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Ubasart E, Mustieles Marin I, Asensio JM, Mencia G, López-Vinasco ÁM, García-Simón C, Del Rosal I, Poteau R, Chaudret B, Ribas X. Supramolecular nanocapsules as two-fold stabilizers of outer-cavity sub-nanometric Ru NPs and inner-cavity ultra-small Ru clusters. NANOSCALE HORIZONS 2022; 7:607-615. [PMID: 35389405 DOI: 10.1039/d1nh00677k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The synthesis of metallic nanoparticles (MNP) with high surface area and controlled shape is of paramount importance to increase their catalytic performance. The detailed growing process of NP is mostly unknown and understanding the specific steps would pave the way for a rational synthesis of the desired MNP. Here we take advantage of the stabilization properties exerted by the tetragonal prismatic supramolecular nanocapsule 8·(BArF)8 to develop a synthetic methodology for sub-nanometric RuNP (0.6-0.7 nm). The catalytic properties of these sub-nanometric nanoparticles were tested on the hydrogenation of styrene, obtaining excellent selectivity for the hydrogenation of the alkene moiety. In addition, the encapsulation of [Ru5] clusters inside the nanocapsule is strikingly observed in most of the experimental conditions, as ascertained by HR-MS. Moreover, a thorough DFT study enlightens the nature of the [Ru5] clusters as tb-Ru5H2(η6-PhH)2(η6-pyz)3 (2) trapped by two arene moieties of the clip, or as tb-Ru5H2(η1-pyz)6(η6-pyz)3 (3) trapped between the two Zn-porphyrin units of the nanocapsule. Both options fulfill the Wade-Mingos counting rules, i.e. 72 CVEs for the closotb. The trapped [Ru5] metallic clusters are proposed to be the first-grown seeds of subsequent formation of the subnanometric RuNP. Moreover, the double role of the nanocapsule in stabilising ∼0.7 nm NPs and also in hosting ultra-small Ru clusters, is unprecedented and may pave the way towards the synthesis of ultra-small metallic clusters for catalytic purposes.
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Affiliation(s)
- Ernest Ubasart
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Campus Montilivi, E-17003 Girona, Catalonia, Spain.
| | - Irene Mustieles Marin
- Laboratoire de Physique et Chimie des Nano-objets (LPCNO), INSA-CNRS, Université de Toulouse, 135 Ave. de Rangueil, 31077 Toulouse, France
| | - Juan Manuel Asensio
- Laboratoire de Physique et Chimie des Nano-objets (LPCNO), INSA-CNRS, Université de Toulouse, 135 Ave. de Rangueil, 31077 Toulouse, France
| | - Gabriel Mencia
- Laboratoire de Physique et Chimie des Nano-objets (LPCNO), INSA-CNRS, Université de Toulouse, 135 Ave. de Rangueil, 31077 Toulouse, France
| | - Ángela M López-Vinasco
- Laboratoire de Physique et Chimie des Nano-objets (LPCNO), INSA-CNRS, Université de Toulouse, 135 Ave. de Rangueil, 31077 Toulouse, France
| | - Cristina García-Simón
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Campus Montilivi, E-17003 Girona, Catalonia, Spain.
| | - Iker Del Rosal
- Laboratoire de Physique et Chimie des Nano-objets (LPCNO), INSA-CNRS, Université de Toulouse, 135 Ave. de Rangueil, 31077 Toulouse, France
| | - Romuald Poteau
- Laboratoire de Physique et Chimie des Nano-objets (LPCNO), INSA-CNRS, Université de Toulouse, 135 Ave. de Rangueil, 31077 Toulouse, France
| | - Bruno Chaudret
- Laboratoire de Physique et Chimie des Nano-objets (LPCNO), INSA-CNRS, Université de Toulouse, 135 Ave. de Rangueil, 31077 Toulouse, France
| | - Xavi Ribas
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Campus Montilivi, E-17003 Girona, Catalonia, Spain.
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2
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Moraru IT, Martínez-Prieto LM, Coppel Y, Chaudret B, Cusinato L, Del Rosal I, Poteau R. A combined theoretical/experimental study highlighting the formation of carbides on Ru nanoparticles during CO hydrogenation. NANOSCALE 2021; 13:6902-6915. [PMID: 33885491 DOI: 10.1039/d0nr08735a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Formation of stable carbides during CO bond dissociation on small ruthenium nanoparticles (RuNPs) is demonstrated, both by means of DFT calculations and by solid state 13C NMR techniques. Theoretical calculations of chemical shifts in several model clusters are employed in order to secure experimental spectroscopic assignations for surface ruthenium carbides. Mechanistic DFT investigations, carried out on a realistic Ru55 nanoparticle model (∼1 nm) in terms of size, structure and surface composition, reveal that ruthenium carbides are obtained during CO hydrogenation. Calculations also indicate that carbide formation via hydrogen-assisted hydroxymethylidyne (COH) pathways is exothermic and occurs at reasonable kinetic cost on standard sites of the RuNPs, such as 4-fold ones on flat terraces, and not only in steps as previously suggested. Another novel outcome of the DFT mechanistic study consists of the possible formation of μ6 ruthenium carbides in the tip-B5 site, similar examples being known only for molecular ruthenium clusters. Moreover, based on DFT energies, the possible rearrangement of the surface metal atoms around the same tip-site results in a μ-Ru atom coordinated to the remaining RuNP moiety, reminiscent of a pseudo-octahedral metal center on the NP surface.
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Affiliation(s)
- Ionut-Tudor Moraru
- Université de Toulouse; INSA, UPS, CNRS; LPCNO (IRSAMC), 135 avenue de Rangueil, F-31077 Toulouse, France.
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3
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González-Gómez R, Cusinato L, Bijani C, Coppel Y, Lecante P, Amiens C, Del Rosal I, Philippot K, Poteau R. Carboxylic acid-capped ruthenium nanoparticles: experimental and theoretical case study with ethanoic acid. NANOSCALE 2019; 11:9392-9409. [PMID: 31038521 DOI: 10.1039/c9nr00391f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Given that the properties of metal nanoparticles (NPs) depend on several parameters (namely, morphology, size, surface composition, crystalline structure, etc.), a computational model that brings a better understanding of a structure-property relationship at the nanoscale is a significant plus in order to explain the surface properties of metal NPs and also their catalytic viability, in particular, when envisaging a new stabilizing agent. In this study we combined experimental and theoretical tools to obtain a mapping of the surface of ruthenium NPs stabilized by ethanoic acid as a new capping ligand. For this purpose, the organometallic approach was applied as the synthesis method. The morphology and crystalline structure of the obtained particles was characterized by state-of-the art techniques (TEM, HRTEM, WAXS) and their surface composition was determined by various techniques (solution and solid-state NMR, IR, chemical titration, DFT calculations). DFT calculations of the vibrational features of model NPs and of the chemical shifts of model clusters allowed us to secure the spectroscopic experimental assignations. Spectroscopic data as well as DFT mechanistic studies showed that ethanoic acid lies on the metal surface as ethanoate, together with hydrogen atoms. The optimal surface composition determined by DFT calculations appeared to be ca. [0.4-0.6] H/Rusurf and 0.4 ethanoate/RuSurf, which was corroborated by experimental results. Moreover, for such a composition, a hydrogen adsorption Gibbs free energy in the range -2.0 to -3.0 kcal mol-1 was calculated, which makes these ruthenium NPs a promising nanocatalyst for the hydrogen evolution reaction in the electrolysis of water.
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Affiliation(s)
- Roberto González-Gómez
- LPCNO (IRSAMC), Université de Toulouse, INSA, UPS, CNRS (UMR 5215), Institut National des Sciences -Appliquées, 135 avenue de Rangueil, F-31077 Toulouse, France.
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4
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Häller LJL, Mas-Marzá E, Cybulski MK, Sanguramath RA, Macgregor SA, Mahon MF, Raynaud C, Russell CA, Whittlesey MK. Computation provides chemical insight into the diverse hydride NMR chemical shifts of [Ru(NHC) 4(L)H] 0/+ species (NHC = N-heterocyclic carbene; L = vacant, H 2, N 2, CO, MeCN, O 2, P 4, SO 2, H -, F - and Cl -) and their [Ru(R 2PCH 2CH 2PR 2) 2(L)H] + congeners. Dalton Trans 2018; 46:2861-2873. [PMID: 28245022 DOI: 10.1039/c7dt00117g] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Relativistic density functional theory calculations, both with and without the effects of spin-orbit coupling, have been employed to model hydride NMR chemical shifts for a series of [Ru(NHC)4(L)H]0/+ species (NHC = N-heterocyclic carbene; L = vacant, H2, N2, CO, MeCN, O2, P4, SO2, H-, F- and Cl-), as well as selected phosphine analogues [Ru(R2PCH2CH2PR2)2(L)H]+ (R = iPr, Cy; L = vacant, O2). Inclusion of spin-orbit coupling provides good agreement with the experimental data. For the NHC systems large variations in hydride chemical shift are shown to arise from the paramagnetic term, with high net shielding (L = vacant, Cl-, F-) being reinforced by the contribution from spin-orbit coupling. Natural chemical shift analysis highlights the major orbital contributions to the paramagnetic term and rationalizes trends via changes in the energies of the occupied Ru dπ orbitals and the unoccupied σ*Ru-H orbital. In [Ru(NHC)4(η2-O2)H]+ a δ-interaction with the O2 ligand results in a low-lying LUMO of dπ character. As a result this orbital can no longer contribute to the paramagnetic shielding, but instead provides additional deshielding via overlap with the remaining (occupied) dπ orbital under the Lz angular momentum operator. These two effects account for the unusual hydride chemical shift of +4.8 ppm observed experimentally for this species. Calculations reproduce hydride chemical shift data observed for [Ru(iPr2PCH2CH2PiPr2)2(η2-O2)H]+ (δ = -6.2 ppm) and [Ru(R2PCH2CH2PR2)2H]+ (ca. -32 ppm, R = iPr, Cy). For the latter, the presence of a weak agostic interaction trans to the hydride ligand is significant, as in its absence (R = Me) calculations predict a chemical shift of -41 ppm, similar to the [Ru(NHC)4H]+ analogues. Depending on the strength of the agostic interaction a variation of up to 18 ppm in hydride chemical shift is possible and this factor (that is not necessarily readily detected experimentally) can aid in the interpretation of hydride chemical shift data for nominally unsaturated hydride-containing species. The synthesis and crystallographic characterization of the BArF4- salts of [Ru(IMe4)4(L)H]+ (IMe4 = 1,3,4,5-tetramethylimidazol-2-ylidene; L = P4, SO2; ArF = 3,5-(CF3)2C6H3) and [Ru(IMe4)4(Cl)H] are also reported.
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Affiliation(s)
- L Jonas L Häller
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
| | - Elena Mas-Marzá
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Mateusz K Cybulski
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | | | - Stuart A Macgregor
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
| | - Mary F Mahon
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Christophe Raynaud
- Institut Charles Gerhardt, CNRS 5253, Université de Montpellier, Bâtiment 15, CC 1501, Place Eugène Bataillon, 34 095 Montpellier Cedex 5, France.
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5
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Martínez-Prieto LM, Cano I, Márquez A, Baquero EA, Tricard S, Cusinato L, Del Rosal I, Poteau R, Coppel Y, Philippot K, Chaudret B, Cámpora J, van Leeuwen PWNM. Zwitterionic amidinates as effective ligands for platinum nanoparticle hydrogenation catalysts. Chem Sci 2017; 8:2931-2941. [PMID: 28451359 PMCID: PMC5376718 DOI: 10.1039/c6sc05551f] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 01/31/2017] [Indexed: 11/21/2022] Open
Abstract
Pt NPs covered with zwitterionic amidinates as ligands exhibit an exciting ligand effect in the hydrogenation of carbonyl groups when electron donor/acceptor groups are introduced in the N-substituents.
Ligand control of metal nanoparticles (MNPs) is rapidly gaining importance as ligands can stabilize the MNPs and regulate their catalytic properties. Herein we report the first example of Pt NPs ligated by imidazolium-amidinate ligands that bind strongly through the amidinate anion to the platinum surface atoms. The binding was established by 15N NMR spectroscopy, a precedent for nitrogen ligands on MNPs, and XPS. Both monodentate and bidentate coordination modes were found. DFT showed a high bonding energy of up to –48 kcal mol–1 for bidentate bonding to two adjacent metal atoms, which decreased to –28 ± 4 kcal mol–1 for monodentate bonding in the absence of impediments by other ligands. While the surface is densely covered with ligands, both IR and 13C MAS NMR spectra proved the adsorption of CO on the surface and thus the availability of sites for catalysis. A particle size dependent Knight shift was observed in the 13C MAS NMR spectra for the atoms that coordinate to the surface, but for small particles, ∼1.2 nm, it almost vanished, as theory for MNPs predicts; this had not been experimentally verified before. The Pt NPs were found to be catalysts for the hydrogenation of ketones and a notable ligand effect was observed in the hydrogenation of electron-poor carbonyl groups. The catalytic activity is influenced by remote electron donor/acceptor groups introduced in the aryl-N-substituents of the amidinates; p-anisyl groups on the ligand gave catalysts several times faster the ligand containing p-chlorophenyl groups.
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Affiliation(s)
- L M Martínez-Prieto
- LPCNO , Laboratoire de Physique et Chimie des Nano-Objets , UMR5215 INSA-CNRS-UPS , Institut des Sciences Appliquées , 135, Avenue de Rangueil , F-31077 Toulouse , France . ;
| | - I Cano
- LPCNO , Laboratoire de Physique et Chimie des Nano-Objets , UMR5215 INSA-CNRS-UPS , Institut des Sciences Appliquées , 135, Avenue de Rangueil , F-31077 Toulouse , France . ;
| | - A Márquez
- Instituto de Investigaciones Químicas , CSIC-Universidad de Sevilla , C/Américo Vespucio, 49 , 41092 Sevilla , Spain .
| | - E A Baquero
- LPCNO , Laboratoire de Physique et Chimie des Nano-Objets , UMR5215 INSA-CNRS-UPS , Institut des Sciences Appliquées , 135, Avenue de Rangueil , F-31077 Toulouse , France . ;
| | - S Tricard
- LPCNO , Laboratoire de Physique et Chimie des Nano-Objets , UMR5215 INSA-CNRS-UPS , Institut des Sciences Appliquées , 135, Avenue de Rangueil , F-31077 Toulouse , France . ;
| | - L Cusinato
- LPCNO , Laboratoire de Physique et Chimie des Nano-Objets , UMR5215 INSA-CNRS-UPS , Institut des Sciences Appliquées , 135, Avenue de Rangueil , F-31077 Toulouse , France . ;
| | - I Del Rosal
- LPCNO , Laboratoire de Physique et Chimie des Nano-Objets , UMR5215 INSA-CNRS-UPS , Institut des Sciences Appliquées , 135, Avenue de Rangueil , F-31077 Toulouse , France . ;
| | - R Poteau
- LPCNO , Laboratoire de Physique et Chimie des Nano-Objets , UMR5215 INSA-CNRS-UPS , Institut des Sciences Appliquées , 135, Avenue de Rangueil , F-31077 Toulouse , France . ;
| | - Y Coppel
- CNRS , LCC (Laboratoire de Chimie de Coordination) , Université de Toulouse , UPS , INPT , 205 route de Narbonne, BP 44099 , F-31077-Toulouse Cedex 4 , France
| | - K Philippot
- CNRS , LCC (Laboratoire de Chimie de Coordination) , Université de Toulouse , UPS , INPT , 205 route de Narbonne, BP 44099 , F-31077-Toulouse Cedex 4 , France
| | - B Chaudret
- LPCNO , Laboratoire de Physique et Chimie des Nano-Objets , UMR5215 INSA-CNRS-UPS , Institut des Sciences Appliquées , 135, Avenue de Rangueil , F-31077 Toulouse , France . ;
| | - J Cámpora
- Instituto de Investigaciones Químicas , CSIC-Universidad de Sevilla , C/Américo Vespucio, 49 , 41092 Sevilla , Spain .
| | - P W N M van Leeuwen
- LPCNO , Laboratoire de Physique et Chimie des Nano-Objets , UMR5215 INSA-CNRS-UPS , Institut des Sciences Appliquées , 135, Avenue de Rangueil , F-31077 Toulouse , France . ;
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6
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Cusinato L, del Rosal I, Poteau R. Shape, electronic structure and steric effects of organometallic nanocatalysts: relevant tools to improve the synergy between theory and experiment. Dalton Trans 2017; 46:378-395. [DOI: 10.1039/c6dt04207d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An integrated package that uses structural, first principles and thermodynamic approaches is expected to play a significant role in advancing our knowledge of nanocatalysts.
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7
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Cusinato L, Martínez-Prieto LM, Chaudret B, Del Rosal I, Poteau R. Theoretical characterization of the surface composition of ruthenium nanoparticles in equilibrium with syngas. NANOSCALE 2016; 8:10974-10992. [PMID: 27172520 DOI: 10.1039/c6nr01191h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A deeper understanding of the relationship between experimental reaction conditions and the surface composition of nanoparticles is crucial in order to elucidate mechanisms involved in nanocatalysis. In the framework of the Fischer-Tropsch synthesis, a resolution of this complex puzzle requires a detailed understanding of the interaction of CO and H with the surface of the catalyst. In this context, the single- and co-adsorption of CO and H to the surface of a 1 nm ruthenium nanoparticle has been investigated with density functional theory. Using several indexes (d-band center, crystal overlap Hamilton population, density of states), a systematic analysis of the bond properties and of the electronic states has also been done, in order to bring an understanding of structure/property relationships at the nanoscale. The H : CO surface composition of this ruthenium nanoparticle exposed to syngas has been evaluated according to a thermodynamic model fed with DFT energies. Such ab initio thermodynamic calculations give access to the optimal H : CO coverage values under a wide range of experimental conditions, through the construction of free energy phase diagrams. Surprisingly, under the Fischer-Tropsch synthesis experimental conditions, and in agreement with new experiments, only CO species are adsorbed at the surface of the nanoparticle. These findings shed new light on the possible reaction pathways underlying the Fischer-Tropsch synthesis, and specifically the initiation of the reaction. It is finally shown that the joint knowledge of the surface composition and energy descriptors can help to identify possible reaction intermediates.
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Affiliation(s)
- Lucy Cusinato
- Université de Toulouse; INSA, UPS, CNRS; LPCNO (IRSAMC), 135 avenue de Rangueil, F-31077 Toulouse, France.
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8
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Wang L, Kefalidis CE, Roisnel T, Sinbandhit S, Maron L, Carpentier JF, Sarazin Y. Structure vs 119Sn NMR Chemical Shift in Three-Coordinated Tin(II) Complexes: Experimental Data and Predictive DFT Computations. Organometallics 2014. [DOI: 10.1021/om5007566] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lingfang Wang
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS−Université de Rennes 1, Campus de Beaulieu, 35042 Rennes
Cedex, France
| | - Christos E. Kefalidis
- Laboratoire
de Physique et Chimie de Nano-objets, UMR 5215 CNRS−Université de Toulouse, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Thierry Roisnel
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS−Université de Rennes 1, Campus de Beaulieu, 35042 Rennes
Cedex, France
| | - Sourisak Sinbandhit
- Centre
Régional des Mesures Physiques de l’Ouest, Université de Rennes 1, 35042 Rennes Cedex, France
| | - Laurent Maron
- Laboratoire
de Physique et Chimie de Nano-objets, UMR 5215 CNRS−Université de Toulouse, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Jean-François Carpentier
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS−Université de Rennes 1, Campus de Beaulieu, 35042 Rennes
Cedex, France
| | - Yann Sarazin
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS−Université de Rennes 1, Campus de Beaulieu, 35042 Rennes
Cedex, France
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9
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Gutmann T, del Rosal I, Chaudret B, Poteau R, Limbach HH, Buntkowsky G. From Molecular Complexes to Complex Metallic Nanostructures-2H Solid-State NMR Studies of Ruthenium-Containing Hydrogenation Catalysts. Chemphyschem 2013; 14:3026-33. [DOI: 10.1002/cphc.201300200] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Indexed: 11/08/2022]
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10
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Gutmann T, Bonnefille E, Breitzke H, Debouttière PJ, Philippot K, Poteau R, Buntkowsky G, Chaudret B. Investigation of the surface chemistry of phosphine-stabilized ruthenium nanoparticles – an advanced solid-state NMR study. Phys Chem Chem Phys 2013; 15:17383-94. [DOI: 10.1039/c3cp52927d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Schley ND, Halbert S, Raynaud C, Eisenstein O, Crabtree RH. Symmetrical Hydrogen Bonds in Iridium(III) Alkoxides with Relevance to Outer Sphere Hydrogen Transfer. Inorg Chem 2012; 51:12313-23. [DOI: 10.1021/ic301601c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nathan D. Schley
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut
06520-8107, United States
| | - Stéphanie Halbert
- Institut Charles Gerhardt, UMR
5253 CNRS, Université Montpellier 2, cc 1501, Place Eugène Bataillon Montpellier, 34095, France
| | - Christophe Raynaud
- Institut Charles Gerhardt, UMR
5253 CNRS, Université Montpellier 2, cc 1501, Place Eugène Bataillon Montpellier, 34095, France
| | - Odile Eisenstein
- Institut Charles Gerhardt, UMR
5253 CNRS, Université Montpellier 2, cc 1501, Place Eugène Bataillon Montpellier, 34095, France
| | - Robert H. Crabtree
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut
06520-8107, United States
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12
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del Rosal I, Gutmann T, Walaszek B, Gerber IC, Chaudret B, Limbach HH, Buntkowsky G, Poteau R. 2H NMR calculations on polynuclear transition metal complexes: on the influence of local symmetry and other factors. Phys Chem Chem Phys 2011; 13:20199-207. [DOI: 10.1039/c1cp22081k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Geetharani K, Bose SK, Ghosh S. Synthesis and Structure of [Cp*Ru(CO)2(μ-H){RuFe3(CO)9}]: An Unusual Mixed-Metal Tetrahedral Cluster with an Exopolyhedral Metal Fragment. Organometallics 2010. [DOI: 10.1021/om100884y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Geetharani
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Shubhankar Kumar Bose
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Sundargopal Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
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14
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Gutmann T, Walaszek B, Yeping X, Wächtler M, del Rosal I, Grünberg A, Poteau R, Axet R, Lavigne G, Chaudret B, Limbach HH, Buntkowsky G. Hydrido-Ruthenium Cluster Complexes as Models for Reactive Surface Hydrogen Species of Ruthenium Nanoparticles. Solid-State 2H NMR and Quantum Chemical Calculations. J Am Chem Soc 2010; 132:11759-67. [DOI: 10.1021/ja104229a] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Torsten Gutmann
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Bernadeta Walaszek
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Xu Yeping
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Maria Wächtler
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Iker del Rosal
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Anna Grünberg
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Romuald Poteau
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Rosa Axet
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Guy Lavigne
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Bruno Chaudret
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Hans-Heinrich Limbach
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
| | - Gerd Buntkowsky
- Institut für Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany, Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany, Institut für Physikalische Chemie, Friedrich-Schiller Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany, Université de Toulouse, INSA, UPS, CNRS, LPCNO, 135 avenue de Rangueil, F-31077 Toulouse, France, Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, 31077 Toulouse Cedex 04,
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15
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del Rosal I, Gutmann T, Maron L, Jolibois F, Chaudret B, Walaszek B, Limbach HH, Poteau R, Buntkowsky G. DFT 2H quadrupolar coupling constants of ruthenium complexes: a good probe of the coordination of hydrides in conjuction with experiments. Phys Chem Chem Phys 2009; 11:5657-63. [PMID: 19842483 DOI: 10.1039/b822150b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal (TM) hydrides are of great interest in chemistry because of their reactivity and their potential as catalysts for hydrogenation reactions. 2H solid-state NMR can be used in order to get information about the local environment of hydrogen atoms, and more particularly the coordination mode of hydrides in such complexes. In this work we will show that it is possible to establish at the level of density functional theory (DFT) a viable methodological strategy that allows the determination of 2H NMR parameters, namely the quadrupolar coupling constant (C(Q)) respectively the quadrupolar splitting (deltanuQ) and the asymmetry parameter (etaQ). The reliability of the method (B3PW91-DFT) and basis set effects have been first evaluated for simple organic compounds (benzene and fluorene). A good correlation between experimental and theoretical values is systematically obtained if the large basis set cc-pVTZ is used for the computations. 2H NMR properties of five mononuclear ruthenium complexes (namely Cp*RuD3(PPh3), Tp*RuD(THT)2, Tp*RuD(D2)(THT) and Tp*RuD(D2)2 and RuD2(D2)2(PCy3)2) which exhibit different ligands and hydrides involved in different coordination modes (terminal-H or eta2-H2), have been calculated and compared to previous experimental data. The results obtained are in excellent agreement with experiments. Although 2H NMR spectra are not always easy to analyze, assistance by quantum chemistry calculations allows unambiguous assignment of the signals of such spectra. As far as experiments can be achieved at very low temperatures in order to avoid dynamic effects, this hybrid theoretical/experimental tool may give useful insights in the context of the characterization of ruthenium surfaces or nanoparticles with solid-state NMR.
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Affiliation(s)
- Iker del Rosal
- Université de Toulouse; INSA, UPS; LPCNO, IRSAMC; 135 avenue de Rangueil, F-31077 Toulouse, France
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16
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Truï¬andier LA, Del Rosal I, Chaudret B, Poteau R, Gerber IC. Where does Hydrogen Adsorb on Ru Nanoparticles? A Powerful Joint2H MAS-NMR/DFT Approach. Chemphyschem 2009; 10:2939-42. [DOI: 10.1002/cphc.200900597] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Raynaud C, del Rosal I, Jolibois F, Maron L, Poteau R. Multicentered effective group potentials: ligand-field effects in organometallic clusters and dynamical study of chemical reactivity. Theor Chem Acc 2009. [DOI: 10.1007/s00214-009-0615-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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