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Halcrow MA, Vasili HB, Pask CM, Kulak AN, Cespedes O. Activating a high-spin iron(II) complex to thermal spin-crossover with an inert non-isomorphous molecular dopant. Dalton Trans 2024; 53:6983-6992. [PMID: 38563124 DOI: 10.1039/d4dt00443d] [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: 04/04/2024]
Abstract
[Fe(bpp)2][ClO4]2 (bpp = 2,6-bis{pyrazol-1-yl}pyridine; monoclinic, C2/c) is high-spin between 5-300 K, and crystallises with a highly distorted molecular geometry that lies along the octahedral-trigonal prismatic distortion pathway. In contrast, [Ni(bpp)2][ClO4]2 (monoclinic, P21) adopts a more regular, near-octahedral coordination geometry. Gas phase DFT minimisations (ω-B97X-D/6-311G**) of [M(bpp)2]2+ complexes show the energy penalty associated with that coordination geometry distortion runs as M2+ = Fe2+ (HS) ≈ Mn2+ (HS) < Zn2+ ≈ Co2+ (HS) ≲ Cu2+ ≪ Ni2+ ≪ Ru2+ (LS; HS = high-spin, LS = low-spin). Slowly crystallised solid solutions [FexNi1-x(bpp)2][ClO4]2 with x = 0.53 (1a) and 0.74 (2a) adopt the P21 lattice, while x = 0.87 (3a) and 0.94 (4a) are mixed-phase materials with the high-spin C2/c phase as the major component. These materials exhibit thermal spin-transitions at T½ = 250 ± 1 K which occurs gradually in 1a, and abruptly and with narrow thermal hysteresis in 2a-4a. The transition proceeds to 100% completeness in 1a and 2a; that is, the 26% Ni doping in 2a is enough to convert high-spin [Fe(bpp)2][ClO4]2 into a cooperative, fully SCO-active material. These results were confirmed crystallographically for 1a and 2a, which revealed similarities and differences between these materials and the previously published [FexNi1-x(bpp)2][BF4]2 series. Rapidly precipitated powders with the same compositions (1b-4b) mostly resemble 1a-4a, except that 2b is a mixed-phase material; 2b-4b also contain a fraction of amorphous solid in addition to the two crystal phases. The largest iron fraction that can be accommodated by the P21 phase in this system is 0.7 ± 0.1.
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Affiliation(s)
- Malcolm A Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
| | - Hari Babu Vasili
- School of Physics and Astronomy, University of Leeds, W. H. Bragg Building, Leeds, LS2 9JT, UK
| | - Christopher M Pask
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
| | - Alexander N Kulak
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
| | - Oscar Cespedes
- School of Physics and Astronomy, University of Leeds, W. H. Bragg Building, Leeds, LS2 9JT, UK
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Affes K, Singh Y, Boukheddaden K. Electro-Elastic Modeling of Thermal Spin Transition in Diluted Spin-Crossover Single Crystals. Int J Mol Sci 2022; 23:ijms232213854. [PMID: 36430337 PMCID: PMC9694739 DOI: 10.3390/ijms232213854] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 10/27/2022] [Accepted: 11/02/2022] [Indexed: 11/12/2022] Open
Abstract
Spin-crossover solids have been studied for many years for their promising applications as optical switches and reversible high-density memories for information storage. This study reports the effect of random metal dilution on the thermal and structural properties of a spin-crossover single crystal. The analysis is performed on a 2D rectangular lattice using an electro-elastic model. The lattice is made of sites that can switch thermally between the low-spin and high-spin states, accompanied by local volume changes. The model is solved by Monte Carlo simulations, running on the spin states and atomic positions of this compressible 2D lattice. A detailed analysis of metal dilution on the magneto-structural properties allows us to address the following issues: (i) at low dilution rates, the transition is of the first order; (ii) increasing the concentration of dopant results in a decrease in cooperativity and leads to gradual transformations above a threshold concentration, while incomplete spin transitions are obtained for big dopant sizes. The effects of the metal dilution on the spatiotemporal aspects of the spin transition along the thermal transition and on the low-temperature relaxation of the photo-induced metastable high-spin states are also studied. Significant changes in the organization of the spin states are observed for the thermal transition, where the single-domain nucleation caused by the long-range elastic interactions is replaced by a multi-droplet nucleation. As to the issue of the relaxation curves: their shape transforms from a sigmoidal shape, characteristic of strong cooperative systems, into stretched exponentials for high dilution rates, which is the signature of a disordered system.
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Affiliation(s)
- Karim Affes
- GEMaC, CNRS, Université de Versailles Saint Quentin en Yvelines, 45 Avenue des Etats Unis, CEDEX, 78035 Versailles, France
- Laboratoire des Matériaux Multifonctionnels et Applications, Faculté des Sciences de Sfax, Université de Sfax, Route de la Soukra km 3.5, Sfax 3000, Tunisia
| | - Yogendra Singh
- GEMaC, CNRS, Université de Versailles Saint Quentin en Yvelines, 45 Avenue des Etats Unis, CEDEX, 78035 Versailles, France
| | - Kamel Boukheddaden
- GEMaC, CNRS, Université de Versailles Saint Quentin en Yvelines, 45 Avenue des Etats Unis, CEDEX, 78035 Versailles, France
- Correspondence:
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Cazelles C, Linares J, Dahoo P, Boukheddaden K. A Generalized Ising-like Model for Spin Crossover Nanoparticles. Magnetochemistry 2022; 8:49. [DOI: 10.3390/magnetochemistry8050049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Cooperative spin crossover (SCO) materials exhibit first-order phase transitions in the solid state, between the high-spin (HS) and low-spin (LS) states. Elastic long-range interactions are the basic mechanism for this particular behavior and are described well by the Ising-like model, which allows the reproduction of most of the experimental results in the literature. Until now, this model has been applied with an interaction parameter between the molecules, which is considered to be independent of the states. In this contribution, we extend the Ising-like model to include interaction energy that depends on the spin states and apply it to study SCO nanoparticles. Our research shows that following this new hypothesis, the equilibrium temperature shifts toward higher values.
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Linares J, Cazelles C, Dahoo P, Boukheddaden K. A First Order Phase Transition Studied by an Ising-Like Model Solved by Entropic Sampling Monte Carlo Method. Symmetry (Basel) 2021; 13:587. [DOI: 10.3390/sym13040587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Two-dimensional (2D) square, rectangular and hexagonal lattices and 3D parallelepipedic lattices of spin crossover (SCO) compounds which represent typical examples of first order phase transitions compounds are studied in terms of their size, shape and model through an Ising-like Hamiltonian in which the fictitious spin states are coupled via the respective short and long-range interaction parameters J, and G. Furthermore, an environmental L parameter accounting for surface effects is also introduced. The wealth of SCO transition properties between its bi-stable low spin (LS) and high spin (HS) states are simulated using Monte Carlo Entropic Sampling (MCES) method which favors the scanning of macro states of weak probability occurrences. For given J and G, the focus is on surface effects through parameter L. It is shown that the combined first-order phase transition effects of the parameters of the Hamiltonian can be highlighted through two typical temperatures, TO.D., the critical order-disorder temperature and Teq the equilibrium temperature that is fixed at zero effective ligand field. The relative positions of TO.D. and Teq control the nature of the transition and mediate the width and position of the thermal hysteresis curves with size and shape. When surface effects are negligible (L = 0), the equilibrium transition temperature, Teq. becomes constant, while the thermal hysteresis’ width increases with size. When surface effects are considered, L ≠ 0, Teq. increases with size and the first order transition vanishes in favor of a gradual transition until reaching a threshold size, below which a reentrance phenomenon occurs and the thermal hysteresis reappears again, as shown for hexagonal configuration.
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Abstract
The spin crossover (SCO) phenomenon represents a source of multistability at the molecular level, and dilution into a nonactive host was originally key to understand its cooperative nature and the parameters governing it in the solid state. Here, we devise a molecular alloying approach in which all components are SCO-active, but with significantly different characteristic temperatures. Thus, the molecular material [Fe(Mebpp)2](ClO4)2 (2) has been doped with increasing amounts of the ligand Me2bpp (Mebpp and Me2bpp = methyl- and bis-methyl-substituted bis-pyrazolylpyridine ligands), yielding molecular alloys with the formula [Fe(Mebpp)2-2x(Me2bpp)2x](ClO4)2 (4x; 0.05 < x < 0.5). The effect of the composition on the SCO process is studied through single-crystal X-ray diffraction (SCXRD), magnetometry, and differential scanning calorimetry (DSC). While the attenuation of intermolecular interactions is shown to have a strong effect on the SCO cooperativity, the spin conversion was found to occur at intermediate temperatures and in one sole step for all components of the alloys, thus unveiling an unprecedented allosteric SCO process. This effect provides in turn a means of tuning the SCO temperature within a range of 42 K.
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Affiliation(s)
- Carlos Bartual-Murgui
- Departament de Quı́mica Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Cristian Pérez-Padilla
- Departament de Quı́mica Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Simon J Teat
- Advanced Light Source, Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Olivier Roubeau
- Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC and Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Guillem Aromí
- Departament de Quı́mica Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.,Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB), Barcelona, Spain
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Kajikawa S, Muraoka A. Theoretical study of the Fe(btr)2(NCS)2 spin-crossover complex with reparameterized density functionals. Chem Phys Lett 2020; 738:136867. [DOI: 10.1016/j.cplett.2019.136867] [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: 12/30/2022]
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7
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Vicente AI, Ferreira LP, Carvalho MDD, Rodrigues VHN, Dîrtu MM, Garcia Y, Calhorda MJ, Martinho PN. Selecting the spin crossover profile with controlled crystallization of mononuclear Fe(iii) polymorphs. Dalton Trans 2018; 47:7013-7019. [PMID: 29737355 DOI: 10.1039/c8dt00227d] [Citation(s) in RCA: 6] [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: 11/21/2022]
Abstract
Two polymorphic species of the [Fe(5-Br-salEen)2]ClO4 compound were obtained, each of them being selectively recovered after evaporation of the solvent at a controlled rate. While polymorph 1a is formed during slow evaporation, fast evaporation favors polymorph 1b. The importance of the evaporation rate was recognized after detailed studies of the reaction temperature, solvent evaporation rate and crystallization temperature effects. The complex in the new polymorphic form 1a showed an abrupt spin crossover at 172 K with a small 1 K hysteresis window and over a narrow 10 K range. 57Fe Mössbauer spectroscopy and differential scanning calorimetry, complemented by X-ray studies for both the high-spin and low-spin forms, were used to further characterize the new polymorphic phase 1a. Both polymorphs are based on the same Fe(iii) complex cation hydrogen bonded to the perchlorate anion. These units are loosely bound in the crystals via weak interactions. In the new polymorph 1a, the hydrogen bonds are stronger, while the weak hydrogen and halogen bonds, as well as π-π stacking, create a cooperative network, not present in 1b, responsible for the spin transition profile.
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Affiliation(s)
- Ana I Vicente
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
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Smeets V, Wolff M, Wolny JA, Schünemann V, Dîrtu MM, Ge J, Vanacken J, Moshchalkov V, Garcia Y. Spin State Crossover, Vibrational, Computational, and Structural Studies of Fe
II
1‐Isopropyl‐1
H
‐tetrazole Derivatives. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700981] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Valentin Smeets
- Institute of Condensed Matter and Nanosciences, Molecules, Solids, Reactivity (IMCN/MOST) Université catholique de Louvain Place Louis Pasteur 1 1348 Louvain‐la‐Neuve Belgium
| | - Mariusz Wolff
- Institute of Condensed Matter and Nanosciences, Molecules, Solids, Reactivity (IMCN/MOST) Université catholique de Louvain Place Louis Pasteur 1 1348 Louvain‐la‐Neuve Belgium
- Institute of Chemistry University of Silesia 9th Szkolna Street Katowice Poland
| | - Juliusz A. Wolny
- Department of Physics University of Kaiserslautern 67663 Kaiserslautern Germany
| | - Volker Schünemann
- Department of Physics University of Kaiserslautern 67663 Kaiserslautern Germany
| | - Marinela M. Dîrtu
- Institute of Condensed Matter and Nanosciences, Molecules, Solids, Reactivity (IMCN/MOST) Université catholique de Louvain Place Louis Pasteur 1 1348 Louvain‐la‐Neuve Belgium
| | - Jun‐Yi Ge
- Solid State Physics and Magnetism Section Katholieke Universiteit Leuven Celestijnenlaan 200d 3001 Leuven Belgium
| | - Johan Vanacken
- Solid State Physics and Magnetism Section Katholieke Universiteit Leuven Celestijnenlaan 200d 3001 Leuven Belgium
| | - Victor Moshchalkov
- Solid State Physics and Magnetism Section Katholieke Universiteit Leuven Celestijnenlaan 200d 3001 Leuven Belgium
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences, Molecules, Solids, Reactivity (IMCN/MOST) Université catholique de Louvain Place Louis Pasteur 1 1348 Louvain‐la‐Neuve Belgium
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9
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Dîrtu MM, Naik AD, Rotaru A, Spinu L, Poelman D, Garcia Y. FeII Spin Transition Materials Including an Amino–Ester 1,2,4-Triazole Derivative, Operating at, below, and above Room Temperature. Inorg Chem 2016; 55:4278-95. [DOI: 10.1021/acs.inorgchem.6b00015] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [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)
- Marinela M. Dîrtu
- Institute
of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity, Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Anil D. Naik
- Institute
of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity, Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Aurelian Rotaru
- Department of Electrical Engineering and Computer Science & MANSiD Research Center, “Stefan cel Mare” University, University Street, 13, Suceava 720229 Romania
| | - Leonard Spinu
- Advanced
Materials Research Institute, Department of Physics, University of New Orleans (UNO), New Orleans, Louisiana 70148 United States
| | - Dirk Poelman
- Lumilab
Department Solid State Sciences, Ghent University, Krijgslaan 281, S1, B-9000 Gent, Belgium
| | - Yann Garcia
- Institute
of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity, Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
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10
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Jureschi CM, Linares J, Boulmaali A, Dahoo PR, Rotaru A, Garcia Y. Pressure and Temperature Sensors Using Two Spin Crossover Materials. Sensors (Basel) 2016; 16:187. [PMID: 26848663 PMCID: PMC4801564 DOI: 10.3390/s16020187] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 01/25/2016] [Accepted: 01/27/2016] [Indexed: 11/16/2022]
Abstract
The possibility of a new design concept for dual spin crossover based sensors for concomitant detection of both temperature and pressure is presented. It is conjectured from numerical results obtained by mean field approximation applied to a Ising-like model that using two different spin crossover compounds containing switching molecules with weak elastic interactions it is possible to simultaneously measure P and T. When the interaction parameters are optimized, the spin transition is gradual and for each spin crossover compounds, both temperature and pressure values being identified from their optical densities. This concept offers great perspectives for smart sensing devices.
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Affiliation(s)
- Catalin-Maricel Jureschi
- Faculty of Electrical Engineering and Computer Science & Research Center MANSiD, Stefan cel Mare University, Suceava 720229, Romania.
- LISV, Université de Versailles Saint-Quentin-en-Yvelines, Université Paris Saclay, Velizy 78140, France.
| | - Jorge Linares
- GEMaC, Université de Versailles Saint-Quentin-en-Yvelines, CNRS-UVSQ (UMR 8635), Université Paris Saclay, Versailles Cedex 78035, France.
| | - Ayoub Boulmaali
- LATMOS, Université de Versailles-Saint-Quentin-en-Yvelines, Sorbonne Universités, CNRS-UMR 8190, Université Paris Saclay, Guyancourt F-78280, France.
| | - Pierre Richard Dahoo
- LATMOS, Université de Versailles-Saint-Quentin-en-Yvelines, Sorbonne Universités, CNRS-UMR 8190, Université Paris Saclay, Guyancourt F-78280, France.
| | - Aurelian Rotaru
- Faculty of Electrical Engineering and Computer Science & Research Center MANSiD, Stefan cel Mare University, Suceava 720229, Romania.
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), Université Catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
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11
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Dîrtu MM, Schmit F, Naik AD, Rusu I, Rotaru A, Rackwitz S, Wolny JA, Schünemann V, Spinu L, Garcia Y. Two-Step Spin Transition in a 1D FeII1,2,4-Triazole Chain Compound. Chemistry 2015; 21:5843-55. [DOI: 10.1002/chem.201406231] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 01/18/2015] [Indexed: 11/10/2022]
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12
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Jureschi CM, Linares J, Rotaru A, Ritti MH, Parlier M, Dîrtu MM, Wolff M, Garcia Y. Pressure sensor via optical detection based on a 1D spin transition coordination polymer. Sensors (Basel) 2015; 15:2388-98. [PMID: 25621610 PMCID: PMC4367311 DOI: 10.3390/s150202388] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 01/13/2015] [Accepted: 01/16/2015] [Indexed: 11/23/2022]
Abstract
We have investigated the suitability of using the 1D spin crossover coordination polymer [Fe(4-(2′-hydroxyethyl)-1,2,4-triazole)3]I2·H2O, known to crossover around room temperature, as a pressure sensor via optical detection using various contact pressures up to 250 MPa. A dramatic persistent colour change is observed. The experimental data, obtained by calorimetric and Mössbauer measurements, have been used for a theoretical analysis, in the framework of the Ising-like model, of the thermal and pressure induced spin state switching. The pressure (P)-temperature (T) phase diagram calculated for this compound has been used to obtain the P-T bistability region.
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Affiliation(s)
- Cătălin M Jureschi
- Department of Electrical Engineering and Computer Science and Advanced Materials and Nanotechnology Laboratory (AMNOL), "Stefan cel Mare" University, University Street 13, Suceava 720229, Romania.
| | - Jorge Linares
- Groupe d'Etude de la Matière Condensée (GEMaC), CNRS-UMR 8635, Université Versailles St Quentin, Versailles Cedex 78035, France.
| | - Aurelian Rotaru
- Department of Electrical Engineering and Computer Science and Advanced Materials and Nanotechnology Laboratory (AMNOL), "Stefan cel Mare" University, University Street 13, Suceava 720229, Romania.
| | - Marie Hélène Ritti
- ONERA - DMSC, 29 Avenue de la Division Leclerc, BP72, Chatillon Cedex 92322, France.
| | - Michel Parlier
- ONERA - DMSC, 29 Avenue de la Division Leclerc, BP72, Chatillon Cedex 92322, France.
| | - Marinela M Dîrtu
- Institute of Condensed Matter and Nanosciences, Molecules, Solids, Reactivity (IMCN/MOST), Université catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
| | - Mariusz Wolff
- Institute of Condensed Matter and Nanosciences, Molecules, Solids, Reactivity (IMCN/MOST), Université catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences, Molecules, Solids, Reactivity (IMCN/MOST), Université catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
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13
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Lochenie C, Bauer W, Railliet AP, Schlamp S, Garcia Y, Weber B. Large Thermal Hysteresis for Iron(II) Spin Crossover Complexes with N-(Pyrid-4-yl)isonicotinamide. Inorg Chem 2014; 53:11563-72. [DOI: 10.1021/ic501624b] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Charles Lochenie
- Inorganic Chemistry II, Universität Bayreuth, Universitätsstrasse
30, NW I, 95440 Bayreuth, Germany
- Insitute of Condensed Matter
and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), Université Catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Wolfgang Bauer
- Inorganic Chemistry II, Universität Bayreuth, Universitätsstrasse
30, NW I, 95440 Bayreuth, Germany
| | - Antoine P. Railliet
- Insitute of Condensed Matter
and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), Université Catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Stephan Schlamp
- Inorganic Chemistry II, Universität Bayreuth, Universitätsstrasse
30, NW I, 95440 Bayreuth, Germany
| | - Yann Garcia
- Insitute of Condensed Matter
and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), Université Catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Birgit Weber
- Inorganic Chemistry II, Universität Bayreuth, Universitätsstrasse
30, NW I, 95440 Bayreuth, Germany
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Slimani A, Yu X, Muraoka A, Boukheddaden K, Yamashita K. Reparametrization Approach of DFT Functionals Based on the Equilibrium Temperature of Spin-Crossover Compounds. J Phys Chem A 2014; 118:9005-12. [DOI: 10.1021/jp501943h] [Citation(s) in RCA: 17] [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: 11/28/2022]
Affiliation(s)
- Ahmed Slimani
- Department
of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8656, Japan
| | - Xuefang Yu
- Department
of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8656, Japan
| | - Azusa Muraoka
- Department
of Physics, Meiji University, 1-1-1 Higashi-Mita, Tama-Ku, Kawasaki-shi, Kanagawa 214-8571, Japan
| | - Kamel Boukheddaden
- Groupe
d’Etude de la matière Condensée, CNRS-Université de Versailles 45, Avenue des Etats Unis, 78035 Versailles, Cedex, France
| | - Koichi Yamashita
- Department
of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-8656, Japan
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15
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Zheng S, Siegler MA, Sánchez Costa J, Fu WT, Bonnet S. Effect of Metal Dilution on the Thermal Spin Transition of [FexZn1-x(bapbpy)(NCS)2]. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201183] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sorai M, Nakazawa Y, Nakano M, Miyazaki Y. Update 1 of: Calorimetric Investigation of Phase Transitions Occurring in Molecule-Based Magnets. Chem Rev 2013; 113:PR41-122. [DOI: 10.1021/cr300156s] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michio Sorai
- Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Yasuhiro Nakazawa
- Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Motohiro Nakano
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871,
Japan
| | - Yuji Miyazaki
- Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Dîrtu MM, Schmit F, Naik AD, Rotaru A, Marchand-Brynaert J, Garcia Y. Spin transition sensors based on β-amino-acid 1,2,4-triazole derivative. Int J Mol Sci 2011; 12:5339-51. [PMID: 21954363 PMCID: PMC3179170 DOI: 10.3390/ijms12085339] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 08/11/2011] [Accepted: 08/12/2011] [Indexed: 12/01/2022] Open
Abstract
A β-aminoacid ester was successfully derivatized to yield to 4H-1,2-4-triazol-4-yl-propionate (βAlatrz) which served as a neutral bidentate ligand in the 1D coordination polymer [Fe(βAlatrz)3](CF3SO3)2·0.5H2O (1·0.5H2O). The temperature dependence of the high-spin molar fraction derived from 57Fe Mossbauer spectroscopy recorded on cooling below room temperature reveals an exceptionally abrupt single step transition between high-spin and low-spin states with a hysteresis loop of width 4 K (Tc↑ = 232 K and Tc↓ = 228 K) in agreement with magnetic susceptibility measurements. The material presents striking reversible thermochromism from white, at room temperature, to pink on quench cooling to liquid nitrogen, and acts as an alert towards temperature variations. The phase transition is of first order, as determined by differential scanning calorimetry, with transition temperatures matching the ones determined by SQUID and Mössbauer spectroscopy. The freshly prepared sample of 1·0.5H2O, dried in air, was subjected to annealing at 390 K, and the obtained white compound [Fe(βAlatrz)3](CF3SO3)2 (1) was found to exhibit a similar spin transition curve however much temperature was increased by (Tc↑ = 252 K and Tc↓ = 248 K). The removal of lattice water molecules from 1·0.5H2O is not accompanied by a change of the morphology and of the space group, and the chain character is preserved. However, an internal pressure effect stabilizing the low-spin state is evidenced.
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Affiliation(s)
- Marinela M. Dîrtu
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium; E-Mails: (M.M.D.); (F.S.); (A.D.N.); (J.M.-B.)
| | - France Schmit
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium; E-Mails: (M.M.D.); (F.S.); (A.D.N.); (J.M.-B.)
| | - Anil D. Naik
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium; E-Mails: (M.M.D.); (F.S.); (A.D.N.); (J.M.-B.)
| | - Aurelian Rotaru
- Department of Electrical Engineering and Computer Science, “Stefan cel Mare” University, University Street 13, Suceava 720229, Romania; E-Mail:
| | - J. Marchand-Brynaert
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium; E-Mails: (M.M.D.); (F.S.); (A.D.N.); (J.M.-B.)
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium; E-Mails: (M.M.D.); (F.S.); (A.D.N.); (J.M.-B.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +32-0-10472831; Fax: +32-0-10472330
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Weber B, Bauer W, Pfaffeneder T, Dîrtu MM, Naik AD, Rotaru A, Garcia Y. Influence of Hydrogen Bonding on the Hysteresis Width in Iron(II) Spin-Crossover Complexes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100394] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kusz J, Bronisz R, Zubko M, Bednarek G. On the Role of Intermolecular Interactions on Structural and Spin-Crossover Properties of 2D Coordination Networks [Fe(bbtr)3]A2 (bbtr=1,4-bis(1,2,3-triazol-1-yl)butane; A=ClO4−, BF4−). Chemistry 2011; 17:6807-20. [PMID: 21547970 DOI: 10.1002/chem.201100394] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Indexed: 11/08/2022]
Affiliation(s)
- Joachim Kusz
- Institute of Physics, University of Silesia, Katowice, Poland
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Dîrtu MM, Neuhausen C, Naik AD, Rotaru A, Spinu L, Garcia Y. Insights into the Origin of Cooperative Effects in the Spin Transition of [Fe(NH2trz)3](NO3)2: the Role of Supramolecular Interactions Evidenced in the Crystal Structure of [Cu(NH2trz)3](NO3)2·H2O. Inorg Chem 2010; 49:5723-36. [DOI: 10.1021/ic100667f] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [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)
- Marinela M. Dîrtu
- Institut de la Matière Condensée et des Nanosciences, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Christine Neuhausen
- Ecole Polytechnique Fédérale de Lausanne, Institut de physique des systèmes biologiques, Bât. Sciences Physiques UNIL, Lausanne, 1015, Switzerland
| | - Anil D. Naik
- Institut de la Matière Condensée et des Nanosciences, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | | | - Leonard Spinu
- Advanced Materials Research Institute
- Department of Physics
| | - Yann Garcia
- Institut de la Matière Condensée et des Nanosciences, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
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Kitchen JA, Brooker S. Two dicobalt(iii) complexes of triazolate-containing [2+2] Schiff-base macrocycles coordinate thiocyanate ions via the sulfur atom. Dalton Trans 2010; 39:3358-60. [DOI: 10.1039/b925745d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dîrtu MM, Rotaru A, Gillard D, Linares J, Codjovi E, Tinant B, Garcia Y. Prediction of the Spin Transition Temperature in FeII One-Dimensional Coordination Polymers: an Anion Based Database. Inorg Chem 2009; 48:7838-52. [DOI: 10.1021/ic900814b] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marinela M. Dîrtu
- Unité de Chimie des Matériaux Inorganiques et Organiques, Département de Chimie, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Aurelian Rotaru
- Groupe d’Etude de la Matière Condensée, 45 avenue des Etats-Unis, Université de Versailles Saint Quentin en Yvelines, 78035 Versailles Cedex, France
- Department of Solid State and Theoretical Physics, “Alexandru Ioan Cuza” University, 700506 Iasi, Romania
| | - Damien Gillard
- Unité de Chimie des Matériaux Inorganiques et Organiques, Département de Chimie, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Jorge Linares
- Groupe d’Etude de la Matière Condensée, 45 avenue des Etats-Unis, Université de Versailles Saint Quentin en Yvelines, 78035 Versailles Cedex, France
| | - Epiphane Codjovi
- Groupe d’Etude de la Matière Condensée, 45 avenue des Etats-Unis, Université de Versailles Saint Quentin en Yvelines, 78035 Versailles Cedex, France
| | - Bernard Tinant
- Unité de Chimie Structurale et des Mécanismes Réactionnels, Département de Chimie, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Yann Garcia
- Unité de Chimie des Matériaux Inorganiques et Organiques, Département de Chimie, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
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