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Shahed H, Sharma N, Angst M, Voigt J, Perßon J, Prakash P, Törnroos KW, Chernyshov D, Gildenast H, Ohl M, Saffarini G, Grzechnik A, Friese K. Structural insight into the cooperativity of spin crossover compounds. Acta Crystallogr B Struct Sci Cryst Eng Mater 2023; 79:354-367. [PMID: 37578185 PMCID: PMC10552598 DOI: 10.1107/s2052520623005814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 07/02/2023] [Indexed: 08/15/2023]
Abstract
Spin-crossover (SCO) compounds are promising materials for a wide variety of industrial applications. However, the fundamental understanding of their nature of transition and its effect on the physical properties are still being fervently explored; the microscopic knowledge of their transition is essential for tailoring their properties. Here an attempt is made to correlate the changes in macroscopic physical properties with microscopic structural changes in the orthorhombic and monoclinic polymorphs of the SCO compound Fe(PM-Bia)2(NCS)2 (PM = N-2'-pyridylmethylene and Bia = 4-aminobiphenyl) by employing single-crystal X-ray diffraction, magnetization and DSC measurements. The dependence of macroscopic properties on cooperativity, highlighting the role of hydrogen bonding, π-π and van der Waals interactions is discussed. Values of entropy, enthalpy and cooperativity are calculated numerically based on the Slichter-Drickamer model. The particle size dependence of the magnetic properties is probed along with the thermal exchange and the kinetic behavior of the two polymorphs based on the dependence of magnetization on temperature scan rate and a theoretical model is proposed for the calculation of the non-equilibrium spin-phase fraction. Also a scan-rate-dependent two-step behavior observed for the orthorhombic polymorph, which is absent for the monoclinic polymorph, is reported. Moreover, it is found that the radiation dose from synchrotron radiation affects the spin-crossover process and shifts the transition region to lower temperatures, implying that the spin crossover can be tuned with radiation damage.
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Affiliation(s)
- H. Shahed
- Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institute (PGI-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
- Institute of Crystallography, RWTH Aachen University, Jägerstr. 17-19, 52066 Aachen, Germany
| | - N. Sharma
- Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institute (PGI-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - M. Angst
- Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institute (PGI-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - J. Voigt
- Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institute (PGI-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - J. Perßon
- Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institute (PGI-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - P. Prakash
- Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institute (PGI-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - K. W. Törnroos
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - D. Chernyshov
- Swiss–Norwegian Beamlines at the European Synchrotron Radiation Facility, 38000 Grenoble, France
| | - H. Gildenast
- Institute of Inorganic Chemistry, RWTH Aachen University, 52074 Aachen, Germany
| | - M. Ohl
- Jülich Centre for Neutron Science (JCNS-1), Forschungszentrum Jülich, 52425 Jülich, Germany
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - G. Saffarini
- Physics Department, An-Najah National University, Nablus, Palestine
| | - A. Grzechnik
- Institute of Crystallography, RWTH Aachen University, Jägerstr. 17-19, 52066 Aachen, Germany
- Jülich Centre for Neutron Science (JCNS-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - K. Friese
- Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institute (PGI-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
- Institute of Crystallography, RWTH Aachen University, Jägerstr. 17-19, 52066 Aachen, Germany
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Dutta M, Bisht S, Ghosh P, Chilug AI, Mann D, Enachescu C, Shatruk M, Chakraborty P. Combined Experimental and Mechanoelastic Modeling Studies on the Low-Spin Stabilized Mixed Crystals of 3D Oxalate-Based Coordination Materials. Inorg Chem 2023; 62:15050-15062. [PMID: 37677120 DOI: 10.1021/acs.inorgchem.3c01919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Structural studies involving single-crystal and powder X-ray diffraction analysis have been performed on dehydrated coordination networks of the [NixCo1-x(bpy)3][LiCr(ox)3] series, 0 ≤ x ≤ 1, (bpy = 2,2'-bipyridine). The high-symmetry cubic 3D structure of these materials is formed by oxalate anions bridging alternating Cr3+ and Li+ ions into an anionic framework, which contains large cavities that incorporate the [NixCo1-x(bpy)3]2+ cations. Irrespective of the Co/Ni ratio, all of the mixed samples are phase-pure and retain the high-symmetry cubic structure, with the lattice parameters gradually decreasing upon increasing Ni(II) concentration. The influence of the Ni(II) dilution on the magnetic behavior of these materials is substantial. For pure [Co(bpy)3][LiCr(ox)3], a gradual but incomplete thermal spin-crossover is evident due to the effect of the chemical pressure applied by the [LiCr(ox)3]2- framework, which stabilizes the low-spin (LS) 2E state relative to the high-spin (HS) 4T1 state of the Co(II) ion. Upon increasing the Ni(II) content, the spin-crossover becomes even more gradual and incomplete and eventually is not observed for pure [Ni(bpy)3][LiCr(ox)3]. The average spin-crossover temperature increases with the increasing Ni(II) content, suggesting a higher degree of chemical pressure applied by the oxalate framework manifested by changing the ΔE0HL toward positive values. The magnetic behavior of all these framework materials has been explained by the mechanoelastic model, considering different radii for Co and Ni molecules and different interactions between Co-Co sites and Co-Ni sites. The model reproduced the incomplete transition, with the HS residual fraction at 300 K decreasing with increasing Ni concentration, and provided microscopic snapshots of the systems, showing how the existence of impurities prevented the spreading of Co atoms in the HS state.
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Affiliation(s)
- Mousumi Dutta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Shubham Bisht
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Prabir Ghosh
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | | | - Dallas Mann
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | | | - Michael Shatruk
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Pradip Chakraborty
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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3
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Li X, Zhang D, Qian Y, Liu W, Mathonière C, Clérac R, Bao X. Chemical Manipulation of the Spin-Crossover Dynamics through Judicious Metal-Ion Dilution. J Am Chem Soc 2023; 145:9564-9570. [PMID: 37075226 DOI: 10.1021/jacs.2c13697] [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: 04/21/2023]
Abstract
In 2019, our groups described a unique FeII complex, [Fe(2MeL)(NCBH3)2] (2MeL = N,N'-dimethyl-N,N'-bis(2-pyridylmethyl)-1,2-ethanediamine) possessing a low-spin ground state that is not easily accessible due to the extremely slow dynamics of the high-spin to low-spin phase transition. Herein, we report the successful chemical manipulation of this spin-crossover (SCO) process through controlled metal-ion dilutions. The emergence or suppression of the thermally induced SCO behavior was observed depending on the radius of the metal ion used for the dilution (NiII or ZnII). Reversible photo-switching has been confirmed in all mixed-metal complexes whether the low-spin state is thermally accessible. Remarkably, the dilution with ZnII metal ions stabilizes HS FeII complexes with complete suppression of the thermally induced SCO process without destroying the reversible photoswitchability of the material.
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Affiliation(s)
- Xiang Li
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Dong Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Yuqing Qian
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Wenxuan Liu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Corine Mathonière
- Univ. Bordeaux, CNRS, CRPP, UMR 5031, F-33600 Pessac, France
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, CRPP, UMR 5031, F-33600 Pessac, France
| | - Xin Bao
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
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Abstract
Two isostructural valence tautomeric (VT) complexes with different critical temperatures were prepared and fully investigated through a series of magnetic, structural, spectral, and differential scanning calorimetry evidence. The kinetic effect in the VT complex was observed for the first time through scan-rate-dependent studies and further validated by annealing tests.
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Affiliation(s)
- Xiao-Peng Sun
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zheng Tang
- Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Liangxiang Campus, Beijing Institute of Technology, Beijing 102488, China
| | - Jiajia Li
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zi-Shuo Yao
- Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Liangxiang Campus, Beijing Institute of Technology, Beijing 102488, China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Jun Tao
- Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Liangxiang Campus, Beijing Institute of Technology, Beijing 102488, China
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Chakraborty P, Sy M, Fourati H, Delgado T, Dutta M, Das C, Besnard C, Hauser A, Enachescu C, Boukheddaden K. Optical microscopy imaging of the thermally-induced spin transition and isothermal multi-stepped relaxation in a low-spin stabilized spin-crossover material. Phys Chem Chem Phys 2022; 24:982-994. [PMID: 34918013 DOI: 10.1039/d1cp04321h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The thermal spin transition and the photo-induced high-spin → low-spin relaxation of the prototypical [Fe(ptz)6](BF4)2 spin-crossover compound (ptz = 1-propyltetrazole) diluted in the isostructural ruthenium host lattice [Ru(ptz)6](BF4)2, which stabilizes the Fe(II) low-spin state, have been investigated. We demonstrate the presence of a crystallographic phase transition around 145 K (i.e. from the high-temperature ordered high-spin phase to a low-temperature disordered low-spin phase) upon slow cooling from room temperature. This crystallographic phase transition is decoupled from the thermal spin transition. A supercooled ordered low-spin phase is observed as in the pure Fe(II) analogue upon fast cooling. A similar order-disorder phase transition is also observed for pure [Ru(ptz)6](BF4)2 but at relatively higher temperature (i.e. at around 150 K) without involving any spin transition. For Ru-diluted [Fe(ptz)6]2+, the crystallographic phase transition as well as strong cooperative effects involving various degrees of elastic frustration are at the origin of stepped sigmoidal high-spin → low-spin relaxation curves, which are modelled in the framework of a classical mean field model, considering both the tunnelling and thermally activated regimes. Optical microscopy studies performed on two different single crystals showed the existence of hysteretic thermal transitions with slight domain formation, hardly visible in the static crystal images. This behavior is attributed to the double effect upon Ru dilution, which decreases the cooperative character of the transition and simultaneously reduces the optical contrast between the LS and HS states. Moreover, the transition temperature revealed to be slightly crystal dependent, highlighting the crucial role of the spatial distribution of Ru from one crystal to another, in addition to the well-known effects of crystal shape and size.
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Affiliation(s)
- Pradip Chakraborty
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Mouhamadou Sy
- Université Assane Seck de Ziguinchor, Département de Physique, LCPM, BP 523 Diabir, Ziguinchor 27000, Sénégal
| | - Houcem Fourati
- Université Paris-Saclay, UVSQ, CNRS, GEMAC, 45 Avenue des Etats Unis 78035, Versailles, France.
| | - Teresa Delgado
- Département de Chimie Physique, Université de Genève, 30, Quai Ernest-Ansermet, CH-1211, Genève 4, Switzerland.,Chimie ParisTech-CNRS, IRCP (PSL), 11 rue P. et M. Curie, 75005 Paris, France
| | - Mousumi Dutta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Chinmoy Das
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Céline Besnard
- Laboratoire de Cristallographie, Université de Genève, 24, Quai Ernest-Ansermet, CH-1211, Genève 4, Switzerland
| | - Andreas Hauser
- Département de Chimie Physique, Université de Genève, 30, Quai Ernest-Ansermet, CH-1211, Genève 4, Switzerland
| | | | - Kamel Boukheddaden
- Université Paris-Saclay, UVSQ, CNRS, GEMAC, 45 Avenue des Etats Unis 78035, Versailles, France.
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Książek M, Weselski M, Kusz J, Bronisz R. Single crystal-to-single crystal transformation - from two distinct to three distinct spin crossover centers in 2D coordination polymer [Fe(bbtr) 3](CF 3SO 3) 2. Dalton Trans 2021; 51:958-968. [PMID: 34931210 DOI: 10.1039/d1dt03578a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,4-Di(1,2,3-triazol-1-yl)butane (bbtr) forms a two-dimensional (2D) coordination polymer (1) in a reaction with iron(II) triflate. In the crystal lattice there are two crystallographically unique iron(II) ions surrounded octahedrally by a 1,2,3-triazole ring coordinated through nitrogen atoms N3. Single crystal X-ray diffraction studies revealed that spin crossover for each crystallographically independent iron(II) ion proceeds at a different temperature (T1/2(Fe1) = 201 K; T1/2(Fe2) = 216 K), while the magnetic measurements showed that there is one step, complete thermally induced spin crossover (T1/2 = 205 K). Complex 1 undergoes, with time, single crystal-to-single crystal transformation (SCSC) to the converted system (1c) from the R3̄ to the P63 space group, accompanied by significant changes in the lattice parameter c (a shortening of approximately one-third) and consequently unit cell volume. Structural transformation is associated with rebuilding of the polymeric layer as well as the anion network, which is reflected in the results of Mössbauer studies. In the polymorphic system (1c) there are three crystallographically independent iron(II) ions. The temperature dependence results for magnetic susceptibility indicated complete, one-step spin crossover very similar to that of 1; however, single-crystal X-ray diffraction studies of 1c revealed that spin crossover for each crystallographically independent iron(II) ion occurs in a different manner, revealing three elementary stages (T1/2(Fe1) = 200 K; T1/2(Fe2) = 212 K, T1/2(Fe3) = 214 K).
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Affiliation(s)
- Maria Książek
- Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland.
| | - Marek Weselski
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland.
| | - Joachim Kusz
- Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland.
| | - Robert Bronisz
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland.
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Üngör Ö, Igimbayeva D, Dragulescu-andrasi A, Yergeshbayeva S, Delgado T, Greer SM, Donalson G, Jo M, Erkasov R, Shatruk M. Pyridyl-Thioethers as Capping Ligands for the Design of Heteroleptic Fe(II) Complexes with Spin-Crossover Behavior. Magnetochemistry 2021; 7:134. [DOI: 10.3390/magnetochemistry7100134] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mononuclear heteroleptic complexes [Fe(tpma)(bimz)](ClO4)2 (1a), [Fe(tpma)(bimz)](BF4)2 (1b), [Fe(bpte)(bimz)](ClO4)2 (2a), and [Fe(bpte)(bimz)](BF4)2 (2b) (tpma = tris(2-pyridylmethyl)amine, bpte = S,S′-bis(2-pyridylmethyl)-1,2-thioethane, bimz = 2,2′-biimidazoline) were prepared by reacting the corresponding Fe(II) salts with stoichiometric amounts of the ligands. All complexes exhibit temperature-induced spin crossover (SCO), but the SCO temperature is substantially lower for complexes 1a and 1b as compared to 2a and 2b, indicating the stronger ligand field afforded by the N2S2-coordinating bpte ligand relative to the N4-coordinating tpma. Our findings suggest that ligands with mixed N/S coordination can be employed to discover new SCO complexes and to tune the transition temperature of known SCO compounds by substituting for purely N-coordinating ligands.
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Gakiya-Teruya M, Jiang X, Le D, Üngör Ö, Durrani AJ, Koptur-Palenchar JJ, Jiang J, Jiang T, Meisel MW, Cheng HP, Zhang XG, Zhang XX, Rahman TS, Hebard AF, Shatruk M. Asymmetric Design of Spin-Crossover Complexes to Increase the Volatility for Surface Deposition. J Am Chem Soc 2021; 143:14563-14572. [PMID: 34472348 DOI: 10.1021/jacs.1c04598] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A mononuclear complex [Fe(tBu2qsal)2] has been obtained by a reaction between an Fe(II) precursor salt and a tridentate ligand 2,4-di(tert-butyl)-6-((quinoline-8-ylimino)methyl)phenol (tBu2qsalH) in the presence of triethylamine. The complex exhibits a hysteretic spin transition at 117 K upon cooling and 129 K upon warming, as well as light-induced excited spin-state trapping at lower temperatures. Although the strongly cooperative spin transition suggests substantial intermolecular interactions, the complex is readily sublimable, as evidenced by the growth of its single crystals by sublimation at 573 → 373 K and ∼10-3 mbar. This seemingly antagonistic behavior is explained by the asymmetric coordination environment, in which the tBu substituents and quinoline moieties appear on opposite sides of the complex. As a result, the structure is partitioned in well-defined layers separated by van der Waals interactions between the tBu groups, while the efficient cooperative interactions within the layer are provided by the quinoline-based moieties. The abrupt spin transition is preserved in a 20 nm thin film prepared by sublimation, as evidenced by abrupt and hysteretic changes in the dielectric properties in the temperature range comparable to the one around which the spin transition is observed for the bulk material. The changes in the dielectric response are in excellent agreement with differences in the dielectric tensor of the low-spin and high-spin crystal structures evaluated by density functional theory calculations. The substantially higher volatility of [Fe(tBu2qsal)2], as compared to a similar complex without tBu substituents, suggests that asymmetric molecular shapes offer an efficient design strategy to achieve sublimable complexes with strongly cooperative spin transitions.
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Affiliation(s)
- Miguel Gakiya-Teruya
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Xuanyuan Jiang
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States
| | - Duy Le
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Ökten Üngör
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Abdullah J Durrani
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States
| | | | - Jun Jiang
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States
| | - Tao Jiang
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Mark W Meisel
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States.,National High Magnetic Field Laboratory, University of Florida, Gainesville, Florida 32611, United States
| | - Hai-Ping Cheng
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States
| | - Xiao-Guang Zhang
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States
| | - Xiao-Xiao Zhang
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States
| | - Talat S Rahman
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Arthur F Hebard
- Department of Physics, University of Florida, Gainesville, Florida 32611, United States
| | - Michael Shatruk
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States.,National High Magnetic Field Laboratory, 1800 E Paul Dirac Dr., Tallahassee, Florida 32310, United States
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9
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Hiiuk VM, Ridier K, Gural'skiy IA, Golub AA, Fritsky IO, Molnár G, Nicolazzi W, Bousseksou A. Influence of the ultra-slow nucleation and growth dynamics on the room-temperature hysteresis of spin-crossover single crystals. Chem Phys Lett 2021; 770:138442. [DOI: 10.1016/j.cplett.2021.138442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Romanini M, Wang Y, Gürpinar K, Ornelas G, Lloveras P, Zhang Y, Zheng W, Barrio M, Aznar A, Gràcia-Condal A, Emre B, Atakol O, Popescu C, Zhang H, Long Y, Balicas L, Lluís Tamarit J, Planes A, Shatruk M, Mañosa L. Giant and Reversible Barocaloric Effect in Trinuclear Spin-Crossover Complex Fe 3 (bntrz) 6 (tcnset) 6. Adv Mater 2021; 33:e2008076. [PMID: 33527567 DOI: 10.1002/adma.202008076] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/05/2021] [Indexed: 06/12/2023]
Abstract
A giant barocaloric effect (BCE) in a molecular material Fe3 (bntrz)6 (tcnset)6 (FBT) is reported, where bntrz = 4-(benzyl)-1,2,4-triazole and tcnset = 1,1,3,3-tetracyano-2-thioethylepropenide. The crystal structure of FBT contains a trinuclear transition metal complex that undergoes an abrupt spin-state switching between the state in which all three FeII centers are in the high-spin (S = 2) electronic configuration and the state in which all of them are in the low-spin (S = 0) configuration. Despite the strongly cooperative nature of the spin transition, it proceeds with a negligible hysteresis and a large volumetric change, suggesting that FBT should be a good candidate for producing a large BCE. Powder X-ray diffraction and calorimetry reveal that the material is highly susceptible to applied pressure, as the transition temperature spans the range from 318 at ambient pressure to 383 K at 2.6 kbar. Despite the large shift in the spin-transition temperature, its nonhysteretic character is maintained under applied pressure. Such behavior leads to a remarkably large and reversible BCE, characterized by an isothermal entropy change of 120 J kg-1 K-1 and an adiabatic temperature change of 35 K, which are among the highest reversible values reported for any caloric material thus far.
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Affiliation(s)
- Michela Romanini
- Departament de Física de la Matèria Condensada, Facultat de Física, Martí i Franquès 1, Universitat de Barcelona, Barcelona, Catalonia, 08028, Spain
| | - YiXu Wang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32306, USA
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Kübra Gürpinar
- Department of Chemistry, Faculty of Science, Ankara University, Ankara, 06100, Turkey
| | - Gladys Ornelas
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32306, USA
- G. W. Brackenridge High School, San Antonio, TX, 78210, USA
| | - Pol Lloveras
- Grup de Caracterització de Materials, Departament de Física, EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Eduard Maristany, 10-14, Barcelona, Catalonia, 08019, Spain
| | - Yan Zhang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32306, USA
| | - Wenkai Zheng
- National High Magnetic Field Laboratory, Tallahassee, FL, 32310, USA
| | - Maria Barrio
- Grup de Caracterització de Materials, Departament de Física, EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Eduard Maristany, 10-14, Barcelona, Catalonia, 08019, Spain
| | - Araceli Aznar
- Grup de Caracterització de Materials, Departament de Física, EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Eduard Maristany, 10-14, Barcelona, Catalonia, 08019, Spain
| | - Adrià Gràcia-Condal
- Departament de Física de la Matèria Condensada, Facultat de Física, Martí i Franquès 1, Universitat de Barcelona, Barcelona, Catalonia, 08028, Spain
| | - Baris Emre
- Department of Engineering Physics, Faculty of Engineering, Ankara University, Ankara, 06100, Turkey
| | - Orhan Atakol
- Department of Chemistry, Faculty of Science, Ankara University, Ankara, 06100, Turkey
| | - Catalin Popescu
- CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Catalonia, E-08290, Spain
| | - Hu Zhang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Yi Long
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Luis Balicas
- National High Magnetic Field Laboratory, Tallahassee, FL, 32310, USA
| | - Josep Lluís Tamarit
- Grup de Caracterització de Materials, Departament de Física, EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Eduard Maristany, 10-14, Barcelona, Catalonia, 08019, Spain
| | - Antoni Planes
- Departament de Física de la Matèria Condensada, Facultat de Física, Martí i Franquès 1, Universitat de Barcelona, Barcelona, Catalonia, 08028, Spain
| | - Michael Shatruk
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32306, USA
- National High Magnetic Field Laboratory, Tallahassee, FL, 32310, USA
| | - Lluís Mañosa
- Departament de Física de la Matèria Condensada, Facultat de Física, Martí i Franquès 1, Universitat de Barcelona, Barcelona, Catalonia, 08028, Spain
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11
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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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12
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Abstract
Homochiral and racemic polymorphs show different spin-crossover behaviours due to different intermolecular interactions, and reversible LIESST effects can be realized on homochiral complexes.
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Affiliation(s)
- Ting-Ting Ma
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Liangxiang Campus
- Beijing Institute of Technology
- Beijing 102488
| | - Xiao-Peng Sun
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Liangxiang Campus
- Beijing Institute of Technology
- Beijing 102488
| | - Zi-Shuo Yao
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Liangxiang Campus
- Beijing Institute of Technology
- Beijing 102488
| | - Jun Tao
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Liangxiang Campus
- Beijing Institute of Technology
- Beijing 102488
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13
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Baldé C, Sylla MS, Desplanches C, Chastanet G. High-spin → low-spin relaxation kinetics and metal dilution effects in 1D spin-crossover chain compounds. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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15
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16
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Hrudka JJ, Phan H, Lengyel J, Rogachev AY, Shatruk M. Power of Three: Incremental Increase in the Ligand Field Strength of N-Alkylated 2,2′-Biimidazoles Leads to Spin Crossover in Homoleptic Tris-Chelated Fe(II) Complexes. Inorg Chem 2018; 57:5183-5193. [DOI: 10.1021/acs.inorgchem.8b00223] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jeremy J. Hrudka
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Hoa Phan
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Jeff Lengyel
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Andrey Yu. Rogachev
- Department of Chemistry, Illinois Institute of Technology, 3101 South Dearborn St, Chicago, Illinois 60616, United States
| | - Michael Shatruk
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
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17
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Wang H, Baldé C, Grosjean A, Desplanches C, Guionneau P, Chastanet G. Seven-coordinated iron(ii) spin-crossover molecules: some learning from iron substitution in [FexMn1−x(L222N3O2)(CN)2]·H2O solid solutions. Dalton Trans 2018; 47:14741-14750. [DOI: 10.1039/c8dt02517g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Temperature dependence of (χMT)Fe for [FexMn1−x(L222N3O2)(CN)2]·H2O of the T(TIESST) experiment with x = 1 (in violet ), 0.949 (in blue ), 0.93 (in red ), 0.912 (in green ), 0.892 (in olive ) and 0.853 (in black ■).
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Affiliation(s)
| | - Chérif Baldé
- Laboratoire de Chimie et Physique des Matériaux (LCPM) Université de Ziguinchor
- Bp: 523 Ziguinchor
- Sénégal
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18
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Ridier K, Rat S, Salmon L, Nicolazzi W, Molnár G, Bousseksou A. Scan-rate and vacuum pressure dependence of the nucleation and growth dynamics in a spin-crossover single crystal: the role of latent heat. Phys Chem Chem Phys 2018; 20:9139-9145. [DOI: 10.1039/c7cp08522b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A heat exchange dependence was evidenced on both the hysteresis properties and the switching dynamics of a spin-crossover single crystal.
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Affiliation(s)
- Karl Ridier
- Laboratoire de Chimie de Coordination (LCC-CNRS), Université de Toulouse, UPS, INP
- F-31077 Toulouse
- France
| | - Sylvain Rat
- Laboratoire de Chimie de Coordination (LCC-CNRS), Université de Toulouse, UPS, INP
- F-31077 Toulouse
- France
| | - Lionel Salmon
- Laboratoire de Chimie de Coordination (LCC-CNRS), Université de Toulouse, UPS, INP
- F-31077 Toulouse
- France
| | - William Nicolazzi
- Laboratoire de Chimie de Coordination (LCC-CNRS), Université de Toulouse, UPS, INP
- F-31077 Toulouse
- France
| | - Gábor Molnár
- Laboratoire de Chimie de Coordination (LCC-CNRS), Université de Toulouse, UPS, INP
- F-31077 Toulouse
- France
| | - Azzedine Bousseksou
- Laboratoire de Chimie de Coordination (LCC-CNRS), Université de Toulouse, UPS, INP
- F-31077 Toulouse
- France
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19
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Bridonneau N, Quatremare P, von Bardeleben HJ, Cantin J, Pillet S, Bendeif E, Marvaud V. Direct Evidence of a Photoinduced Electron Transfer in Diluted “Molybdenum‐Copper” Molecular Compounds. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700983] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nathalie Bridonneau
- IPCM‐CNRS‐UMR‐8232 UPMC‐Univ. Paris 6, cc 229 4 place Jussieu 75252 Paris Cedex 05 France
| | - Pierre Quatremare
- IPCM‐CNRS‐UMR‐8232 UPMC‐Univ. Paris 6, cc 229 4 place Jussieu 75252 Paris Cedex 05 France
| | | | - Jean‐Louis Cantin
- INSP‐CNRS‐UMR‐7588 UPMC‐Univ. Paris 6 4 place Jussieu 75252 Paris Cedex 05 France
| | | | | | - Valérie Marvaud
- IPCM‐CNRS‐UMR‐8232 UPMC‐Univ. Paris 6, cc 229 4 place Jussieu 75252 Paris Cedex 05 France
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20
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Halcrow MA, Chastanet G. Spin-crossover and the LIESST effect in [Fe x Co 1‒ x (bpp) 2 ][BF 4 ] 2 (1.00 ≤ x ≤ 0.77). Comparison with bifunctional solid solutions of iron and cobalt spin-crossover centers. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.01.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Ueno T, Ii Y, Fujinami T, Matsumoto N, Iijima S, Sunatsuki Y. Polymorphs of spin-crossover iron(II) complex fac -[Fe II (HL n -Pr ) 3 ]Cl·PF 6 (HL n -Pr = 2-methylimidazol-4-yl-methylideneamino- n -propyl): Assembly structures and scan rate dependent spin-crossover properties with thermal hysteresis. Polyhedron 2017; 136:13-22. [DOI: 10.1016/j.poly.2017.03.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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23
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Sylla MS, Baldé C, Daro N, Desplanches C, Marchivie M, Chastanet G. On the Effect of the Internal Pressure on the Photoinduced Spin‐Crossover Behavior of [Fe
x
M
1–
x
(1,10‐phenanthroline)
2
(NCS)
2
] Solid Solutions (M = Ni
II
, Zn
II
, and Cd
II
). Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700350] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mame Seyni Sylla
- Laboratoire de Chimie et Physique des Matériaux (LCPM) Université Assane Seck de Ziguinchor Bp: 523 Ziguinchor Sénégal
- CNRS Université de Bordeaux, ICMCB 87 avenue du Dr. A. Schweitzer 33608 Pessac France
| | - Chérif Baldé
- Laboratoire de Chimie et Physique des Matériaux (LCPM) Université Assane Seck de Ziguinchor Bp: 523 Ziguinchor Sénégal
| | - Nathalie Daro
- CNRS Université de Bordeaux, ICMCB 87 avenue du Dr. A. Schweitzer 33608 Pessac France
| | - Cédric Desplanches
- CNRS Université de Bordeaux, ICMCB 87 avenue du Dr. A. Schweitzer 33608 Pessac France
| | - Mathieu Marchivie
- CNRS Université de Bordeaux, ICMCB 87 avenue du Dr. A. Schweitzer 33608 Pessac France
| | - Guillaume Chastanet
- CNRS Université de Bordeaux, ICMCB 87 avenue du Dr. A. Schweitzer 33608 Pessac France
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24
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Baldé C, Desplanches C, François Létard J, Chastanet G. Effects of metal dilution on the spin-crossover behavior and light induced bistability of iron(II) in [Fe Ni1−(bpp)2](NCSe)2. Polyhedron 2017; 123:138-44. [DOI: 10.1016/j.poly.2016.08.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Petzold H, Djomgoue P, Hörner G, Heider S, Lochenie C, Weber B, Rüffer T, Schaarschmidt D. Spin state variability in Fe2+ complexes of substituted (2-(pyridin-2-yl)-1,10-phenanthroline) ligands as versatile terpyridine analogues. Dalton Trans 2017; 46:6218-6229. [DOI: 10.1039/c7dt00422b] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [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
Fe2+ spin crossover complexes [Fe(L)2]2+ (L = substituted (pyridin-2-yl)-1,10-phenanthroline) were prepared and SCO properties were investigated in solution and in the solid state by an experiment and in silico.
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Affiliation(s)
- Holm Petzold
- TU Chemnitz
- Institut für Chemie
- Anorganische Chemie
- 09111 Chemnitz
- Germany
| | - Paul Djomgoue
- TU Chemnitz
- Institut für Chemie
- Anorganische Chemie
- 09111 Chemnitz
- Germany
| | | | - Silvio Heider
- TU Chemnitz
- Institut für Chemie
- Anorganische Chemie
- 09111 Chemnitz
- Germany
| | - Charles Lochenie
- Institut de science et d'ingénierie supramoléculaires (ISIS)
- Université de Strasbourg & CNRS
- 67000 Strasbourg
- France
| | - Birgit Weber
- Anorganische Chemie II
- Universität Bayreuth
- 95440 Bayreuth
- Germany
| | - Tobias Rüffer
- TU Chemnitz
- Institut für Chemie
- Anorganische Chemie
- 09111 Chemnitz
- Germany
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26
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Barskaya IY, Veber SL, Suturina EA, Sherin PS, Maryunina KY, Artiukhova NA, Tretyakov EV, Sagdeev RZ, Ovcharenko VI, Gritsan NP, Fedin MV. Spin-state-correlated optical properties of copper(ii)–nitroxide based molecular magnets. Dalton Trans 2017; 46:13108-13117. [DOI: 10.1039/c7dt02719b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pronounced thermochromism of copper(ii)–nitroxide based molecular magnets is explained.
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Affiliation(s)
| | - Sergey L. Veber
- International Tomography Center SB RAS
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
| | | | - Peter S. Sherin
- International Tomography Center SB RAS
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
| | - Kseniya Yu. Maryunina
- Graduate School of Science and Center for Chiral Science
- Hiroshima University
- Higashi-Hiroshima
- Japan
| | | | | | | | | | - Nina P. Gritsan
- Novosibirsk State University
- 630090 Novosibirsk
- Russia
- Institute of Chemical Kinetics and Combustion SB RAS
- 630090 Novosibirsk
| | - Matvey V. Fedin
- International Tomography Center SB RAS
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
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27
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Petzold H, Djomgoue P, Hörner G, Speck JM, Rüffer T, Schaarschmidt D. (1)H NMR spectroscopic elucidation in solution of the kinetics and thermodynamics of spin crossover for an exceptionally robust Fe(2+) complex. Dalton Trans 2016; 45:13798-809. [PMID: 27506162 DOI: 10.1039/c6dt01895e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of Fe(2+) spin crossover (SCO) complexes [Fe(5/6)](2+) employing hexadentate ligands (5/6) with cis/trans-1,2-diamino cyclohexanes (4) as central building blocks were synthesised. The ligands were obtained by reductive amination of 4 with 2,2'-bipyridyl-6-carbaldehyde or 1,10-phenanthroline-2-carbaldehyde 3. The chelating effect and the rigid structure of the ligands 5/6 lead to exceptionally robust Fe(2+) and Zn(2+) complexes conserving their structure even in coordinating solvents like dmso at high temperatures. Their solution behavior was investigated using variable temperature (VT) (1)H NMR spectroscopy and VT Vis spectroscopy. SCO behavior was found for all Fe(2+) complexes in this series centred around and far above room temperature. For the first time we have demonstrated that the thermodynamics as well as kinetics for SCO can be deduced by using VT (1)H NMR spectroscopy. An alternative scheme using a linear correction term C(1) to model chemical shifts for Fe(2+) SCO complexes is presented. The rate constant for the SCO of [Fe(rac-trans-5)](2+) obtained by VT (1)H NMR was validated by Laser Flash Photolysis (LFP), with excellent agreement (1/(kHL + kLH) = 33.7/35.8 ns for NMR/LFP). The solvent dependence of the transition temperature T1/2 and the solvatochromism of complex [Fe(rac-trans-5)](2+) were ascribed to hydrogen bond formation of the secondary amine to the solvent. Enantiomerically pure complexes can be prepared starting with R,R- or S,S-1,2-diaminocyclohexane (R,R-trans-4 or S,S-trans-4). The high robustness of the complexes reduces a possible ligand scrambling and allows preparation of quasiracemic crystals of [Zn(R,R-5)][Fe(S,S-5)](ClO4)4·(CH3CN) composed of a 1 : 1 mixture of the Zn and Fe complexes with inverse chirality.
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Affiliation(s)
- Holm Petzold
- TU Chemnitz, Institut für Chemie, Anorganische Chemie, Straße der Nationen 62, 09111 Chemnitz, Germany.
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28
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Milin E, Patinec V, Triki S, Bendeif EE, Pillet S, Marchivie M, Chastanet G, Boukheddaden K. Elastic Frustration Triggering Photoinduced Hidden Hysteresis and Multistability in a Two-Dimensional Photoswitchable Hofmann-Like Spin-Crossover Metal–Organic Framework. Inorg Chem 2016; 55:11652-11661. [DOI: 10.1021/acs.inorgchem.6b01081] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [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)
- Eric Milin
- Chimie,
Electrochimie Moléculaires, Chimie Analytique, Université de Bretagne Occidentale, UMR CNRS 6521, 6 Avenue Victor Le Gorgeu, CS 93837, 29285 Brest Cedex 3, France
| | - Véronique Patinec
- Chimie,
Electrochimie Moléculaires, Chimie Analytique, Université de Bretagne Occidentale, UMR CNRS 6521, 6 Avenue Victor Le Gorgeu, CS 93837, 29285 Brest Cedex 3, France
| | - Smail Triki
- Chimie,
Electrochimie Moléculaires, Chimie Analytique, Université de Bretagne Occidentale, UMR CNRS 6521, 6 Avenue Victor Le Gorgeu, CS 93837, 29285 Brest Cedex 3, France
| | - El-Eulmi Bendeif
- Institut
Jean Barriol, Université de Lorraine, CRM2, UMR CNRS 7036, B.P. 70239, F-54506 Vandoeuvre-lès-Nancy, France
| | - Sébastien Pillet
- Institut
Jean Barriol, Université de Lorraine, CRM2, UMR CNRS 7036, B.P. 70239, F-54506 Vandoeuvre-lès-Nancy, France
| | - Mathieu Marchivie
- Institut
de Chimie de la Matière Condensée de Bordeaux, Université de Bordeaux, 87 Av. Doc.
A. Schweitzer, F-33608 Pessac, France
| | - Guillaume Chastanet
- Institut
de Chimie de la Matière Condensée de Bordeaux, Université de Bordeaux, 87 Av. Doc.
A. Schweitzer, F-33608 Pessac, France
| | - Kamel Boukheddaden
- GEMaC, Université Paris-Saclay, CNRS, Université de Versailles Saint-Quentin-en-Yvelines, 45 Avenue des Etats-Unis, 78035 Versailles Cedex, France
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29
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Arroyave A, Lennartson A, Dragulescu-Andrasi A, Pedersen KS, Piligkos S, Stoian SA, Greer SM, Pak C, Hietsoi O, Phan H, Hill S, McKenzie CJ, Shatruk M. Spin Crossover in Fe(II) Complexes with N4S2 Coordination. Inorg Chem 2016; 55:5904-13. [PMID: 27280361 DOI: 10.1021/acs.inorgchem.6b00246] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alejandra Arroyave
- Department of Chemistry
and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Anders Lennartson
- Department
of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Alina Dragulescu-Andrasi
- Department of Chemistry
and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Kasper S. Pedersen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen, Denmark
| | - Stergios Piligkos
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen, Denmark
| | - Sebastian A. Stoian
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, United States
| | - Samuel M. Greer
- Department of Chemistry
and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, United States
| | - Chongin Pak
- Department of Chemistry
and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Oleksandr Hietsoi
- Department of Chemistry
and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Hoa Phan
- Department of Chemistry
and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Stephen Hill
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, United States
- Department
of Physics, Florida State University, 315 Keen Building, Tallahassee, Florida 32306, United States
| | - Christine J. McKenzie
- Department
of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Michael Shatruk
- Department of Chemistry
and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
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30
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Miyano K, Nishida T, Ono H, Hamada D, Fujinami T, Matsumoto N, Sunatsuki Y. Synthesis, hydrogen-bonded 1D structure, and abrupt spin transition between high-spin (HS) and an ordered [HS–HS–HS–LS] of a mononuclear iron(III) complex [FeIII(Him)2(4-MeOhapen)]CF3SO3 (Him=imidazole, 4-MeOhapen=N,N′-bis(2-oxy-4-methoxyacetophenylidene)ethylenediamine). Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2015.09.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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31
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32
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Delgado T, Tissot A, Besnard C, Guénée L, Pattison P, Hauser A. Structural Investigation of the High Spin→Low Spin Relaxation Dynamics of the Porous Coordination Network [Fe(pz)Pt(CN)4]⋅2.6 H2O. Chemistry 2015; 21:3664-70. [DOI: 10.1002/chem.201405405] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Indexed: 11/06/2022]
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Calvo Galve N, Coronado E, Giménez-Marqués M, Mínguez Espallargas G. A Mixed-Ligand Approach for Spin-Crossover Modulation in a Linear FeII Coordination Polymer. Inorg Chem 2014; 53:4482-90. [DOI: 10.1021/ic500141v] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Néstor Calvo Galve
- Instituto de Ciencia Molecular (ICMol), Universitat de València, c/Catedrático José Beltrán, 2, 46980 Paterna, Spain
| | - Eugenio Coronado
- Instituto de Ciencia Molecular (ICMol), Universitat de València, c/Catedrático José Beltrán, 2, 46980 Paterna, Spain
| | - Mónica Giménez-Marqués
- Instituto de Ciencia Molecular (ICMol), Universitat de València, c/Catedrático José Beltrán, 2, 46980 Paterna, Spain
| | - Guillermo Mínguez Espallargas
- Instituto de Ciencia Molecular (ICMol), Universitat de València, c/Catedrático José Beltrán, 2, 46980 Paterna, Spain
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Tissot A, Rivière E, Guillot R, Toupet L, Collet E, Boillot ML. Light-induced excited spin state trapping effect on [Fe(mepy)3tren](PF6)2solvated crystals. Dalton Trans 2014; 43:1063-71. [DOI: 10.1039/c3dt52495g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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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Baldé C, Desplanches C, Le Gac F, Guionneau P, Létard JF. The role of iron(ii) dilution in the magnetic and photomagnetic properties of the series [FexZn1−x(bpp)2](NCSe)2. Dalton Trans 2014; 43:7820-9. [DOI: 10.1039/c3dt52964a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [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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Chakraborty P, Enachescu C, Humair A, Egger L, Delgado T, Tissot A, Guénée L, Besnard C, Bronisz R, Hauser A. Light-induced spin-state switching in the mixed crystal series of the 2D coordination network {[Zn1−xFex(bbtr)3](BF4)2}∞: optical spectroscopy and cooperative effects. Dalton Trans 2014; 43:17786-96. [DOI: 10.1039/c4dt01728e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [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
Strong cooperative interactions result in light-induced bistability between the high-spin and the low-spin state.
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Affiliation(s)
- Pradip Chakraborty
- Département de Chimie Physique
- Université de Genève
- 1211 Genève, Switzerland
| | | | - Arnaud Humair
- Département de Chimie Physique
- Université de Genève
- 1211 Genève, Switzerland
| | - Leo Egger
- Département de Chimie Physique
- Université de Genève
- 1211 Genève, Switzerland
| | - Teresa Delgado
- Département de Chimie Physique
- Université de Genève
- 1211 Genève, Switzerland
| | - Antoine Tissot
- Département de Chimie Physique
- Université de Genève
- 1211 Genève, Switzerland
| | - Laure Guénée
- Laboratoire de Crystallographie
- Université de Genève
- 1211 Genève, Switzerland
| | - Céline Besnard
- Laboratoire de Crystallographie
- Université de Genève
- 1211 Genève, Switzerland
| | - Robert Bronisz
- Faculty of Chemistry
- University of Wroclaw
- 50-383 Wroclaw, Poland
| | - Andreas Hauser
- Département de Chimie Physique
- Université de Genève
- 1211 Genève, Switzerland
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Chakraborty P, Pillet S, Bendeif EE, Enachescu C, Bronisz R, Hauser A. Light-Induced Bistability in the 2 D Coordination Network {[Fe(bbtr)3][BF4]2}∞: Wavelength-Selective Addressing of Molecular Spin States. Chemistry 2013; 19:11418-28. [DOI: 10.1002/chem.201301257] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Indexed: 11/10/2022]
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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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Chakraborty P, Enachescu C, Hauser A. Analysis of the Experimental Data for Pure and Diluted [Fe
x
Zn
1–
x
(bbtr)
3
](ClO
4
)
2
Spin‐Crossover Solids in the Framework of a Mechanoelastic Model. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201193] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pradip Chakraborty
- Département de Chimie Physique, Université de Genève, 30, quai Ernest‐Ansermet, 1211 Genève, Switzerland, http://www.unige.ch/sciences/chifi/Hauser/
| | - Cristian Enachescu
- Faculty of Physics, Al. I. Cuza University, 700506 Iasi, Romania, http://www.phys.uaic.ro/cristian‐enachescu/
| | - Andreas Hauser
- Département de Chimie Physique, Université de Genève, 30, quai Ernest‐Ansermet, 1211 Genève, Switzerland, http://www.unige.ch/sciences/chifi/Hauser/
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Affiliation(s)
- Agata Białońska
- Faculty of Chemistry, University of Wrocław, F. Joliot‐Curie 14, 50‐383 Wrocław, Poland
| | - Robert Bronisz
- Faculty of Chemistry, University of Wrocław, F. Joliot‐Curie 14, 50‐383 Wrocław, Poland
| | - Łukasz Baranowski
- Faculty of Chemistry, University of Wrocław, F. Joliot‐Curie 14, 50‐383 Wrocław, Poland
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