1
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Bouammali MA, Suaud N, Guihéry N, Maurice R. Antisymmetric Exchange in a Real Copper Triangular Complex. Inorg Chem 2022; 61:12138-12148. [PMID: 35895313 DOI: 10.1021/acs.inorgchem.2c00939] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The antisymmetric exchange, also known as the Dzyaloshinskii-Moriya interaction (DMI), is an effective interaction that may be at play in isolated complexes (with transition metals or lanthanides, for instance), nanoparticles, and highly correlated materials with adequate symmetry properties. While many theoretical works have been devoted to the analysis of single-ion zero-field splitting and to a lesser extent to symmetric exchange, only a few ab initio studies deal with the DMI. Actually, it originates from a subtle interplay between weak electronic interactions and spin-orbit couplings. This article aims to highlight the origin of this interaction from theoretical grounds in a real tri-copper(II) complex, capitalizing on previous methodological studies on bi-copper(II) model complexes. By tackling this three-magnetic-center system, we will first show that the multispin model Hamiltonian is appropriate for trinuclear (and likely for higher nuclearity) complexes, then that the correct application of the permutation relationship is necessary to explain the outcomes of the ab initio calculations, and finally, that the model parameters extracted from a binuclear model transfer well to the trinuclear complex. For a more theory-oriented purpose, we will show that the use of a simplified structural model allows one to perform more demanding electronic structure calculations. On this simpler system, we will first check that the previous transferability is still valid, prior to performing more advanced calculations on the derived two-magnetic-center model system. To this end, we will explain in detail the physics of the DMI in the copper triangle of interest, before advocating further theory/experiment efforts.
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Affiliation(s)
- Mohammed-Amine Bouammali
- Laboratoire de Chimie et Physique Quantiques, UMR5626, Université de Toulouse 3, Paul Sabatier, 18 route de Narbonne, 31062 Toulouse, France
| | - Nicolas Suaud
- Laboratoire de Chimie et Physique Quantiques, UMR5626, Université de Toulouse 3, Paul Sabatier, 18 route de Narbonne, 31062 Toulouse, France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques, UMR5626, Université de Toulouse 3, Paul Sabatier, 18 route de Narbonne, 31062 Toulouse, France
| | - Rémi Maurice
- SUBATECH, UMR CNRS 6457, IN2P3/IMT Atlantique/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307 Nantes Cedex 3, France.,Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)─UMR 6226, 35000 Rennes, France
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2
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Laurans M, Mattera M, Salles R, K’Bidi L, Gouzerh P, Renaudineau S, Volatron F, Guillemot G, Blanchard S, Izzet G, Solé-Daura A, Poblet JM, Proust A. When Identification of the Reduction Sites in Mixed Molybdenum/Tungsten Keggin-Type Polyoxometalate Hybrids Turns Out Tricky. Inorg Chem 2022; 61:7700-7709. [PMID: 35549467 PMCID: PMC9234957 DOI: 10.1021/acs.inorgchem.2c00866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Indexed: 12/01/2022]
Abstract
The mixed molybdenum/tungsten Keggin-type polyoxometalate (POM) hybrid (TBA)4[PW9Mo2O39{Sn(C6H4I)}] (TBA = tert-butylammonium) has been prepared by the reaction between [α-PW9Mo2O39]7- and [Cl3Sn(C6H4I)] in dried acetonitrile, in the presence of tetra-n-butylammonium bromide. A further coupling reaction affords the ferrocenyl derivative (TBA)4[PW9Mo2O39{Sn(C6H4)C≡C(C6H4)Fc}]. The POM hybrids have been thoroughly characterized by NMR and IR spectroscopies. Electrochemical analysis confirms their ease of reduction compared to the all-W analogue, albeit with a second reduction process occurring at a lower potential than in the all-Mo species. It is noteworthy that the second reduction is accompanied by an unusual red shift of the electronic absorption spectrum. Whereas there is no doubt that the first reduction deals with Mo, the location of the second electron in the bireduced species, on the second Mo or on W, has thus been the subject of a cross-investigation by spectroelectrochemistry, electron spin resonance, and theoretical calculations. Finally, it came out that the second reduction is also Mo-centered with two unpaired and antiferromagnetically coupled extra electrons.
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Affiliation(s)
- Maxime Laurans
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Michele Mattera
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Raphaël Salles
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Ludivine K’Bidi
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Pierre Gouzerh
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Séverine Renaudineau
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Florence Volatron
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Geoffroy Guillemot
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Sébastien Blanchard
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Guillaume Izzet
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Albert Solé-Daura
- Department
de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel-lí Domingo 1, 43007 Tarragona, Spain
| | - Josep M. Poblet
- Department
de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel-lí Domingo 1, 43007 Tarragona, Spain
| | - Anna Proust
- Institut
Parisien de Chimie Moléculaire, Sorbonne
Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
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3
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Chen JJ, Vilà-Nadal L, Solé-Daura A, Chisholm G, Minato T, Busche C, Zhao T, Kandasamy B, Ganin AY, Smith RM, Colliard I, Carbó JJ, Poblet JM, Nyman M, Cronin L. Effective Storage of Electrons in Water by the Formation of Highly Reduced Polyoxometalate Clusters. J Am Chem Soc 2022; 144:8951-8960. [PMID: 35536652 PMCID: PMC9171825 DOI: 10.1021/jacs.1c10584] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Aqueous
solutions of polyoxometalates (POMs) have been shown to
have potential as high-capacity energy storage materials due to their
potential for multi-electron redox processes, yet the mechanism of
reduction and practical limits are currently unknown. Herein, we explore
the mechanism of multi-electron redox processes that allow the highly
reduced POM clusters of the form {MO3}y to absorb y electrons in aqueous solution,
focusing mechanistically on the Wells–Dawson structure X6[P2W18O62], which comprises
18 metal centers and can uptake up to 18 electrons reversibly (y = 18) per cluster in aqueous solution when the countercations
are lithium. This unconventional redox activity is
rationalized by density functional theory, molecular dynamics simulations,
UV–vis, electron paramagnetic resonance spectroscopy, and small-angle
X-ray scattering spectra. These data point to a new phenomenon showing
that cluster protonation and aggregation allow the formation of highly
electron-rich meta-stable systems in aqueous solution, which produce
H2 when the solution is diluted. Finally, we show that
this understanding is transferrable to other salts of [P5W30O110]15– and [P8W48O184]40– anions, which
can be charged to 23 and 27 electrons per cluster, respectively.
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Affiliation(s)
- Jia-Jia Chen
- School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Laia Vilà-Nadal
- School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Albert Solé-Daura
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, Tarragona 43007, Spain
| | - Greig Chisholm
- School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Takuo Minato
- School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Christoph Busche
- School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Tingting Zhao
- School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Balamurugan Kandasamy
- School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Alexey Y Ganin
- School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Rachelle M Smith
- Department of Chemistry, Oregon State University, Corvallis, Oregon 07331, United States
| | - Ian Colliard
- Department of Chemistry, Oregon State University, Corvallis, Oregon 07331, United States
| | - Jorge J Carbó
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, Tarragona 43007, Spain
| | - Josep M Poblet
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, Tarragona 43007, Spain
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 07331, United States
| | - Leroy Cronin
- School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
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4
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Bandeira NAG, Liu H, Calhorda MJ. A lacunary tungstomolybdophosphate as an electronic pendulum: The "blue" electron under examination. J Chem Phys 2021; 154:124301. [PMID: 33810680 DOI: 10.1063/5.0039092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The photoreduction of a Keggin type lacunary tungstomolybdophosphate, α-(Bu4N)4[H3PW9Mo2O39], in acetonitrile, led to the formation of a monoreduced lacunary heteropoly anion, or a one electron reduced "heteropoly blue" species, whereby the added "blue" electron was captured by the molybdenum atoms. The magnetic properties and behavior of the "blue" electron were studied by a modified Evans nuclear magnetic resonance method (small downshift of the 31P signal) and variable-temperature electron paramagnetic resonance (g = 1.936 for MoV). The intermolecular exchange of the "blue" electron was limited by a geometrical factor, which requires the contact between Mo caps to exchange it between the heteropoly couple. The intramolecular exchange of the "blue" electron between Mo atoms was rather fast (5.3 × 109 s-1), with a rate of more than six orders of magnitude larger than the intermolecular exchange rate. Density functional theory was used to determine the most prevalent protonation sites in the mixed lacunary isomers with the aim of studying the intramolecular electron transfer pathway in the isolated [H4PW9Mo2O39]4- species. The singly occupied molecular orbital (SOMO) is essentially localized in one of the two nonequivalent molybdenum sites. The kinetics of the intramolecular electron exchange equilibrium MoV + MoVI → MoVI + MoV between the two molybdenum atoms bridged by an oxygen atom was found to be fast in agreement with the experimental result. The transition state is of mixed-valence type, with the SOMO delocalized over the Mo-O-Mo group. Spectroscopic parameters were found to be in fair agreement with experimental results.
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Affiliation(s)
- Nuno A G Bandeira
- BioISI - Biosystems and Integrative Sciences Institute, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016 Lisboa, Portugal
| | - Huizhang Liu
- BioISI - Biosystems and Integrative Sciences Institute, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016 Lisboa, Portugal
| | - Maria José Calhorda
- BioISI - Biosystems and Integrative Sciences Institute, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016 Lisboa, Portugal
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5
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Notario-Estévez A, López X, de Graaf C. Computational study of the staircase molecular conductivity of polyoxovanadates adsorbed on Au(111). Dalton Trans 2021; 50:5540-5551. [DOI: 10.1039/d1dt00731a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This computational study presents the molecular conduction properties of polyoxovanadates V6O19 (Lindqvist-type) and V18O42, as possible successors of the materials currently in use in complementary metal–oxide semiconductor (CMOS) technology.
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Affiliation(s)
| | - Xavier López
- Universitat Rovira i Virgili
- Departament de Química Física i Inorgànica
- 43007 Tarragona
- Spain
| | - Coen de Graaf
- Universitat Rovira i Virgili
- Departament de Química Física i Inorgànica
- 43007 Tarragona
- Spain
- ICREA
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6
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Zhang T, Solé-Daura A, Hostachy S, Blanchard S, Paris C, Li Y, Carbó JJ, Poblet JM, Proust A, Guillemot G. Modeling the Oxygen Vacancy at a Molecular Vanadium(III) Silica-Supported Catalyst. J Am Chem Soc 2018; 140:14903-14914. [PMID: 30362733 DOI: 10.1021/jacs.8b09048] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Here we report on the use of a silanol-decorated polyoxotungstate, [SbW9O33( tBuSiOH)3]3- (1), as a molecular support to describe the coordination of a vanadium atom at a single-site on silica surfaces. By reacting [V(Mes)3·thf] (Mes = 2,4,6-trimethylphenyl) with 1 in tetrahydrofuran, the vanadium(III) derivative [SbW9O33( tBuSiO)3V(thf)]3- (2) was obtained. Compound 2 displays the paramagnetic behavior expected for a d2-VIII high spin complex (SQUID measurements) with a triplet electronic ground state (ca. 30 kcal·mol-1 more stable than the singlet, from DFT calculations). Compound 2 proves to be a reliable model for reduced isolated-vanadium atom dispersed on silica surfaces [(≡Si-O)3VIII(OH2)], an intermediate that is often proposed in a Mars-van Krevelen type mechanism for partial oxidation of light alcohols. Oxidation of 2 under air produced the oxo-derivative [SbW9O33( tBuSiO)3VO]3- (3). In compound 2, the d2-electrons are localized in degenerated d(V) orbitals, whereas in the electronically analogous bireduced-[SbW9O33( tBuSiO)3VO]5-, 3·(2e), one electron is localized on d(V) orbital and the second one is delocalized on the polyoxotungstic framework, leading to a unique case of a bireduced heteropolyanion derivative with completely decoupled d1-V(IV) and d1-W(V). Our body of experimental results (EPR, magnetic measurements, spectroelectrochemical studies, Raman spectroscopy) and theoretical studies highlights (i) the role of the apical ligand coordination, i.e., thf (σ-donor) vs oxo (π-donor), in destabilizing or stabilizing the d(V) orbitals relative to the d(W) orbitals, and (ii) a geometrical distortion of the O3VO entity that causes a splitting of the degenerated orbitals and the stabilization of one d(V) orbital in the bireduced compound 3·(2e).
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Affiliation(s)
- Teng Zhang
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Albert Solé-Daura
- Department de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , 43007 Tarragona , Spain
| | - Sarah Hostachy
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Sébastien Blanchard
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Céline Paris
- Sorbonne Université , CNRS, De la Molécule aux Nano-objets: Réactivité, Interactions et Spectroscopies, MONARIS , 4 place Jussieu , F-75005 Paris , France
| | - Yanling Li
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Jorge J Carbó
- Department de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , 43007 Tarragona , Spain
| | - Josep M Poblet
- Department de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , 43007 Tarragona , Spain
| | - Anna Proust
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Geoffroy Guillemot
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
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7
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Notario-Estévez A, Kozłowski P, Linnenberg O, de Graaf C, López X, Monakhov KY. Decoding the role of encapsulated ions in the electronic and magnetic properties of mixed-valence polyoxovanadate capsules {X@V 22O 54} (X = ClO 4-, SCN -, VO 2F 2-): a combined theoretical approach. Phys Chem Chem Phys 2018; 20:17847-17858. [PMID: 29923560 DOI: 10.1039/c8cp02669f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The electronic structure and magnetism of mixed-valence, host-guest polyoxovanadates {X@VO54} with diamagnetic (X =) ClO4- (Td, 1) and SCN- (C∞v, 2) template anions are assessed by means of two theoretical methods: density functional theory and effective Hamiltonian calculations. The results are compared to those obtained for another member of this family with X = VO2F2- (C2v, 3) (see P. Kozłowski et al., Phys. Chem. Chem. Phys., 2017, 19, 29767-29771), for which complementary data are also acquired. It is demonstrated that the X guest anions strongly influence the electronic and magnetic properties of the system, leading to various valence states of vanadium and modifying V-O-V exchange interactions. Our findings are concordant with and elucidate the available experimental data (see K. Y. Monakhov et al., Chem. - Eur. J., 2015, 21, 2387-2397).
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Affiliation(s)
- Almudena Notario-Estévez
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, Marcel·lí Domingo 1, 43007 Tarragona, Spain.
| | - Piotr Kozłowski
- Faculty of Physics, Adam Mickiewicz University in Poznań, ul. Umultowska 85, 61-614 Poznań, Poland.
| | - Oliver Linnenberg
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Coen de Graaf
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, Marcel·lí Domingo 1, 43007 Tarragona, Spain. and ICREA, Passeig Lluís Companys 23, 08010, Barcelona, Spain
| | - Xavier López
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, Marcel·lí Domingo 1, 43007 Tarragona, Spain.
| | - Kirill Yu Monakhov
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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8
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Salomon W, Rivière E, López X, Suaud N, Mialane P, Haouas M, Saad A, Marrot J, Dolbecq A. Bicapped Keggin polyoxomolybdates: discrete species and experimental and theoretical investigations on the electronic delocalization in a chain compound. Dalton Trans 2018; 47:10636-10645. [DOI: 10.1039/c8dt01313f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Monomeric and 1D reduced Keggin polyoxometalates have been isolated as black crystals soluble in DMSO; DFT calculations allowed the explanation of the magnetic behavior.
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Affiliation(s)
- William Salomon
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- CNRS
- Université Paris Sud and Université Paris Saclay
- Orsay Cedex 91405
- France
| | - Xavier López
- Departament de Química Física i Inorgànica
- Universitat Rovira i Virgili
- 43007 Tarragona
- Spain
| | - Nicolas Suaud
- Laboratoire de Chimie et Physique Quantiques
- IRSAMC
- Université de Toulouse Paul Sabatier
- 31062 Toulouse Cedex
- France
| | - Pierre Mialane
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Mohamed Haouas
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Ali Saad
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Jérôme Marrot
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Anne Dolbecq
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
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9
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Pradines B, Lacombe L, Guihéry N, Suaud N. Study of the Electronic Structure of NiGa
2
S
4
and Extraction of the Spin Hamiltonian Parameters from Ab Initio Calculations. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Barthélémy Pradines
- Laboratoire de Chimie et Physique Quantiques, UMR5626 Université de Toulouse 3, Paul Sabatier 118 route de Narbonne 31062 Toulouse France
| | - Lionel Lacombe
- Laboratoire de Chimie et Physique Quantiques, UMR5626 Université de Toulouse 3, Paul Sabatier 118 route de Narbonne 31062 Toulouse France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques, UMR5626 Université de Toulouse 3, Paul Sabatier 118 route de Narbonne 31062 Toulouse France
| | - Nicolas Suaud
- Laboratoire de Chimie et Physique Quantiques, UMR5626 Université de Toulouse 3, Paul Sabatier 118 route de Narbonne 31062 Toulouse France
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10
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Bandeira NAG, Sadeghi O, Woods TJ, Zhang YZ, Schnack J, Dunbar K, Nyman M, Bo C. Magneto-Structural Analysis of Iron(III) Keggin Polyoxometalates. J Phys Chem A 2017; 121:1310-1318. [PMID: 28099014 DOI: 10.1021/acs.jpca.6b10763] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A computational study and magnetic susceptibility measurements of three homonuclear Fe(III) Keggin structures are herein presented: the [FeO4@Fe12F24(μ-OCH3)12]5- anion (1), the [Bi6{FeO4@Fe12O12(OH)12}(μ-O2CCCl3)12]+ cation (2) and its polymorph [Bi6{FeO4@Fe12O12(OH)10(H2O)2}(μ-O2CCF3)10]3+ (3). These results are contrasted with the exchange interactions present in the previously characterized [Fe6(OH)3Ge2W18O68(OH)6]11- and [H12As4Fe8W30O120(H2O)2]4- anions. The computational analysis shows that the most significant antiferromagnetic spin coupling takes place at the junction between each of the {Fe3O6(OH)3}/{Fe3F6(OCH3)3} framework motifs, a possibility that had been previously discarded in the literature on the basis of the Fe-Fe distances. For all the examined iron(III) Keggin structures, it is found that the magnitude of the magnetic couplings within each structural subunit follows the same trend.
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Affiliation(s)
- Nuno A G Bandeira
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16, Tarragona 43007, Spain.,Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa , Campo Grande, 1749-016 Lisboa, Portugal.,Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa , Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Omid Sadeghi
- Department of Chemistry, Oregon State University , Corvallis, Oregon 97331, United States
| | - Toby J Woods
- Chemistry Department Texas A&M University , P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Yuan-Zhu Zhang
- Chemistry Department Texas A&M University , P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Jürgen Schnack
- Fakultät für Physik, Universität Bielefeld , Postfach 100131, D-33501 Bielefeld, Germany
| | - Kim Dunbar
- Chemistry Department Texas A&M University , P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - May Nyman
- Department of Chemistry, Oregon State University , Corvallis, Oregon 97331, United States
| | - Carles Bo
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16, Tarragona 43007, Spain.,Chemistry Department Texas A&M University , P.O. Box 30012, College Station, Texas 77842-3012, United States.,Departament de Química-Física i Inorgànica, Universitat Rovira i Virgili , Carrer Marcel·lí Domingo, Tarragona 43007, Spain
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Ci C, Carbó JJ, Neumann R, Graaf CD, Poblet JM. Photoreduction Mechanism of CO2 to CO Catalyzed by a Rhenium(I)–Polyoxometalate Hybrid Compound. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01638] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chenggang Ci
- Department
de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, Tarragona 43007, Spain
- Department
of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyun 558000, People’s Republic of China
- Institute
of Polyoxometalate Chemistry, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, People’s Republic of China
| | - Jorge J. Carbó
- Department
de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, Tarragona 43007, Spain
| | - Ronny Neumann
- Department
of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Coen de Graaf
- Department
de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, Tarragona 43007, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluis Companys 23, Barcelona 08010, Spain
| | - Josep M. Poblet
- Department
de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, Tarragona 43007, Spain
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12
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Krawczyk MS, Krawczyk MK, Siczek M, Lis T. On the origin of oxygen in Re6(μ-O)12 core in cubo-octahedral hexanuclear rhenium clusters. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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