboxylates in the stabilization of Ag nanoclusters is possible, opening the door for the introduction of various functional groups on their cluster surface.
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Affiliation(s)
- Hao-Hai Wang
- Ningxia Key Laboratory for Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan, Ningxia 750021, China.
| | - Jianyu Wei
- Ningxia Key Laboratory for Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan, Ningxia 750021, China.
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F-35000 Rennes, France.
| | - Fahime Bigdeli
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran 14115175, Iran.
| | - Farzaneh Rouhani
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran 14115175, Iran.
| | - Hai-Feng Su
- State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, 361005, China
| | - Ling-Xiao Wang
- Ningxia Key Laboratory for Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan, Ningxia 750021, China.
| | - Samia Kahlal
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F-35000 Rennes, France.
| | - Jean-François Halet
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
| | - Jean-Yves Saillard
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F-35000 Rennes, France.
| | - Ali Morsali
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran 14115175, Iran.
| | - Kuan-Guan Liu
- Ningxia Key Laboratory for Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan, Ningxia 750021, China.
- State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, 361005, China
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Wei J, MacLeod Carey D, Halet JF, Kahlal S, Saillard JY, Muñoz-Castro A. From 8- to 18-Cluster Electrons Superatoms: Evaluation via DFT Calculations of the Ligand-Protected W@Au 12(dppm) 6 Cluster Displaying Distinctive Electronic and Optical Properties. Inorg Chem 2023; 62:3047-3055. [PMID: 36734972 DOI: 10.1021/acs.inorgchem.2c03771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The iconic W@Au12 icosahedral bare cluster reaches the favorable closed-shell superatomic electron configuration 1S2 1P6 1D10, making it an 18-cluster electron (18-ce) superatom. Here, we pursue the evaluation of a ligand-protected counterpart based on the construction of a fully phosphine-protected [W@Au12(dppm)6] cluster strongly related to the characterized [Au13(dppm)6]5+ homometallic counterpart. The later cluster has the same total number of valence electrons as the former but is considered an 8-ce superatom with 1S2 1P6 configuration. The fundamental differences between 8- and 18-ce species are investigated. The character of the frontier orbitals varies from 1P/1D in the 8-ce case to a 1D/ligand for 18-ce species, enabling an efficient charge transfer toward the ligands upon irradiation, being interesting for electron injection in optoelectronic devices and black absorbers applications. Excited-state properties are also revisited, showing different geometrical and electronic structure variations between 8- and 18-ce species. Moreover, the continuum between the 8- and 18-ce limits has been explored by varying the nature of the encapsulated dopant between group 6 and group 11. The transition between the 8- and 18-ce counts can be formally situated between Pt (8-ce) and Ir (18-ce). Thus, 18-ce derivatives obtained as doped counterparts of homometallic gold clusters can introduce useful alternatives to achieve different properties in related structural motifs, which can be further explored owing to their extension of the well-established versatility of current gold nanoclusters.
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Affiliation(s)
- Jianyu Wei
- Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, Univ Rennes, CNRS, F-35000Rennes, France
| | - Desmond MacLeod Carey
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, Santiago7500912, Chile
| | - Jean-François Halet
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba305-0044, Japan
| | - Samia Kahlal
- Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, Univ Rennes, CNRS, F-35000Rennes, France
| | - Jean-Yves Saillard
- Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, Univ Rennes, CNRS, F-35000Rennes, France
| | - Alvaro Muñoz-Castro
- Facultad de Ingeniería, Arquitectura y Diseño, Universidad San Sebastián, Bellavista 7, Santiago8420524, Chile
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Zhang M, Grasset F, Masubuchi Y, Shimada T, Nguyen TKN, Dumait N, Renaud A, Cordier S, Berthebaud D, Halet JF, Uchikoshi T. Enhanced NH 3 Sensing Performance of Mo Cluster-MoS 2 Nanocomposite Thin Films via the Sulfurization of Mo 6 Cluster Iodides Precursor. Nanomaterials (Basel) 2023; 13:478. [PMID: 36770439 PMCID: PMC9921185 DOI: 10.3390/nano13030478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
The high-performance defect-rich MoS2 dominated by sulfur vacancies as well as Mo-rich environments have been extensively studied in many fields, such as nitrogen reduction reactions, hydrogen evolution reactions, as well as sensing devices for NH3, which are attributed to the under-coordinated Mo atoms playing a significant role as catalytic sites in the defect area. In this study, the Mo cluster-MoS2 composite was creatively synthesized through a one-step sulfurization process via H2/H2S gas flow. The Mo6 cluster iodides (MIs) coated on the fluorine-doped tin oxide (FTO) glass substrate via the electrophoretic deposition method (i.e., MI@FTO) were used as a precursor to form a thin-film nanocomposite. Investigations into the structure, reaction mechanism, and NH3 gas sensing performance were carried out in detail. The results indicated that during the gas flowing, the decomposed Mo6 cluster iodides played the role of template and precursor, forming complicated Mo cluster compounds and eventually producing MoS2. These Mo cluster-MoS2 thin-film nanocomposites were fabricated and applied as gas sensors for the first time. It turns out that after the sulfurization process, the response of MI@FTO for NH3 gas increased three times while showing conversion from p-type to n-type semiconductor, which enhances their possibilities for future device applications.
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Affiliation(s)
- Meiqi Zhang
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
- Research Center for Functional Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
- CNRS–Saint-Gobain–NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Fabien Grasset
- CNRS–Saint-Gobain–NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR)–UMR 6226, F-35000 Rennes, France
| | - Yuji Masubuchi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Toshihiro Shimada
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Thi Kim Ngan Nguyen
- CNRS–Saint-Gobain–NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
- International Center for Young Scientists, ICYS-SENGEN, Global Networking Division, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Noée Dumait
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR)–UMR 6226, F-35000 Rennes, France
| | - Adèle Renaud
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR)–UMR 6226, F-35000 Rennes, France
| | - Stéphane Cordier
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR)–UMR 6226, F-35000 Rennes, France
| | - David Berthebaud
- CNRS–Saint-Gobain–NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Jean-François Halet
- CNRS–Saint-Gobain–NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Tetsuo Uchikoshi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
- Research Center for Functional Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
- CNRS–Saint-Gobain–NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
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Zhang W, Berthebaud D, Halet JF, Mori T. Electronic Configurations of 3d Transition-Metal Compounds Using Local Structure and Neural Networks. J Phys Chem A 2022; 126:7373-7381. [PMID: 36178210 DOI: 10.1021/acs.jpca.2c03901] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Machine learning (ML) methods extract statistical relationships between inputs and results. When the inputs are solid-state crystal structures, structure-property relationships can be obtained. In this work, we investigate whether a simple neural network is able to learn the 3d orbital occupations for the transition-metal (TM) centers in crystalline inorganic solid-state compounds using only the local structure around the transition-metal centers described by rotationally invariant fingerprints based on spherical harmonics and one-hot elemental encoding. A multilayer neural network trained on density functional theory (DFT) results of about 1800 samples was developed and showed good performance in predicting the TM orbital occupations (for both spin channels). We study in detail how the local structure affects the predictions of the local properties and how they provide physical insights for the design of a future machine learning model for materials chemistry. The proposed ML method is illustrated in practical application by predicting local magnetic moments of the transition-metal atoms in a full set of inorganic structures with large unit cells. Although less accurate compared to the experimental data, the ML results compared well with the DFT results, suggesting the feasibility of electronic property prediction based only on structure input.
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Affiliation(s)
- Wenhao Zhang
- WPI-MANA, National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba305-0044, Japan.,Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba305-8671, Japan
| | - David Berthebaud
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba305-0044, Japan
| | - Jean-François Halet
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba305-0044, Japan
| | - Takao Mori
- WPI-MANA, National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba305-0044, Japan.,Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba305-8671, Japan
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9
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Kole GK, Košćak M, Amar A, Majhen D, Božinović K, Brkljaca Z, Ferger M, Michail E, Lorenzen S, Friedrich A, Krummenacher I, Moos M, Braunschweig H, Boucekkine A, Lambert C, Halet JF, Piantanida I, Müller-Buschbaum K, Marder TB. Methyl Viologens of Bis-(4'-Pyridylethynyl)Arenes - Structures, Photophysical and Electrochemical Studies, and their Potential Application in Biology. Chemistry 2022; 28:e202200753. [PMID: 35502627 PMCID: PMC9400870 DOI: 10.1002/chem.202200753] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Indexed: 12/20/2022]
Abstract
A series of bis‐(4’‐pyridylethynyl)arenes (arene=benzene, tetrafluorobenzene, and anthracene) were synthesized and their bis‐N‐methylpyridinium compounds were investigated as a class of π‐extended methyl viologens. Their structures were determined by single crystal X‐ray diffraction, and their photophysical and electrochemical properties (cyclic voltammetry), as well as their interactions with DNA/RNA were investigated. The dications showed bathochromic shifts in emission compared to the neutral compounds. The neutral compounds showed very small Stokes shifts, which are a little larger for the dications. All of the compounds showed very short fluorescence lifetimes (<4 ns). The neutral compound with an anthracene core has a quantum yield of almost unity. With stronger acceptors, the analogous bis‐N‐methylpyridinium compound showed a larger two‐photon absorption cross‐section than its neutral precursor. All of the dicationic compounds interact with DNA/RNA; while the compounds with benzene and tetrafluorobenzene cores bind in the grooves, the one with an anthracene core intercalates as a consequence of its large, condensed aromatic linker moiety, and it aggregates within the polynucleotide when in excess over DNA/RNA. Moreover, all cationic compounds showed highly specific CD spectra upon binding to ds‐DNA/RNA, attributed to the rare case of forcing the planar, achiral molecule into a chiral rotamer, and negligible toxicity toward human cell lines at ≤10 μM concentrations. The anthracene‐analogue exhibited intracellular accumulation within lysosomes, preventing its interaction with cellular DNA/RNA. However, cytotoxicity was evident at 1 μM concentration upon exposure to light, due to singlet oxygen generation within cells. These multi‐faceted features, in combination with its two‐photon absorption properties, suggest it to be a promising lead compound for development of novel light‐activated theranostic agents.
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Affiliation(s)
- Goutam Kumar Kole
- Institut für Anorganische Chemie, and, Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Department of Chemistry, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Tamil Nadu, 603203, India
| | - Marta Košćak
- Ruđer Bošković Institute, 10000, Zagreb, Croatia
| | - Anissa Amar
- Laboratoire de Physique et Chimie Quantiques, Université Mouloud Mammeri, Tizi Ouzou, 15000 Tizi-Ouzou, Algeria
| | | | | | | | - Matthias Ferger
- Institut für Anorganische Chemie, and, Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Evripidis Michail
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Sabine Lorenzen
- Institut für Anorganische Chemie, and, Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie, and, Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Ivo Krummenacher
- Institut für Anorganische Chemie, and, Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Michael Moos
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Holger Braunschweig
- Institut für Anorganische Chemie, and, Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Abdou Boucekkine
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, Institut des Sciences Chimiques de Rennes UMR 6226, 35000, Rennes, France
| | - Christoph Lambert
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Jean-François Halet
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, Institut des Sciences Chimiques de Rennes UMR 6226, 35000, Rennes, France.,CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
| | | | - Klaus Müller-Buschbaum
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
| | - Todd B Marder
- Institut für Anorganische Chemie, and, Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
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10
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Nanda Pradhan A, Keshari Rout B, Halet JF, Ghosh S. Metal-rich clusters: synthesis, structure and bonding of metallaboranes featuring µ5-boride and triply bridging borylene units. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Wei J, Kahlal S, Halet JF, Muñoz-Castro A, Saillard JY. Ligand-Induced Cuboctahedral versus Icosahedral Core Isomerism within Eight-Electron Heterocyclic-Carbene-Protected Gold Nanoclusters. Inorg Chem 2022; 61:8623-8628. [PMID: 35640274 DOI: 10.1021/acs.inorgchem.2c01022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The controlled structural modification of ligand-protected gold clusters is evaluated by a proper variation of the size and shape of N-heterocyclic carbene (NHC) ligands. Density functional theory calculations show that the Au13 core of [Au13(NHC)8Br4]+ can be shaped into an icosahedron and/or a so far unexpected cuboctahedron depending on the sterical effect inferred by the NHC ligand side arms. As a result, the cluster properties can be modified, encouraging further exploration on controlled core isomerization in ligated gold cluster chemistry.
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Affiliation(s)
- Jianyu Wei
- Institut des Sciences Chimiques de Rennes, Univ Rennes, CNRS, UMR 6226, Rennes F-35000, France
| | - Samia Kahlal
- Institut des Sciences Chimiques de Rennes, Univ Rennes, CNRS, UMR 6226, Rennes F-35000, France
| | - Jean-François Halet
- Laboratory for Innovative Key Materials and Structures, National Institute for Materials Science─Saint-Gobain, CNRS, IRL 3629, Tsukuba 305-0044, Japan
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, El Llano Subercaseaux, Santiago 2801, Chile
| | - Jean-Yves Saillard
- Institut des Sciences Chimiques de Rennes, Univ Rennes, CNRS, UMR 6226, Rennes F-35000, France
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12
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Wei J, Marchal R, Astruc D, Kahlal S, Halet JF, Saillard JY. Looking at platinum carbonyl nanoclusters as superatoms. Nanoscale 2022; 14:3946-3957. [PMID: 35229849 DOI: 10.1039/d1nr08216g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Although the chemistry of carbonyl-protected platinum nanoclusters is well established, their bonding mode remains poorly understood. In most of them, the average Pt oxidation state is zero or slightly negative, leading to the apparent average configuration 5d10 6sε (ε = 0 or very small) and the apparent conclusion that metal-metal bonding cannot arise from the completely filled 5d shell nor from the empty (or almost empty) 6s orbitals. However, DFT calculations show in fact that in these species the actual average configuration is 5d10-x 6sx, which provides to the whole cluster a significant total number of 6s electrons that ensures metal-metal bonding. This ("excited") average configuration is to be related to that of coinage metals in ligated group 11 nanoclusters (nd10 (n + 1)sx). Calculations show that metal-metal bonding in most of these platinum nanoclusters can be rationalized within the concepts of superatoms and supermolecules, in a similar way as for group 11 nanoclusters. The "excited" 5d10-x 6sx configuration results from a level crossing between 5d combinations and 6s combinations, the former transferring their electrons to the latter. This level crossing, which does not exist in the bare Ptn clusters, is induced by the ligand shell, the role of which being thus not innocent with respect to metal-metal bonding.
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Affiliation(s)
- Jianyu Wei
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F 35000 Rennes, France.
- ISM, UMR CNRS 5255, University of Bordeaux, 351 Cours de la Libération, F-33405 Talence Cedex, France
| | - Rémi Marchal
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F 35000 Rennes, France.
| | - Didier Astruc
- ISM, UMR CNRS 5255, University of Bordeaux, 351 Cours de la Libération, F-33405 Talence Cedex, France
| | - Samia Kahlal
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F 35000 Rennes, France.
| | - Jean-François Halet
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F 35000 Rennes, France.
- CNRS - Saint-Gobain - NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan.
| | - Jean-Yves Saillard
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F 35000 Rennes, France.
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13
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Wei J, Kahlal S, Halet JF, Saillard JY, Muñoz-Castro A. Insight Into the Stability and Electronic and Optical Properties of N-Heterocyclic Carbene Analogues of Halogen/Phosphine-Protected Au 13 Superatomic Clusters. J Phys Chem A 2022; 126:536-545. [PMID: 35044183 DOI: 10.1021/acs.jpca.1c09084] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Atomically precise gold nanoclusters (AuNCs) belong to a relevant area offering useful templates with tunable properties toward functional nanostructures. In this work, we explored the feasible incorporation of N-heterocyclic carbenes (NHCs), as part of the protecting-ligand shell in AuNCs. Our results, which are based on the substitution of phosphine ligands in experimentally characterized AuNCs by NHCs in various eight-electron superatoms Au13 and M4Au9 (M = Cu, Ag), indicate similar electronic structure and stability but somewhat different optical properties. These findings support the feasible obtention of novel targets for explorative synthetic efforts featuring NHC ligands on medium-sized species based on the recurrent Au13 icosahedral core. The hypothetical species appear to be interesting templates for building blocks in nanostructured materials with tuned properties, which encourage experimental exploration of ligand versatility in homo- and heterometallic superatomic clusters.
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Affiliation(s)
- Jianyu Wei
- Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, Université de Rennes, CNRS, F-35000 Rennes, France
| | - Samia Kahlal
- Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, Université de Rennes, CNRS, F-35000 Rennes, France
| | - Jean-François Halet
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
| | - Jean-Yves Saillard
- Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, Université de Rennes, CNRS, F-35000 Rennes, France
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, 8910188 Santiago, Chile
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14
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Gam S, Messaoudi S, Halet JF, Boucekkine A. How do structural factors determine the linear and non-linear optical properties of fluorene-containing quadrupolar fluorophores? A theoretical answer. NEW J CHEM 2022. [DOI: 10.1039/d2nj01192a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The linear and non-linear optical properties of the different components of a series of push–push and pull–pull quadrupolar fluorophore derivatives are investigated.
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Affiliation(s)
- Safa Gam
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) – UMR 6226, F35000 Rennes, France
- Faculty of Sciences of Bizerte FSB, University of Carthage, 7021 Jarzouna, Tunisia
- Laboratory of Materials, Molecules and Applications, IPEST, University of Carthage, Sidi Bou Said Road, B.P. 51, 2070 La Marsa, Tunisia
| | - Sabri Messaoudi
- Faculty of Sciences of Bizerte FSB, University of Carthage, 7021 Jarzouna, Tunisia
- Laboratory of Materials, Molecules and Applications, IPEST, University of Carthage, Sidi Bou Said Road, B.P. 51, 2070 La Marsa, Tunisia
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
| | - Jean-François Halet
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) – UMR 6226, F35000 Rennes, France
- CNRS – Saint-Gobain – NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
| | - Abdou Boucekkine
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) – UMR 6226, F35000 Rennes, France
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15
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Braun C, Mereacre L, Chen Z, Slabon A, Vincent D, Rocquefelte X, Halet JF. Eu- and Tb-adsorbed Si 3N 4 and Ge 3N 4: tuning the colours with one luminescent host. RSC Adv 2022; 12:32318-32326. [DOI: 10.1039/d2ra04663f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 11/01/2022] [Indexed: 11/11/2022] Open
Abstract
The adsorption of europium and terbium at the grain boundaries of bulk β-Si3N4 and β-Ge3N4 and the synergic combination of both results in intriguing luminescence properties of all compounds (red, green, orange and yellow).
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Affiliation(s)
- Cordula Braun
- Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM), Herrmann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Liuda Mereacre
- Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM), Herrmann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Zheng Chen
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Adam Slabon
- Chair of Inorganic Chemistry, University of Wuppertal, Gaussstr. 20, 42119 Wuppertal, Germany
| | - David Vincent
- Univ. Rennes – CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, 35042 Rennes, France
| | - Xavier Rocquefelte
- Univ. Rennes – CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, 35042 Rennes, France
| | - Jean-François Halet
- CNRS – Saint-Gobain – NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
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16
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Bag R, Gayen S, Mohapatra S, Antharjanam PS, Halet JF, Ghosh S. Planar triple-decker and capped octahedral clusters of group-6 transition metals. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Babizhetskyy V, Jardin R, Gautier R, Fontaine B, Halet JF. Flux synthesis, crystal structure and electronic properties of the layered rare earth metal boride silicide Er3Si5–x
B. An example of a boron/silicon-ordered structure derived from the AlB2 structure type. Zeitschrift für Naturforschung B 2021. [DOI: 10.1515/znb-2021-0143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The ternary rare earth metal boride silicide Er3Si5–x
B (x = 1.17) was synthesized from the elements using the tin flux method. It crystallizes in a new structure type in the space group R32 (a = 6.5568(1) Å, c = 24.5541(1) Å, Z = 6). The structural arrangement can be derived from the AlB2 structure type with boron/silicon ordering in the layered metalloid substructure made of [Si5B] hexagons. The presence or absence of the boron atoms involved in this ordered structure is discussed on the basis of difference Fourier syntheses and structural analysis, in relation with the binary parent structures AlB2 and Yb3Si5 (Th3Pd5 type). The electronic and bonding properties of Er3Si5–x
B were analyzed and discussed via density functional theory (DFT) calculations and a crystal orbital Hamiltonian population (COHP) bonding analysis.
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Affiliation(s)
- Volodymyr Babizhetskyy
- Department of Inorganic Chemistry , Ivan Franko National University of Lviv , Kyryla i Mefodiya Str. 6, UA-79005 , Lviv , Ukraine
| | - Régis Jardin
- Bruker AXS GmbH , Östliche Rheinbrückenstraße 49 , D-76187 Karlsruhe , Germany
| | - Régis Gautier
- Univ. Rennes, CNRS, Ecole Nationale Supérieure de Chimie de Rennes (ENSCR), Institut des Sciences Chimiques de Rennes (ISCR), UMR 6226 , F-35000 Rennes , France
| | - Bruno Fontaine
- Univ. Rennes, CNRS, Ecole Nationale Supérieure de Chimie de Rennes (ENSCR), Institut des Sciences Chimiques de Rennes (ISCR), UMR 6226 , F-35000 Rennes , France
| | - Jean-François Halet
- CNRS–Saint-Gobain–NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS) , Tsukuba , 305-0044 , Japan
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18
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Ripoche N, Betou M, Philippe C, Trolez Y, Mongin O, Dudek M, Pokladek Z, Matczyszyn K, Samoc M, Sahnoune H, Halet JF, Roisnel T, Toupet L, Cordier M, Moxey GJ, Humphrey MG, Paul F. Two-photon absorption properties of multipolar triarylamino/tosylamido 1,1,4,4-tetracyanobutadienes. Phys Chem Chem Phys 2021; 23:22283-22297. [PMID: 34585692 DOI: 10.1039/d1cp03346h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and characterization of four new tetracyanobutadiene (TCBD) derivatives (1, 3c and 4b-c) incorporating tosylamido and 4-triphenylamino moieties are reported. Along with those of five closely related or differently branched TCBDs derivatives (2, 3a-b, 4c and 5), their linear and (third-order) nonlinear optical properties were investigated by electronic absorption spectroscopy and Z-scan measurements. Among these compounds, the tri-branched compounds 3c and 5 are the most active two-photon absorbers, with effective cross-sections of 275 and 350 GM at 900 nm, respectively. These properties are briefly discussed with the help of DFT calculations, focussing on structural and electronic factors, and contextualized with results obtained previously for related compounds.
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Affiliation(s)
- Nicolas Ripoche
- Univ Rennes, CNRS, ENSCR, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France. .,Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia.
| | - Marie Betou
- Univ Rennes, CNRS, ENSCR, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Clotilde Philippe
- Univ Rennes, CNRS, ENSCR, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Yann Trolez
- Univ Rennes, CNRS, ENSCR, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Olivier Mongin
- Univ Rennes, CNRS, ENSCR, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Marta Dudek
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland.
| | - Ziemowit Pokladek
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland.
| | - Katarzyna Matczyszyn
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland.
| | - Marek Samoc
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland.
| | - Hiba Sahnoune
- Département de Chimie, Faculté des Sciences, Université M'Hamed Bouguara de Boumerdes, 35000, Boumerdes, Algeria.,Laboratoire de Physique et Chimie Quantique, Université Mouloud Mammeri de Tizi Ouzou, 15000, Tizi Ouzou, Algeria
| | - Jean-François Halet
- Univ Rennes, CNRS, ENSCR, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France. .,CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan.
| | - Thierry Roisnel
- Univ Rennes, CNRS, ENSCR, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Loic Toupet
- Univ Rennes, CNRS, Institut de Physique de Rennes (IPR) - UMR 6251, F-35000 Rennes, France
| | - Marie Cordier
- Univ Rennes, CNRS, ENSCR, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Graeme J Moxey
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia.
| | - Mark G Humphrey
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia.
| | - Frédéric Paul
- Univ Rennes, CNRS, ENSCR, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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19
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Wei J, Rodríguez-Kessler PL, Halet JF, Kahlal S, Saillard JY, Muñoz-Castro A. On Heteronuclear Isoelectronic Alternatives to [Au13(dppe)5Cl2]3+: Electronic and Optical Properties of the 18-Electron Os@[Au12(dppe)5Cl2] Cluster from Relativistic Density Functional Theory Computations. Inorg Chem 2021; 60:8173-8180. [DOI: 10.1021/acs.inorgchem.1c00799] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jianyu Wei
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) − UMR 6226, Rennes F-35000, France
| | - Peter L. Rodríguez-Kessler
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, Santiago 8320000, Chile
| | - Jean-François Halet
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) − UMR 6226, Rennes F-35000, France
- CNRS-Saint Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
| | - Samia Kahlal
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) − UMR 6226, Rennes F-35000, France
| | - Jean-Yves Saillard
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) − UMR 6226, Rennes F-35000, France
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, Santiago 8320000, Chile
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20
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Levytskyi V, Isnard O, Kremer RK, Babizhetskyy V, Fontaine B, Rocquefelte X, Halet JF, Gumeniuk R. Crystal, electronic and magnetic structures of a novel series of intergrowth carbometalates R 4Co 2C 3 (R = Y, Gd, Tb). Dalton Trans 2021; 50:4202-4209. [PMID: 33683265 DOI: 10.1039/d1dt00420d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of new ternary isostructural R4Co2C3 (R = Y, Gd, Tb) carbides was synthesized by annealing of arc-melted stoichiometric samples. The crystal structure of Tb4Co2C3 [space group P2/m, Pearson symbol mP18, a = 12.754(2) Å, b = 3.6251(4) Å, c = 7.0731(9) Å, β = 105.601(6)°] was solved by direct methods from neutron powder diffraction data collected at 100 K. The room temperature unit cell parameters of the new phases were determined by X-ray powder diffraction technique. The crystal structure of Tb4Co2C3 is characterized as an intergrowth structure resulting from the stacking of alternating TbCoC (YCoC-type) and Tb2C (anti-CdCl2 type) fragments with a 2 : 1 ratio. Tb4Co2C3 orders ferromagnetically at TC = 35(1) K, whereas the isostructural Gd4Co2C3 reveals two magnetic transitions at TC1 = 82(3) K and TC2 = 13(2) K. Density functional theory (DFT) calculations confirm that the magnetic moments of the R4Co2C3 (R = Gd, Tb) carbides are exclusively due to the rare-earth elements. Y4Co2C3 is shown to be a Pauli-paramagnet by experimental and theoretical studies.
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Affiliation(s)
- Volodymyr Levytskyi
- Institut für Experimentelle Physik, TU Bergakademie Freiberg, Leipziger Str. 23, 09596 Freiberg, Germany.
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21
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Prakash R, Haridas A, Bakthavachalam K, Roisnel T, Halet JF, Ghosh S. Chemistry of group 5 metallaboranes with heterocyclic thiol ligands: a combined experimental and theoretical study. Dalton Trans 2021; 50:4036-4044. [PMID: 33662076 DOI: 10.1039/d0dt04362a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Thermolysis of [(Cp*Nb)2(B2H6)2], 1b (Cp* = η5-C5Me5), with 2-mercaptobenzothiazole, C6H4NSCSH (MBT), and 2-mercaptobenzoxazole, C6H4NOCSH (MBO), yielded hydrogen substituted compounds 2 and 3 with a general formula [(Cp*Nb)2(B2H6)(B2H5L)] (2: L = C6H4NSCS and 3: L = C6H4NOCS). A similar reaction of 1b with Ph2Se2 yielded the monosubstituted derivative [(Cp*Nb)2(B2H6){B2H5(PhSe)}], 4. All further efforts towards persubstitution of 1b under various drastic conditions were unfruitful. In parallel, in an effort to find a better synthetic route to the known Ta-aziridine complex [Cp*TaBH(C7H4NS2)CH2S2NC6H4], Cp*TaCl4 was treated with a 2-mercaptobenzothiazolyl-based borate ligand Na[H2B(C6H4NSCS)2]. Surprisingly, the reaction led to the formation of the half-sandwich trichloroaryltantalum(v) complex [Cp*TaCl3{κ2-N,S-C6H4NSCS}], 5, containing a heterocyclic thiol ligand. Using an alternative method complex 5 was isolated in good yield when Cp*TaCl4 was treated with the potassium salt of 2-mercaptobenzothiazole K[C6H4NSCS]. All the compounds were characterized by 1H, 11B{1H}, and 13C{1H} NMR spectroscopy, and their structures were unequivocally established by crystallographic analysis.
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Affiliation(s)
- Rini Prakash
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India.
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22
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Amar A, Elkechai A, Halet JF, Paul F, Boucekkine A. Two-photon absorption of dipolar and quadrupolar oligothiophene-cored chromophore derivatives containing terminal dimesitylboryl moieties: a theoretical (DFT) structure–property investigation. NEW J CHEM 2021. [DOI: 10.1039/d1nj01467f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Electron density difference between the S2 state reached by the 2PA and the ground state S0 (ΔμS2–S0 = 1.70 D) for 2TM-NMe3+.
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Affiliation(s)
- Anissa Amar
- Laboratoire de Physique et Chimie Quantiques, Faculté des Sciences, Université Mouloud Mammeri de Tizi-Ouzou, 15000 Tizi-Ouzou, Algeria
| | - Aziz Elkechai
- Laboratoire de Physique et Chimie Quantiques, Faculté des Sciences, Université Mouloud Mammeri de Tizi-Ouzou, 15000 Tizi-Ouzou, Algeria
| | - Jean-François Halet
- CNRS-Saint Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
| | - Frédéric Paul
- Univ Rennes, CNRS, ISCR UMR 6226, 35042 Rennes, France
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23
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Groizard T, Kahlal S, Halet JF. Zwitterionic Mixed-Valence Species for the Design of Neutral Clocked Molecular Quantum-Dot Cellular Automata. Inorg Chem 2020; 59:15772-15779. [PMID: 33074686 DOI: 10.1021/acs.inorgchem.0c02207] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Mixed-valence compounds can be used for the design of molecular quantum-dot cellular automata (QCA). Here, we investigate the QCA properties of a three-dot "Y"-shaped functionalized zwitterionic neutral closo-carborane model 1-(3,5-{Cp(dHpe)Fe-C≡C-}2(C6H3))-10-Cp(dHpe)Fe-C≡C-closo-1-CB9H8 (1) (Cp = cyclopentadienyl (η5-C5H5) and dHpe = 1,2-bis(phosphino)ethane (H2PCH2CH2PH2)) as a neutral clocked molecular half-cell. DFT results clearly demonstrate that 1 can display simultaneously the two most basic properties necessary for clocked QCA operation, i.e., bistable switching behavior and clocked control. This is possible due to the three stable states (two active and one null) of 1, corresponding to occupation of each of the three iron-ethynyl groups by the positive charge. In addition, the proximal electronic bias effects can be overcome by the zwitterionic nature of 1, which could be imposed by external counterions, rendering these effects more predictable.
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Affiliation(s)
- Thomas Groizard
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F-35000 Rennes, France
| | - Samia Kahlal
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F-35000 Rennes, France
| | - Jean-François Halet
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F-35000 Rennes, France
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24
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Wei J, Halet JF, Kahlal S, Saillard JY, Muñoz-Castro A. Toward the Formation of N-Heterocyclic-Carbene-Protected Gold Clusters of Various Nuclearities. A Comparison with Their Phosphine-Protected Analogues from Density Functional Theory Calculations. Inorg Chem 2020; 59:15240-15249. [PMID: 33021784 DOI: 10.1021/acs.inorgchem.0c02219] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The structure and bonding of a series of selected phosphine-protected gold clusters (Aun-P) of nuclearity varying from n = 6 to 13 were investigated by density functional theory (DFT) calculations and compared to those of the hypothetical homologues in which phosphines were replaced by N-heterocyclic carbene (NHC) analogues (Aun-C). Both the Aun-P and Aun-C series exhibit similar stabilities and structural features, except for n = 6, where some differences are noted. The NHC ligands are found to be even slightly more strongly bonded to the gold core (by a few kilocalories per mole per ligand) than phosphines. Investigation of the optical properties of both series using time-dependent DFT calculations indicates similarities in the nature and energies of the UV-vis optical transitions and, consequently, relatively similar shapes of the simulated spectra, with a general blue-shift tendency when going from Aun-P to Aun-C. The fluorescence behavior observed experimentally for some of the Aun-P species is expected to occur also for their Aun-C analogues, which can be extended to other carbene-ligand-protected nanoclusters. Our results show that it should be possible to stabilize gold clusters with NHC ligands, in relation to the seminal Au13-ligand-protected core, offering novel building blocks for the design of nanostructured materials with various properties.
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Affiliation(s)
- Jianyu Wei
- Institut des Sciences Chimiques de Rennes, Univ Rennes, CNRS, UMR 6226, F-35000 Rennes, France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes, Univ Rennes, CNRS, UMR 6226, F-35000 Rennes, France
| | - Samia Kahlal
- Institut des Sciences Chimiques de Rennes, Univ Rennes, CNRS, UMR 6226, F-35000 Rennes, France
| | - Jean-Yves Saillard
- Institut des Sciences Chimiques de Rennes, Univ Rennes, CNRS, UMR 6226, F-35000 Rennes, France
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, El Llano Subercaseaux, Santiago 2801, Chile
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25
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Joseph B, Prakash R, Dorcet V, Roisnel T, Halet JF, Ghosh S. Metal Centered commo-Bis(metallaselenaborane): Heterotrimetallic Systems Bearing a Zn(II) Center. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benson Joseph
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Rini Prakash
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Vincent Dorcet
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR
6226, F-35000 Rennes, France
| | - Thierry Roisnel
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR
6226, F-35000 Rennes, France
| | - Jean-François Halet
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR
6226, F-35000 Rennes, France
| | - Sundargopal Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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26
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Prakash R, Halet JF, Ghosh S. Polyhedral [M 2B 5] Metallaborane Clusters and Derivatives: An Overview of Their Structural Features and Chemical Bonding. Molecules 2020; 25:E3179. [PMID: 32664614 PMCID: PMC7397089 DOI: 10.3390/molecules25143179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/03/2020] [Accepted: 07/06/2020] [Indexed: 11/16/2022] Open
Abstract
A large number of metallaborane clusters and their derivatives with various structural arrangements are known. Among them, M2B5 clusters and derivatives constitute a significant class. Transition metals present in these species span from group 4 to group 7. Their structure can vary from oblatonido, oblatoarachno, to arachno type open structures. Many of these clusters appear to be hypoelectronic and are often considered as 'rule breakers' with respect to the classical Wade-Mingos electron counting rules. This is due to their unique highly oblate (flattened) deltahedral structures featuring a cross-cluster M-M interaction. Many theoretical calculations were performed to elucidate their electronic structure and chemical bonding properties. In this review, the synthesis, structure, and electronic aspects of the transition metal M2B5 clusters known in the literature are discussed. The chosen examples illustrate how, in synergy with experiments, computational results can provide additional valuable information to better understand the electronic properties and electronic requirements which govern their architecture and thermodynamic stability.
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Affiliation(s)
- Rini Prakash
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India;
| | - Jean-François Halet
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, F-35000 Rennes, France
| | - Sundargopal Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India;
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27
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Wei J, Marchal R, Astruc D, Saillard JY, Halet JF, Kahlal S. Theoretical Analysis of the Mackay Icosahedral Cluster Pd 55 (PiPr 3 ) 12 (μ 3 -CO) 20 : An Open-Shell 20-Electron Superatom. Chemistry 2020; 26:5508-5514. [PMID: 32045497 DOI: 10.1002/chem.202000447] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Indexed: 12/31/2022]
Abstract
The electronic structure of the spherical Mackay icosahedral nanosized cluster Pd55 (PiPr3 )12 (μ3 -CO)20 is analyzed by using DFT calculations. Results reveal that it can be considered as a regular superatom with a "magic" electron count of 20, characterized by a 1S2 1P6 1D10 2S2 jellium configuration. Its open shell nature is associated with partial occupation of non-jellium, 4d-type, levels located on the interior of the Pd55 kernel. This shows that the superatom model can be used to rationalize the bonding and stability of spherical ligated group 10 clusters, despite their apparent 0-electron count.
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Affiliation(s)
- Jianyu Wei
- CNRS, Institut des Sciences Chimiques de Rennes (ISCR)-UMR 6226, Univ Rennes, 35000, Rennes, France
| | - Rémi Marchal
- CNRS, Institut des Sciences Chimiques de Rennes (ISCR)-UMR 6226, Univ Rennes, 35000, Rennes, France
| | - Didier Astruc
- ISM, UMR CNRS 5255, University of Bordeaux, 351 Cours de la Libération, 33405, Talence Cedex, France
| | - Jean-Yves Saillard
- CNRS, Institut des Sciences Chimiques de Rennes (ISCR)-UMR 6226, Univ Rennes, 35000, Rennes, France
| | - Jean-François Halet
- CNRS, Institut des Sciences Chimiques de Rennes (ISCR)-UMR 6226, Univ Rennes, 35000, Rennes, France
| | - Samia Kahlal
- CNRS, Institut des Sciences Chimiques de Rennes (ISCR)-UMR 6226, Univ Rennes, 35000, Rennes, France
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28
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Gendron F, Groizard T, Le Guennic B, Halet JF. Electronic Properties of Poly-Yne Carbon Chains and Derivatives with Transition Metal End-Groups. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901112] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Frédéric Gendron
- ISCR (Institut des Sciences Chimiques de Rennes); Univ Rennes, CNRS; UMR 6226, F -35000 Rennes France
| | - Thomas Groizard
- ISCR (Institut des Sciences Chimiques de Rennes); Univ Rennes, CNRS; UMR 6226, F -35000 Rennes France
| | - Boris Le Guennic
- ISCR (Institut des Sciences Chimiques de Rennes); Univ Rennes, CNRS; UMR 6226, F -35000 Rennes France
| | - Jean-François Halet
- ISCR (Institut des Sciences Chimiques de Rennes); Univ Rennes, CNRS; UMR 6226, F -35000 Rennes France
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29
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Prakash R, Pradhan AN, Jash M, Kahlal S, Cordier M, Roisnel T, Halet JF, Ghosh S. Diborane(6) and Its Analogues Stabilized by Mono-, Bi-, and Trinuclear Group 7 Templates: Combined Experimental and Theoretical Studies. Inorg Chem 2020; 59:1917-1927. [PMID: 31934757 DOI: 10.1021/acs.inorgchem.9b03217] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Irradiation of [Re2(CO)10] in the presence of BH3·thf resulted in the formation of several rhenium diborane(6) species, for example, [{(OC)4Re}{Re(CO)3}2(μ3-η2:η2:η2-B2H6)(μ-H)], 1; [{(OC)4Re}2{Re(CO)3}(μ3-η2:η2:η1-B2H6)(μ-H)], 2; and [{(OC)4Re}2(μ-η2:η2-B2H6)], 3, comprising diverse coordination modes of the [B2H6]2- ligand. Compound 1 contains a tris(bidentate) [B2H6]2- unit, whereas 2 consists of an unsymmetrically bound [μ3-η2:η2:η1-B2H6]2- ligand. In contrast, the irradiation of [Mn2(CO)10] with BH3·thf yielded only the Mn analogue of 1, [{(OC)4Mn}{Mn(CO)3}2(μ3-η2:η2:η2-B2H6)(μ-H)], 1'. In an attempt to generate the bimetallic Mn-diborane(6), we have carried out the reaction of 1' with PCy3 under photolytic conditions. The reaction led to the formation of two single base stabilized unsymmetrical diborane(5) species, [{Mn(CO)3}{Mn(CO)2PCy3}(μ-η2:η2-B2H5·PCy3)(μ-H)], 4, and [{Mn(CO)2PCy3}(η3-B2H5·PCy3)], 5. As [B2H6]2- and [B2H5·PCy3]- are isoelectronic, the bondings in 4 and 5 are analogous to that of diborane(6) species 1-3. All the new species have been characterized spectroscopically, and their structures were further confirmed by single-crystal X-ray diffraction studies. DFT-type quantum chemical calculations were carried out that provided insight into the bonding interaction of [B2H6]2- and [B2H5·PCy3]- with the M(CO)n fragments.
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Affiliation(s)
- Rini Prakash
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Alaka Nanda Pradhan
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Madhuri Jash
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Samia Kahlal
- CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226 , Univ Rennes , F-35000 Rennes , France
| | - Marie Cordier
- CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226 , Univ Rennes , F-35000 Rennes , France
| | - Thierry Roisnel
- CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226 , Univ Rennes , F-35000 Rennes , France
| | - Jean-François Halet
- CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226 , Univ Rennes , F-35000 Rennes , France
| | - Sundargopal Ghosh
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
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30
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Joseph B, Prakash R, Pathak K, Roisnel T, Kahlal S, Halet JF, Ghosh S. A combined experimental and theoretical study of bimetallic bis- and tris-homocubane analogues. NEW J CHEM 2020. [DOI: 10.1039/c9nj05117a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Various bimetallic bis- and tris-homocubane analogues of group 9 transition metals have been isolated and structurally characterized employing Li[BH2E3] (E = S or Se).
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Affiliation(s)
- Benson Joseph
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Rini Prakash
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Kriti Pathak
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Thierry Roisnel
- Univ. Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes
- UMR 6226
- F-35000 Rennes
| | - Samia Kahlal
- Univ. Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes
- UMR 6226
- F-35000 Rennes
| | - Jean-François Halet
- Univ. Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes
- UMR 6226
- F-35000 Rennes
| | - Sundargopal Ghosh
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
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31
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Wang Q, Halet JF, Kahlal S, Muñoz-Castro A, Saillard JY. Electron count and electronic structure of bare icosahedral Au 32and Au 33ionic nanoclusters and ligated derivatives. Stable models with intermediate superatomic shell fillings. Phys Chem Chem Phys 2020; 22:20751-20757. [DOI: 10.1039/d0cp03735d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The Au32icosahedral cage can adapt its shape to several electron counts.
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Affiliation(s)
- Qi Wang
- Univ Rennes
- CNRS
- ISCR-UMR 6226
- F-35000 Rennes
- France
| | | | - Samia Kahlal
- Univ Rennes
- CNRS
- ISCR-UMR 6226
- F-35000 Rennes
- France
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares
- Facultad de Ingenieria
- Universidad Autonoma de Chile
- Santiago
- Chile
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32
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Richards GJ, Cador A, Yamada S, Middleton A, Webre WA, Labuta J, Karr PA, Ariga K, D’Souza F, Kahlal S, Halet JF, Hill JP. Amphiprotism-Coupled Near-Infrared Emission in Extended Pyrazinacenes Containing Seven Linearly Fused Pyrazine Units. J Am Chem Soc 2019; 141:19570-19574. [DOI: 10.1021/jacs.9b10952] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gary J. Richards
- Department of Chemistry, Ochanomizu University, Otsuka 2-1-1, Bunkyo-ku, Tokyo 112-8610, Japan
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Aël Cador
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, 35000 Rennes, France
| | - Shinji Yamada
- Department of Chemistry, Ochanomizu University, Otsuka 2-1-1, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Anna Middleton
- Department of Chemistry, University of North Texas, 1155 Union Circle, 305070, Denton, Texas 76203, United States
| | - Whitney A. Webre
- Department of Chemistry, University of North Texas, 1155 Union Circle, 305070, Denton, Texas 76203, United States
| | - Jan Labuta
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Paul A. Karr
- Department of Physical Sciences and Mathematics, Wayne State College, 111 Main Street, Wayne, Nebraska 68787, United States
| | - Katsuhiko Ariga
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-0827, Japan
| | - Francis D’Souza
- Department of Chemistry, University of North Texas, 1155 Union Circle, 305070, Denton, Texas 76203, United States
| | - Samia Kahlal
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, 35000 Rennes, France
| | - Jean-François Halet
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, UMR 6226, 35000 Rennes, France
| | - Jonathan P. Hill
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
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33
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Sahnoune H, Mahias V, Halet JF, Lapinte C. 1,4-Dimethoxybutadienediyl-Bridged Diiron Compounds in Three Oxidation States: Evaluation of Delocalization Effects. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00174] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiba Sahnoune
- Département de Chimie, Faculté des Sciences, Université M’Hamed Bougara, 35000 Boumerdès, Algeria
- Laboratoire de Physique et Chimie Quantique, Faculté des Sciences, Université Mouloud Mammeri de Tizi-Ouzou, 15000 Tizi-Ouzou, Algeria
- Univ Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | | | | | - Claude Lapinte
- Univ Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
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34
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Srinivasan B, Gellé A, Gucci F, Boussard-Pledel C, Fontaine B, Gautier R, Halet JF, Reece MJ, Bureau B. Realizing a stable high thermoelectric zT ∼ 2 over a broad temperature range in Ge1−x−yGaxSbyTe via band engineering and hybrid flash-SPS processing. Inorg Chem Front 2019. [DOI: 10.1039/c8qi00703a] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a remarkably high and stable thermoelectric zT ∼ 2 by manipulating the electronic bands in hybrid flash-SPSed Ga–Sb codoped GeTe.
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Affiliation(s)
- Bhuvanesh Srinivasan
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR – UMR 6226
- F-35000 Rennes
| | - Alain Gellé
- Univ. Rennes
- CNRS
- IPR – UMR 6251
- F-35000 Rennes
- France
| | - Francesco Gucci
- School of Engineering and Materials Science
- Queen Mary University of London
- London E1 4NS
- UK
| | | | - Bruno Fontaine
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR – UMR 6226
- F-35000 Rennes
| | - Régis Gautier
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR – UMR 6226
- F-35000 Rennes
| | - Jean-François Halet
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR – UMR 6226
- F-35000 Rennes
| | - Michael J. Reece
- School of Engineering and Materials Science
- Queen Mary University of London
- London E1 4NS
- UK
| | - Bruno Bureau
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR – UMR 6226
- F-35000 Rennes
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Zafar M, Rongala R, Pradhan AN, Pathak K, Roisnel T, Halet JF, Ghosh S. Mercapto-benzothiazolyl based ruthenium(ii) borate complexes: synthesis and reactivity towards various phosphines. Dalton Trans 2019; 48:7413-7424. [DOI: 10.1039/c9dt00498j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ruthenium complexes featuring phosphinate and dual Ru⋯H–B interactions between Ru and B–H bonds of borate ligands supported by mercapto-benzothiazolyl heterocycles have been synthesized.
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Affiliation(s)
- Mohammad Zafar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Ramalakshmi Rongala
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Alaka Nanda Pradhan
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Kriti Pathak
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Thierry Roisnel
- Univ Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes
- UMR 6226
- F-35042 Rennes
| | - Jean-François Halet
- Univ Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes
- UMR 6226
- F-35042 Rennes
| | - Sundargopal Ghosh
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
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36
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Lemoine P, Halet JF, Cordier S. Inorganic Niobium and Tantalum Octahedral Cluster Halide Compounds with Three-Dimensional Frameworks: A Review on Their Crystallographic and Electronic Structures. Structure and Bonding 2019. [DOI: 10.1007/430_2019_39] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Zafar M, Ramalakshmi R, Pradhan AN, Pathak K, Roisnel T, Halet JF, Ghosh S. Correction: Mercapto-benzothiazolyl based ruthenium( ii) borate complexes: synthesis and reactivity towards various phosphines. Dalton Trans 2019; 48:7953. [DOI: 10.1039/c9dt90115a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Mercapto-benzothiazolyl based ruthenium(ii) borate complexes: synthesis and reactivity towards various phosphines’ by Mohammad Zafar, et al., Dalton Trans., 2019, DOI: 10.1039/c9dt00498j.
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Affiliation(s)
- Mohammad Zafar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Rongala Ramalakshmi
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Alaka Nanda Pradhan
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Kriti Pathak
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Thierry Roisnel
- Univ Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes
- UMR 6226
- F-35042 Rennes
| | - Jean-François Halet
- Univ Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes
- UMR 6226
- F-35042 Rennes
| | - Sundargopal Ghosh
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
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38
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Makhoul R, Gluyas JBG, Vincent KB, Sahnoune H, Halet JF, Low PJ, Hamon JR, Lapinte C. Redox Properties of Ferrocenyl Ene-diynyl-Bridged Cp*(dppe)M–C≡C–1,4-(C6H4) Complexes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00740] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rim Makhoul
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Josef B. G. Gluyas
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
| | - Kevin B. Vincent
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Hiba Sahnoune
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
- Département de Chimie, Faculté des Sciences, Université M’Hamed Bougara, Boumerdès, Algeria
| | - Jean-François Halet
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Paul J. Low
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
| | - Jean-René Hamon
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Claude Lapinte
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
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Srinivasan B, Fontaine B, Gucci F, Dorcet V, Saunders TG, Yu M, Cheviré F, Boussard-Pledel C, Halet JF, Gautier R, Reece MJ, Bureau B. Effect of the Processing Route on the Thermoelectric Performance of Nanostructured CuPb 18SbTe 20. Inorg Chem 2018; 57:12976-12986. [PMID: 30285420 DOI: 10.1021/acs.inorgchem.8b02248] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The quaternary AgPb18SbTe20 compound (abbreviated as LAST) is a prominent thermoelectric material with good performance. Endotaxially embedded nanoscale Ag-rich precipitates contribute significantly to decreased lattice thermal conductivity (κlatt) in LAST alloys. In this work, Ag in LAST alloys was completely replaced by the more economically available Cu. Herein, we conscientiously investigated the different routes of synthesizing CuPb18SbTe20 after vacuum-sealed-tube melt processing, including (i) slow cooling of the melt, (ii) quenching and annealing, and consolidation by (iii) spark plasma sintering (SPS) and also (iv) by the state-of-the-art flash SPS. Irrespective of the method of synthesis, the electrical (σ) and thermal (κtot) conductivities of the CuPb18SbTe20 samples were akin to those of LAST alloys. Both the flash-SPSed and slow-cooled CuPb18SbTe20 samples with nanoscale dislocations and Cu-rich nanoprecipitates exhibited an ultralow κlatt ∼ 0.58 W/m·K at 723 K, comparable with that of its Ag counterpart, regardless of the differences in the size of the precipitates, type of precipitate-matrix interfaces, and other nanoscopic architectures. The sample processed by flash SPS manifested higher figure of merit ( zT ∼ 0.9 at 723 K) because of better optimization and a trade-off between the transport properties by decreasing the carrier concentration and κlatt without degrading the carrier mobility. In spite of their comparable σ and κtot, zT of the Cu samples is low compared to that of the Ag samples because of their contrasting thermopower values. First-principles calculations attribute this variation in the Seebeck coefficient to dwindling of the energy gap (from 0.1 to 0.02 eV) between the valence and conduction bands in MPb18SbTe20 (M = Cu or Ag) when Cu replaces Ag.
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Affiliation(s)
- Bhuvanesh Srinivasan
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR, UMR 6226 , Rennes F-35000 , France.,Nanoforce Technology Ltd., School of Engineering and Materials Science , Queen Mary University of London , London E1 4NS , United Kingdom
| | - Bruno Fontaine
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR, UMR 6226 , Rennes F-35000 , France
| | - Francesco Gucci
- Nanoforce Technology Ltd., School of Engineering and Materials Science , Queen Mary University of London , London E1 4NS , United Kingdom
| | - Vincent Dorcet
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR, UMR 6226 , Rennes F-35000 , France
| | - Theo Graves Saunders
- Nanoforce Technology Ltd., School of Engineering and Materials Science , Queen Mary University of London , London E1 4NS , United Kingdom
| | - Min Yu
- Nanoforce Technology Ltd., School of Engineering and Materials Science , Queen Mary University of London , London E1 4NS , United Kingdom
| | - François Cheviré
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR, UMR 6226 , Rennes F-35000 , France
| | - Catherine Boussard-Pledel
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR, UMR 6226 , Rennes F-35000 , France
| | - Jean-François Halet
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR, UMR 6226 , Rennes F-35000 , France
| | - Régis Gautier
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR, UMR 6226 , Rennes F-35000 , France
| | - Michael J Reece
- Nanoforce Technology Ltd., School of Engineering and Materials Science , Queen Mary University of London , London E1 4NS , United Kingdom
| | - Bruno Bureau
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR, UMR 6226 , Rennes F-35000 , France
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Merhi A, Grelaud G, Morshedi M, Abid S, Green KA, Barlow A, Groizard T, Kahlal S, Halet JF, Ngo HM, Ledoux I, Cifuentes MP, Humphrey MG, Paul F, Paul-Roth CO. Synthesis, characterization and third-order nonlinear optical properties of a dodecaruthenium organometallic dendrimer with a zinc(ii) tetraphenylporphyrin core. Dalton Trans 2018; 47:11123-11135. [PMID: 30043792 DOI: 10.1039/c8dt02301h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new Zn(ii) porphyrin-based dendrimer (52) containing twelve Ru(ii) alkynyl fragments, has been prepared following a convergent approach in two steps from 5,10,15,20-tetra(4-ethynylphenyl)porphyrinatozinc(ii) (6). The cubic nonlinear optical (NLO) properties of 52 and other derivatives of 6 have been measured by third-harmonic generation (THG) at 1907 nm and by Z-scan over the spectral range 500-1700 nm, revealing the remarkable NLO response of 52 in the near-IR range. These results highlight the beneficial role of the extended "cross fourchée"-like polymetallic structure of 52 on its third-order NLO properties.
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Affiliation(s)
- Areej Merhi
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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41
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Gückel S, Gluyas JBG, El-Tarhuni S, Sobolev AN, Whiteley MW, Halet JF, Lapinte C, Kaupp M, Low PJ. Iron versus Ruthenium: Clarifying the Electronic Differences between Prototypical Mixed-Valence Organometallic Butadiyndiyl Bridged Molecular Wires. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00099] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Simon Gückel
- Institut für Chemie, Technische Universität Berlin, Sekr. C7, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | | | - Sarah El-Tarhuni
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | | | - Mark W. Whiteley
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | | | - Claude Lapinte
- Université Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Martin Kaupp
- Institut für Chemie, Technische Universität Berlin, Sekr. C7, Strasse des 17. Juni 135, 10623 Berlin, Germany
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42
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Saha K, Ramalakshmi R, Borthakur R, Gomosta S, Pathak K, Dorcet V, Roisnel T, Halet JF, Ghosh S. An Efficient Method for the Synthesis of Boratrane Complexes of Late Transition Metals. Chemistry 2017; 23:18264-18275. [PMID: 28949073 DOI: 10.1002/chem.201704332] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Indexed: 11/08/2022]
Abstract
In a quest for efficient precursors for the synthesis of boratrane complexes of late transition metals, we have developed a useful synthetic method using [L'M(μ-Cl)Clx ]2 as precursors (L'=η6 -p-cymene, M=Ru, x=1; L'=COD, M=Rh, x=0 and L'=Cp*, M=Ir or Rh, x=1; COD=1,5-cyclooctadiene, Cp*=η5 -C5 Me5 ). For example, treatment of Na[(H3 B)bbza] or Na[(H2 B)mp2 ] (bbza=bis(benzothiazol-2-yl)amine; mp=2-mercaptopyridyl) with [L'M(μ-Cl)Clx ]2 yielded [(η6 -p-cymene)RuBH{(NCSC6 H4 )(NR)}2 ] (2; R=NCSC6 H4 ), [{N(NCSC6 H4 )2 }RhBH{(NCSC6 H4 )(NR)}2 ] (3; R=NCS-C6 H4 ), [(η6 -p-cymene)RuBH(L)2 ] (5; L=C5 H4 NS), and [Cp*MBH(L)2 ] (6 and 7; L=C5 H4 NS, M=Ir or Rh). In order to delineate the significance of the ligands, we studied the reactivity of [(COD)Rh(μ-Cl)]2 with Na[(H3 B)bbza], which led to the formation of the isomeric agostic complexes [(η4 -COD)Rh(μ-H)BHRh(C14 H8 N3 S2 )3 ], 4 a and 4 b, in parallel to the formation of 16-electron square-pyramidal rhodaboratrane complex 3. Compounds 4 a and 4 b show two different geometries, in which the Rh-B bonds are shorter than in the reported Rh agostic complexes. The new compounds have been characterized in solution by various spectroscopic analyses, and their structural arrangements have been unequivocally established by crystallographic analyses. DFT calculations provide useful insights regarding the stability of these metallaboratrane complexes as well as their M→B bonding interactions.
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Affiliation(s)
- Koushik Saha
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Rongala Ramalakshmi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Rosmita Borthakur
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Suman Gomosta
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Kriti Pathak
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Ecole Nationale Supérieure de Chimie de Rennes, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Ecole Nationale Supérieure de Chimie de Rennes, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Ecole Nationale Supérieure de Chimie de Rennes, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Sundargopal Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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Ramalakshmi R, Roisnel T, Dorcet V, Halet JF, Ghosh S. Synthesis and structural characterization of trithiocarbonate complexes of molybdenum and ruthenium derived from CS2 ligand. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.03.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Saha K, Ramalakshmi R, Gomosta S, Pathak K, Dorcet V, Roisnel T, Halet JF, Ghosh S. Back Cover: Design, Synthesis, and Chemistry of Bis(σ)borate and Agostic Complexes of Group 7 Metals (Chem. Eur. J. 41/2017). Chemistry 2017. [DOI: 10.1002/chem.201702439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Koushik Saha
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Rongala Ramalakshmi
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Suman Gomosta
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Kriti Pathak
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS; Ecole Nationale Supérieure de Chimie de Rennes-Université de Rennes 1; 35042 Rennes Cedex France
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS; Ecole Nationale Supérieure de Chimie de Rennes-Université de Rennes 1; 35042 Rennes Cedex France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS; Ecole Nationale Supérieure de Chimie de Rennes-Université de Rennes 1; 35042 Rennes Cedex France
| | - Sundargopal Ghosh
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
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Saha K, Ramalakshmi R, Gomosta S, Pathak K, Dorcet V, Roisnel T, Halet JF, Ghosh S. Design, Synthesis, and Chemistry of Bis(σ)borate and Agostic Complexes of Group 7 Metals. Chemistry 2017; 23:9812-9820. [PMID: 28444699 DOI: 10.1002/chem.201701423] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Indexed: 11/06/2022]
Abstract
A series of new bis(σ)borate and agostic complexes of group 7 metals have been synthesized and structurally characterized from various borate ligands, such as trihydrobis(benzothiazol-2-yl)amideborate (Na[(H3 B)bbza]), trihydro(2-aminobenzothiazolyl)borate (Na[(H3 B)abz]), and dihydrobis(2-mercaptopyridyl)borate (Na[(H2 B)mp2 ]) (bbza=bis(benzothiazol-2-yl)amine, abz=2-aminobenzothiazolyl, and mp=2-mercaptopyridyl). Photolysis of [Mn2 (CO)10 ] with Na[(H3 B)bbza] formed bis(σ)borate complex [Mn(CO)3 (μ-H)2 BHNCSC6 H4 (NR)] (1; R=NCSC6 H4 ). Octahedral complex [Re(CO)2 (N3 C2 S2 C12 H8 )2 ] (2) was generated under similar reaction conditions with [Re2 (CO)10 ]. Similarly, when [Mn2 (CO)10 ] was treated with Na[(H3 B)abz], bis(σ)borate complex [Mn(CO)3 (μ-H)2 BH(HN2 CSC6 H4 )] (3) and the agostic complex [Mn(CO)3 (μ-H)BH(HN2 CSC6 H4 )2 ] (4) were formed. To probe the potential formation of agostic complexes of the heavier group 7 metals, we carried out the photolysis of [M2 (CO)10 ] with Na[(H2 B)mp2 ] and found that [M(CO)3 (μ-H)BH(C5 H4 NS)2 ] (5: M=Re; 6: M=Mn) was formed in moderate yield. Complexes 1 and 3 feature a (κ3 -H,H,N) coordination mode, whereas 4, 5, and 6 display both (κ3 -H,N,N) and (κ3 -H,S,S) modes of the corresponding ligands. To investigate the lability of the CO ligands of 1 and 3, we treated the complexes with phosphine ligands that generated novel bis(σ)borate complexes [Mn(μ-H)2 (BHNCSC6 H4 )(NR)(CO)2 PL2 L'] (R=NCSC6 H4 ; 7 a: L=L'=Ph; 7 b: L=Ph, L'=Me) and [Mn(μ-H)2 BHN(NCSC6 H4 )R(CO)2 PL2 L'] (R=NCSC6 H4 ; 8 a: L=L'=Ph; 8 b: L=Ph, L'=Me). Complexes 7 and 8 are structural isomers with different coordination modes of the bbza ligand. In addition, DFT calculations were performed to shed some light on the bonding and electronic structures of these complexes.
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Affiliation(s)
- Koushik Saha
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Rongala Ramalakshmi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Suman Gomosta
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Kriti Pathak
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Ecole Nationale Supérieure de Chimie de Rennes-Université de Rennes 1, 35042, Rennes Cedex, France
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Ecole Nationale Supérieure de Chimie de Rennes-Université de Rennes 1, 35042, Rennes Cedex, France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Ecole Nationale Supérieure de Chimie de Rennes-Université de Rennes 1, 35042, Rennes Cedex, France
| | - Sundargopal Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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Boucher B, Al Rahal Al Orabi R, Fontaine B, Grin Y, Gautier R, Halet JF. Enhancement of the Thermoelectric Properties of FeGa 3-type Structures with Group 6 Transition Metals: A Computational Exploration. Inorg Chem 2017; 56:4229-4237. [PMID: 28319369 DOI: 10.1021/acs.inorgchem.7b00251] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The possible existence of group 6 TM3 compounds with T = Cr, Mo, W and M = Ga, In is investigated with the aid of density functional theory calculations. Their most probable crystal structure is expected to be of the FeGa3 type tetragonal space group P42/mnm. All compounds are computed to be semiconductors with a band gap ranging from 0.08 to 0.43 eV, at the modified Becke-Johnson level of theory. The thermoelectric properties are analyzed via calculations based on Boltzmann transport equation under a constant relaxation time approximation. Promising power factors are computed for both n- and p-type WGa3 because of a band degeneracy around the Fermi level similar to that of heavily doped PbTe and SnTe materials. If the optimal chemical potential can be reached, a thermoelectric figure of merit up to 0.6 at 800 K for both n- and p-type may be expected for WGa3.
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Affiliation(s)
- Benoît Boucher
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1-Ecole Nationale Supérieure de Chimie de Rennes , 11 allée de Beaulieu, 35708 Rennes, France.,Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Rabih Al Rahal Al Orabi
- Department of Physics and Science of Advanced Materials Program, Central Michigan University , Mt. Pleasant, Michigan 48859, United States
| | - Bruno Fontaine
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1-Ecole Nationale Supérieure de Chimie de Rennes , 11 allée de Beaulieu, 35708 Rennes, France
| | - Yuri Grin
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Régis Gautier
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1-Ecole Nationale Supérieure de Chimie de Rennes , 11 allée de Beaulieu, 35708 Rennes, France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1-Ecole Nationale Supérieure de Chimie de Rennes , 11 allée de Beaulieu, 35708 Rennes, France
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47
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Bruce MI, Ellis BG, Halet JF, Le Guennic B, Nicholson BK, Sahnoune H, Scoleri N, Skelton BW, Sobolev AN, Sumby CJ, White AH, Zaitseva NN. Syntheses and structures of some complexes containing M3(μ-dppm)3 moieties (M = Cu, Ag) linking C4{M′Lx} groups [M′Lx= Re(CO)3(Bu2-bpy), Ru(dppe)Cp∗]. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.09.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rao CE, Barik SK, Yuvaraj K, Bakthavachalam K, Roisnel T, Dorcet V, Halet JF, Ghosh S. Reactivity of CS2- Syntheses and Structures of Transition-Metal Species with Dithioformate and Methanedithiolate Ligands. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600823] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chokkapu Eswara Rao
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - Subrat Kumar Barik
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - K. Yuvaraj
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - K. Bakthavachalam
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes; UMR 6226; CNRS-Université de Rennes1; 35042 Rennes Cedex France
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes; UMR 6226; CNRS-Université de Rennes1; 35042 Rennes Cedex France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes; UMR 6226; CNRS-Université de Rennes1; 35042 Rennes Cedex France
| | - Sundargopal Ghosh
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
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Sieck C, Tay MG, Thibault MH, Edkins RM, Costuas K, Halet JF, Batsanov AS, Haehnel M, Edkins K, Lorbach A, Steffen A, Marder TB. Reductive Coupling of Diynes at Rhodium Gives Fluorescent Rhodacyclopentadienes or Phosphorescent Rhodium 2,2'-Biphenyl Complexes. Chemistry 2016; 22:10523-32. [PMID: 27355689 DOI: 10.1002/chem.201601912] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Indexed: 01/08/2023]
Abstract
Reactions of [Rh(κ(2) -O,O-acac)(PMe3 )2 ] (acac=acetylacetonato) and α,ω-bis(arylbutadiynyl)alkanes afford two isomeric types of MC4 metallacycles with very different photophysical properties. As a result of a [2+2] reductive coupling at Rh, 2,5-bis(arylethynyl)rhodacyclopentadienes (A) are formed, which display intense fluorescence (Φ=0.07-0.54, τ=0.2-2.5 ns) despite the presence of the heavy metal atom. Rhodium biphenyl complexes (B), which show exceptionally long-lived (hundreds of μs) phosphorescence (Φ=0.01-0.33) at room temperature in solution, have been isolated as a second isomer originating from an unusual [4+2] cycloaddition reaction and a subsequent β-H-shift. We attribute the different photophysical properties of isomers A and B to a higher excited state density and a less stabilized T1 state in the biphenyl complexes B, allowing for more efficient intersystem crossing S1 →Tn and T1 →S0 . Control of the isomer distribution is achieved by modification of the bis- (diyne) linker length, providing a fundamentally new route to access photoactive metal biphenyl compounds.
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Affiliation(s)
- Carolin Sieck
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Meng Guan Tay
- Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK.,Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300, Kota Samarahan, Malaysia
| | | | - Robert M Edkins
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Karine Costuas
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Andrei S Batsanov
- Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK
| | - Martin Haehnel
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Katharina Edkins
- School of Medicine, Pharmacy and Health, Durham University, University Boulevard, Stockton-on-Tees, TS17 6BH, UK
| | - Andreas Lorbach
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Andreas Steffen
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK
| | - Todd B Marder
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany. .,Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK.
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50
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Roué S, Sahnoune H, Toupet L, Halet JF, Lapinte C. Double Insertion of Thiophene Rings in Polyynediyl Chains to Stabilize Nanoscaled Molecular Wires with [Cp*(dppe)Fe] Termini. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00209] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Séverine Roué
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes, France
| | - Hiba Sahnoune
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes, France
- Département
de Chimie, Faculté des Sciences, Université M’Hamed Bougara, Boumerdès, Algeria
| | - Loïc Toupet
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes, France
| | - Jean-François Halet
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes, France
| | - Claude Lapinte
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes, France
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