1
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Orellana-Silla A, Meneses-Sánchez M, Turo-Cortés R, Muñoz MC, Bartual-Murgui C, Real JA. Symmetry Breaking and Cooperative Spin Crossover in a Hofmann-Type Coordination Polymer Based on Negatively Charged {Fe II(μ 2-[M II(CN) 4]) 2} n2n- Layers (M II = Pd, Pt). Inorg Chem 2023; 62:12783-12792. [PMID: 37526289 PMCID: PMC10428219 DOI: 10.1021/acs.inorgchem.3c01332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Indexed: 08/02/2023]
Abstract
We report herein the synthesis and characterization of two unprecedented isomorphous spin-crossover two-dimensional coordination polymers of the Hofmann-type formulated {FeII(Hdpyan)2(μ2-[MII(CN)4])2}, with MII = Pd, Pt and Hdpyan is the in situ partially protonated form of 2,5-(dipyridin-4-yl)aniline (dpyan). The FeII is axially coordinated by the pyridine ring attached to the 2-position of the aniline ring, while it is equatorially surrounded by four [MII(CN)4]2- planar groups acting as trans μ2-bidentate ligands defining layers, which stack parallel to each other. The other pyridine group of Hdpyan, being protonated, remains peripheral but involved in a strong [MII-C≡N···Hpy+] hydrogen bond between alternate layers. This provokes a nearly 90° rotation of the plane defined by the [MII(CN)4]2- groups, with respect to the average plane defined by the layers, forcing the observed uncommon bridging mode and the accumulation of negative charge around each FeII, which is compensated by the axial [Hdpyan]+ ligands. According to the magnetic and calorimetric data, both compounds undergo a strong cooperative spin transition featuring a 10-12 K wide hysteresis loop centered at 220 (Pt) and 211 K (Pd) accompanied by large entropy variations, 97.4 (Pt) and 102.9 (Pd) J/K mol. The breaking symmetry involving almost 90° rotation of one of the two coordinated pyridines together with the large unit-cell volume change per FeII (ca. 50 Å3), and subsequent release of significantly short interlayer contacts upon the low-spin → high-spin event, accounts for the strong cooperativity.
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Affiliation(s)
- Alejandro Orellana-Silla
- Departamento
de Química Inorgánica, Instituto de Ciencia Molecular
(ICMol), Universidad de Valencia, Paterna, 46980 Valencia, Spain
| | - Manuel Meneses-Sánchez
- Departamento
de Química Inorgánica, Instituto de Ciencia Molecular
(ICMol), Universidad de Valencia, Paterna, 46980 Valencia, Spain
| | - Rubén Turo-Cortés
- Departamento
de Química Inorgánica, Instituto de Ciencia Molecular
(ICMol), Universidad de Valencia, Paterna, 46980 Valencia, Spain
| | - M. Carmen Muñoz
- Departamento
de Fisica Aplicada, Universitat Politècnica
de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Carlos Bartual-Murgui
- Departamento
de Química Inorgánica, Instituto de Ciencia Molecular
(ICMol), Universidad de Valencia, Paterna, 46980 Valencia, Spain
| | - José Antonio Real
- Departamento
de Química Inorgánica, Instituto de Ciencia Molecular
(ICMol), Universidad de Valencia, Paterna, 46980 Valencia, Spain
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2
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Paliwoda D, Vendier L, Nicolazzi W, Molnár G, Bousseksou A. Pressure Tuning of Coupled Structural and Spin State Transitions in the Molecular Complex [Fe(H 2B(pz) 2) 2(phen)]. Inorg Chem 2022; 61:15991-16002. [PMID: 36162137 DOI: 10.1021/acs.inorgchem.2c02286] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The large volume change, which accompanies the molecular spin crossover (SCO) phenomenon in some transition metal complexes, prompts frequently the coupling of the SCO with other instabilities. Understanding the driving mechanism(s) of such coupled phase transitions is not only important for fundamental reasons but also provides scope for the development of multifunctional materials. The general theoretical expectation is that the coupling has elastic origin, and the sequence of transitions can be tuned by an externally applied pressure, but dedicated experiments remain scarce. Here, we used high-pressure and low-temperature single-crystal X-ray diffraction to investigate the high-spin (HS) to low-spin (LS) transitions in the molecular complexes [FeII(H2B(pz)2)2(bipy)] and [FeII(H2B(pz)2)2(phen)]. In the bipyridine complex, the SCO is continuous and isostructural over the whole T, P-range (100-300 K, 0-2 GPa). In the phenanthroline derivative, however, the SCO is concomitant with a symmetry-breaking transition (C2/c to P1̅). Structural analysis reveals that the coupling between the two phenomena can be tuned by external pressure from a virtually simultaneous HSC2/c-LSP1̅ transition to the sequence of HSC2/c-LSC2/c-LSP1̅ transitions. The correlation of spontaneous strain and order parameter behaviors highlights that the "separated" transitions remain still connected via strain coupling, whereas the "simultaneous" transitions are partially split.
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Affiliation(s)
- Damian Paliwoda
- LCC, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, France
| | - Laure Vendier
- LCC, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, France
| | - William Nicolazzi
- LCC, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, France
| | - Gábor Molnár
- LCC, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, France
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3
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Dey B, Chandrasekhar V. Fe II spin crossover complexes containing N 4O 2 donor ligands. Dalton Trans 2022; 51:13995-14021. [PMID: 36040413 DOI: 10.1039/d2dt01967a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spin crossover (SCO) is one of the most studied magnetic bistable phenomena because of its application in the field of multifunctional magnetic materials. FeII complexes in a N6 coordination environment have been the most well-studied in terms of their SCO behaviour. Other coordination environments, notably the N4O2 coordination environment, has also been quite effective in inducing SCO behaviour in the corresponding FeII complexes. This review deals with such systems. The three ligand families that are discussed are: Jager type ligands, hydrazone based ligands and tridentate ligands having salicylaldehyde derivatives. These ligands allow the assembly of both mononuclear and multinuclear complexes that exhibit cooperative spin transitions. Also, FeII complexes obtained from some of these ligands are multifunctional and exhibit a coupling of optical and magnetic properties. Most of the FeII complexes obtained from these families of ligands are charge neutral which allows easy surface deposition. Further, modulation of these ligand families allows a fine tuning of the ligand field strength which results in varying SCO behavior. In addition some of the FeII complexes derived from these ligands exhibit a light induced excited spin state trapping (LIESST) effect. All of the above aspects are reviewed in this review.
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Affiliation(s)
- Bijoy Dey
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad - 500046, Telangana, India.
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad - 500046, Telangana, India. .,Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
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4
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Seredyuk M, Znovjyak K, Valverde-Muñoz FJ, da Silva I, Muñoz MC, Moroz YS, Real JA. 105 K Wide Room Temperature Spin Transition Memory Due to a Supramolecular Latch Mechanism. J Am Chem Soc 2022; 144:14297-14309. [PMID: 35900921 PMCID: PMC9380689 DOI: 10.1021/jacs.2c05417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
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Little is known about the mechanisms behind the bistability
(memory)
of molecular spin transition compounds over broad temperature ranges
(>100 K). To address this point, we report on a new discrete FeII neutral complex [FeIIL2]0 (1) based on a novel asymmetric tridentate ligand 2-(5-(3-methoxy-4H-1,2,4-triazol-3-yl)-6-(1H-pyrazol-1-yl))pyridine
(L). Due to the asymmetric cone-shaped form, in the lattice, the formed
complex molecules stack into a one-dimensional (1D) supramolecular
chain. In the case of the rectangular supramolecular arrangement of
chains in methanolates 1-A and 1-B (both
orthorhombic, Pbcn) differing, respectively, by bent
and extended spatial conformations of the 3-methoxy groups (3MeO),
a moderate cooperativity is observed. In contrast, the hexagonal-like
arrangement of supramolecular chains in polymorph 1-C (monoclinic, P21/c) results in steric coupling of the transforming complex
species with the peripheral flipping 3MeO group. The group acts as
a supramolecular latch, locking the huge geometric distortion of complex 1 and in turn the trigonal distortion of the central FeII ion in the high-spin state, thereby keeping it from the
transition to the low-spin state over a large thermal range. Analysis
of the crystal packing of 1-C reveals significantly changing
patterns of close intermolecular interactions on going between the
phases substantiated by the energy framework analysis. The detected
supramolecular mechanism leads to a record-setting robust 105 K wide
hysteresis spanning the room temperature region and an atypically
large TLIESST relaxation value of 104
K of the photoexcited high-spin state. This work highlights a viable
pathway toward a new generation of cleverly designed molecular memory
materials.
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Affiliation(s)
- Maksym Seredyuk
- Instituto de Ciencia Molecular, Departamento de Química Inorgánica, Universidad de Valencia, 46980 Paterna, Valencia, Spain.,Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601 Kyiv, Ukraine
| | - Kateryna Znovjyak
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601 Kyiv, Ukraine
| | | | - Ivan da Silva
- ISIS Neutron Facility, STFC Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, U.K
| | - M Carmen Muñoz
- Departamento de Fisíca Aplicada, Universitat Politècnica de València, Camino de Vera s/n, E-46022 Valencia, Spain
| | - Yurii S Moroz
- Chemspace Ltd., Chervonotkatska Street 78, 02094 Kyiv, Ukraine.,ChemBio Center, Taras Shevchenko National University of Kyiv, 60, Volodymyrska Street, 01601 Kyiv, Ukraine
| | - José Antonio Real
- Instituto de Ciencia Molecular, Departamento de Química Inorgánica, Universidad de Valencia, 46980 Paterna, Valencia, Spain
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5
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Influence of Cooperative Interactions on the Spin Crossover Phenomenon in Iron(II) Complexes: A Review. THEOR EXP CHEM+ 2022. [DOI: 10.1007/s11237-022-09725-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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6
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Seredyuk M, Znovjyak K, Valverde-Muñoz FJ, Muñoz MC, Fritsky IO, Amirkhanov VM, Real JA. Spin transition and symmetry-breaking in new mononuclear FeII tren-complexes with up to 38 K hysteresis around room temperature. Inorg Chem Front 2022. [DOI: 10.1039/d1qi00941a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New FeII complexes based on the well-known tripodand ligand type undergo abrupt hysteretic spin transition due to the symmetry-breaking in the room temperature region.
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Affiliation(s)
- Maksym Seredyuk
- Departament de Quimica Inorgànica, Institut de Ciencia Molecular (ICMol), Universitat de València, Valencia, Spain
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601, Kyiv, Ukraine
| | - Kateryna Znovjyak
- Departament de Quimica Inorgànica, Institut de Ciencia Molecular (ICMol), Universitat de València, Valencia, Spain
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601, Kyiv, Ukraine
| | | | - M. Carmen Muñoz
- Departamento de Fisica Aplicada, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - Igor O. Fritsky
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601, Kyiv, Ukraine
| | - Volodymyr M. Amirkhanov
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601, Kyiv, Ukraine
| | - Jose A. Real
- Departament de Quimica Inorgànica, Institut de Ciencia Molecular (ICMol), Universitat de València, Valencia, Spain
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7
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Liu S, Zhu Z, Li XL, Tang J. New iron( ii) spin-crossover metallomesogen with long aliphatic chain terminated by a CC bond. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01181b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A new Fe(ii) complex with long aliphatic chains and terminal CC bonds exhibits SCO behavior and liquid-crystalline properties.
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Affiliation(s)
- Shuting Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Zhenhua Zhu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xiao-Lei Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
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8
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Chida M, Takahashi S, Konishi R, Matsumoto T, Nakada A, Wakizaka M, Kosaka W, Miyasaka H, Chang HC. Tunable Synchronicity of Molecular Valence Tautomerism with Macroscopic Solid-Liquid Transition by Molecular Lattice Engineering. Chemistry 2021; 27:16354-16366. [PMID: 34590361 DOI: 10.1002/chem.202103090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Indexed: 11/10/2022]
Abstract
The combination of a cobalt-dioxolene core that exhibits valence tautomerism (VT) with pyridine-3,5-dicarboxylic acid functionalized with chains bearing two, four, or six oxyethylene units led to new complexes ConEGEspy (n = 2, 4, and 6). These complexes commonly form violet crystals of the low-spin (ls)-[CoIII (nEGEspy)2 (3,6-DTBSQ)(3,6-DTBCat)] (ls-[CoIII ], 3,6-DTBSQ = 3,6-di-tert-butyl semiquinonato, 3,6-DTBCat = 3,6-di-tert-butyl catecholato). Interestingly, violet crystals of Co2EGEspy in the ls-[CoIII ] transitioned into a green liquid, accompanied by an almost complete VT shift (94 %) to the high-spin (hs)-[CoII (nEGEspy)2 (3,6-DTBSQ)2 ] (hs-[CoII ]) upon melting. In contrast, violet crystals of Co4EGEspy and Co6EGEspy in the ls-[CoIII ] exhibited partial VT (33 %) and only a 9.3 % VT shift after melting, respectively. These data demonstrate the tunability of the synchronicity of the molecular VT and macroscopic solid-liquid transitions by optimizing the tethered chains, thus establishing a new strategy for coupling bistable molecules with the macroscopic world.
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Affiliation(s)
- Mayumi Chida
- Department of Applied Chemistry Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Satoru Takahashi
- Department of Applied Chemistry Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Ryunosuke Konishi
- Department of Applied Chemistry Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Takeshi Matsumoto
- Department of Applied Chemistry Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Akinobu Nakada
- Department of Applied Chemistry Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, Tokyo, 112-8551, Japan.,Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Masanori Wakizaka
- Department of Applied Chemistry Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Wataru Kosaka
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Department of Chemistry, Graduate School of Science Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Hitoshi Miyasaka
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Department of Chemistry, Graduate School of Science Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Ho-Chol Chang
- Department of Applied Chemistry Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, Tokyo, 112-8551, Japan
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9
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Galadzhun I, Kulmaczewski R, Cespedes O, Halcrow MA. Iron/2,6‐Di(pyrazol‐1‐yl)pyridine Complexes with a Discotic Pattern of Alkyl or Alkynyl Substituents. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Iurii Galadzhun
- School of Chemistry University of Leeds Woodhouse Lane Leeds LS2 9JT UK
| | | | - Oscar Cespedes
- School of Physics and Astronomy University of Leeds EC Stoner Building Leeds LS2 9JT UK
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10
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Guo Y, Rotaru A, Müller-Bunz H, Morgan GG, Zhang S, Xue S, Garcia Y. Auxiliary alkyl chain modulated spin crossover behaviour of [Fe(H 2Bpz 2) 2(C n-bipy)] complexes. Dalton Trans 2021; 50:12835-12842. [PMID: 34309614 DOI: 10.1039/d1dt01787j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three new alkyl chain substituted complexes [Fe(H2Bpz2)2(Cn-bipy)] (pz = pyrazolyl, Cn-bipy = bipyridine alkyl chain diester, n = 3 (3), 4 (4) and 5 (5)) show versatile spin state switching behaviour with different "tail" lengths as revealed by structural and magnetic analyses. The most striking phenomenon is observed for 5 which undergoes an abrupt spin transition accompanied by thermal hysteresis of ca. 10 K, which is attributed to crystal packing effects derived from the competition between ππ and C-HO interactions. Interestingly, each of the complexes exhibits similar gradual and complete spin crossover in methanol solution with a transition temperature around 249 K, as deduced from temperature-dependent UV-vis spectroscopy. This highlights the differences between the solid state (ligand field; crystal packing) and solution (ligand field; solvation) effects on spin crossover. This work demonstrates that the length of the complex's alkyl chain substituents on the complex can have a large impact on the transition temperature and profile of solid state spin crossover, offering a potential path to the fabrication of soft matter spin crossover materials.
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Affiliation(s)
- Yunnan Guo
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis (IMCN/MOST), Université catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
| | - Aurelian Rotaru
- Department of Electrical Engineering and Computer Science & MANSiD Research Center, "Stefan cel Mare" University, University Street, 13, Suceava 720229, Romania
| | - Helge Müller-Bunz
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Grace G Morgan
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Shishen Zhang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Shufang Xue
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis (IMCN/MOST), Université catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis (IMCN/MOST), Université catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
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11
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Gebretsadik T, Yang Q, Wu J, Tang J. Hydrazone based spin crossover complexes: Behind the extra flexibility of the hydrazone moiety to switch the spin state. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213666] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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12
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Schönfeld S, Hörner G, Heinemann FW, Hofmann A, Marschall R, Weber B. Spin States of 1D Iron(II) Coordination Polymers with Redox Active TTF(py)
2
as Bridging Ligand. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000286] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sophie Schönfeld
- Inorganic Chemistry IV University of Bayreuth Universitätsstraße 30 95448 Bayreuth Germany
| | - Gerald Hörner
- Inorganic Chemistry IV University of Bayreuth Universitätsstraße 30 95448 Bayreuth Germany
| | - Frank W. Heinemann
- Department Chemie und Pharmazie Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Anja Hofmann
- Physical Chemistry III University of Bayreuth Universitätsstraße 30 95448 Bayreuth Germany
| | - Roland Marschall
- Physical Chemistry III University of Bayreuth Universitätsstraße 30 95448 Bayreuth Germany
| | - Birgit Weber
- Inorganic Chemistry IV University of Bayreuth Universitätsstraße 30 95448 Bayreuth Germany
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13
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Galadzhun I, Kulmaczewski R, Shahid N, Cespedes O, Howard MJ, Halcrow MA. The flexibility of long chain substituents influences spin-crossover in isomorphous lipid bilayer crystals. Chem Commun (Camb) 2021; 57:4039-4042. [DOI: 10.1039/d1cc01073e] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
These two compounds are isomorphous but show different spin-state behaviour on cooling. This may be influenced by the packing of alkyl vs. alkynyl chains in the solid state.
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Affiliation(s)
| | | | - Namrah Shahid
- School of Chemistry
- University of Leeds
- Woodhouse Lane
- Leeds
- UK
| | - Oscar Cespedes
- School of Physics and Astronomy
- University of Leeds
- Leeds LS2 9JT
- UK
| | - Mark J. Howard
- School of Chemistry
- University of Leeds
- Woodhouse Lane
- Leeds
- UK
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14
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Valverde-Muñoz FJ, Seredyuk M, Muñoz MC, Molnár G, Bibik YS, Real JA. Thermochromic Meltable Materials with Reverse Spin Transition Controlled by Chemical Design. Angew Chem Int Ed Engl 2020; 59:18632-18638. [PMID: 32666596 DOI: 10.1002/anie.202006453] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Indexed: 01/01/2023]
Abstract
We report a series of meltable FeII complexes, which, depending on the length of aliphatic chains, display abrupt forward low-spin to high-spin transition or unprecedented melting-triggered reverse high-spin to low-spin transition on temperature rise. The reverse spin transition is perfectly reproducible on thermal cycling and the obtained materials are easily processable in the form of thin film owing to their soft-matter nature. We found that the discovered approach represents a potentially generalizable new avenue to control both the location in temperature and the direction of the spin transition in meltable compounds.
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Affiliation(s)
| | - Maksym Seredyuk
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, 46980 Paterna, Valencia, Spain.,National Taras Shevchenko University, Department of Chemistry, Volodymyrska Str. 64, Kyiv, 01601, Ukraine
| | - M Carmen Muñoz
- Departamento de Física Aplicada, Universitat Politècnica de València, 46022, Valencia, Spain
| | - Gábor Molnár
- LCC, CNRS &, Université de Toulouse (UPS, INP), 205 route de Narbonne, 31077, Toulouse, France
| | - Yurii S Bibik
- National Taras Shevchenko University, Department of Chemistry, Volodymyrska Str. 64, Kyiv, 01601, Ukraine.,UkrSyntez Ltd., 67 Chervonotkatska Str., 02094, Kyiv, Ukraine
| | - José Antonio Real
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, 46980 Paterna, Valencia, Spain
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15
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Valverde‐Muñoz F, Seredyuk M, Muñoz MC, Molnár G, Bibik YS, Real JA. Thermochromic Meltable Materials with Reverse Spin Transition Controlled by Chemical Design. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006453] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Maksym Seredyuk
- Instituto de Ciencia Molecular (ICMol) Universidad de Valencia 46980 Paterna Valencia Spain
- National Taras Shevchenko University Department of Chemistry Volodymyrska Str. 64 Kyiv 01601 Ukraine
| | - M. Carmen Muñoz
- Departamento de Física Aplicada Universitat Politècnica de València 46022 Valencia Spain
| | - Gábor Molnár
- LCC, CNRS & Université de Toulouse (UPS, INP) 205 route de Narbonne 31077 Toulouse France
| | - Yurii S. Bibik
- National Taras Shevchenko University Department of Chemistry Volodymyrska Str. 64 Kyiv 01601 Ukraine
- UkrSyntez Ltd. 67 Chervonotkatska Str. 02094 Kyiv Ukraine
| | - José Antonio Real
- Instituto de Ciencia Molecular (ICMol) Universidad de Valencia 46980 Paterna Valencia Spain
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16
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Wen W, Meng Y, Jiao C, Liu Q, Zhu H, Li Y, Oshio H, Liu T. A Mixed‐Valence {Fe
13
} Cluster Exhibiting Metal‐to‐Metal Charge‐Transfer‐Switched Spin Crossover. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wen Wen
- State Key Laboratory of Fine ChemicalsDalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Yin‐Shan Meng
- State Key Laboratory of Fine ChemicalsDalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Cheng‐Qi Jiao
- State Key Laboratory of Fine ChemicalsDalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Qiang Liu
- State Key Laboratory of Fine ChemicalsDalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Hai‐Lang Zhu
- State Key Laboratory of Fine ChemicalsDalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Ya‐Ming Li
- State Key Laboratory of Fine ChemicalsDalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Hiroki Oshio
- State Key Laboratory of Fine ChemicalsDalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Tao Liu
- State Key Laboratory of Fine ChemicalsDalian University of Technology 2 Linggong Rd. 116024 Dalian China
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17
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Wen W, Meng Y, Jiao C, Liu Q, Zhu H, Li Y, Oshio H, Liu T. A Mixed‐Valence {Fe
13
} Cluster Exhibiting Metal‐to‐Metal Charge‐Transfer‐Switched Spin Crossover. Angew Chem Int Ed Engl 2020; 59:16393-16397. [DOI: 10.1002/anie.202005998] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Wen Wen
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Yin‐Shan Meng
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Cheng‐Qi Jiao
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Qiang Liu
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Hai‐Lang Zhu
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Ya‐Ming Li
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Hiroki Oshio
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
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18
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Kashiro A, Kohno W, Ishida T. Odd–Even Effect on the Spin-Crossover Temperature in Iron(II) Complex Series Involving an Alkylated or Acyloxylated Tripodal Ligand. Inorg Chem 2020; 59:10163-10171. [DOI: 10.1021/acs.inorgchem.0c01296] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Atsushi Kashiro
- Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
| | - Wakana Kohno
- Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
| | - Takayuki Ishida
- Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
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19
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Qiu YR, Cui L, Cai PY, Yu F, Kurmoo M, Leong CF, D'Alessandro DM, Zuo JL. Enhanced dielectricity coupled to spin-crossover in a one-dimensional polymer iron(ii) incorporating tetrathiafulvalene. Chem Sci 2020; 11:6229-6235. [PMID: 32953018 PMCID: PMC7480181 DOI: 10.1039/d0sc02388d] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/27/2020] [Indexed: 11/21/2022] Open
Abstract
A concerted bending–flattening motion of the redox-active TTF within constructed one-dimensional FeII–TTF–Schiff-base chain with bridging 4,4′-bpy enhances the dielectric constant coupled to its spin-crossover transition above room temperature.
In designing multifunctional materials for potential switches that can be used as memory devices, the high-spin (HS) to low-spin (LS) crossover (SCO) one-dimensional polymer, [FeII(L)(4,4′-bpy)]n, was constructed from a designed redox-active tetrathiafulvalene (TTF) functionalized Schiff-base and the ditopic linker 4,4′-bipyridine (bpy). It exhibits an 8 K hysteretic SCO centred at T1/2 = 325 K which is coupled to changes in its dielectric constant. The crystal structures above and below the transition temperature reveal similar parallel linear ···Fe–bpy–Fe–bpy··· chains displaying expansion of the FeII octahedron in the HS state. Density functional theory (DFT) calculations reveal a concerted electronic charge and spin change represented by the Mülliken charge of the Fe and the magnitude and direction of the dipole moment which substantiate the experimental observations.
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Affiliation(s)
- Ya-Ru Qiu
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210023 , P. R. China .
| | - Long Cui
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210023 , P. R. China .
| | - Pei-Yu Cai
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210023 , P. R. China .
| | - Fei Yu
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210023 , P. R. China . .,School of Chemistry and Materials Science , Nanjing University of Information Science and Technology , Nanjing , 210044 , P. R. China
| | - Mohamedally Kurmoo
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210023 , P. R. China . .,Institut de Chimie de Strasbourg , CNRS-UMR7177 , Université de Strasbourg , 4 rue Blaise Pascal , Strasbourg 67000 , France .
| | - Chanel F Leong
- School of Chemistry , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Deanna M D'Alessandro
- School of Chemistry , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Jing-Lin Zuo
- State Key Laboratory of Coordination Chemistry , School of Chemistry and Chemical Engineering , Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210023 , P. R. China .
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20
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Kurz H, Sander J, Weber B. Influence of CF
3
Substituents on the Spin Crossover Behavior of Iron(II) Coordination Polymers with Schiff Base‐like Ligands. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900354] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hannah Kurz
- Department of Chemistry University of Bayreuth Universitätsstraße 30, NWI 95447 Bayreuth Germany
| | - Joan Sander
- Department of Chemistry University of Bayreuth Universitätsstraße 30, NWI 95447 Bayreuth Germany
| | - Birgit Weber
- Department of Chemistry University of Bayreuth Universitätsstraße 30, NWI 95447 Bayreuth Germany
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21
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Znovjyak K, Fritsky IO, Sliva TY, Amirkhanov VM, Seredyuk M. Crystal structure of the mixed methanol and ethanol solvate of bis-{3,4,5-trimeth-oxy- N'-[1-(pyridin-2-yl)ethyl-idene]benzohydrazidato}zinc(II). Acta Crystallogr E Crystallogr Commun 2020; 76:303-308. [PMID: 32148865 PMCID: PMC7057386 DOI: 10.1107/s2056989020000857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 01/22/2020] [Indexed: 11/10/2022]
Abstract
The unit cell of the title compound, [Zn(C17H18N3O4)2]·CH4O·C2H6O, contains two complex mol-ecules related by an inversion centre, plus one methanol and one ethanol solvent molecule per complex molecule. In each complex, two deprotonated pyridine aroylhydrazone ligands {3,4,5-trimeth-oxy-N'-[1-(pyridin-2-yl)ethyl-idene]benzohydrazide} coordinate to the ZnII ion through the N atoms of the pyridine group and the ketamine, and, additionally, through the O atom of the enolate group. In the crystal, dimers are formed by π-π inter-actions between the planar ligand moieties, which are further connected by C⋯O and C⋯C inter-actions. The inter-molecular inter-actions were investigated using Hirshfeld surface analysis and two-dimensional fingerprint plots, revealing that the most important contributions for the crystal packing are from H⋯H (44.8%), H⋯C/C⋯H (22.2%), H⋯O/O⋯H (18.7%) and C⋯C (3.9%) inter-actions.
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Affiliation(s)
- Kateryna Znovjyak
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv 01601, Ukraine
- UkrOrgSyntez Ltd, Chervonotkatska Street 67, Kyiv 02094, Ukraine
| | - Igor O. Fritsky
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv 01601, Ukraine
- UkrOrgSyntez Ltd, Chervonotkatska Street 67, Kyiv 02094, Ukraine
| | - Tatiana Y. Sliva
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv 01601, Ukraine
| | - Vladimir M. Amirkhanov
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv 01601, Ukraine
| | - Maksym Seredyuk
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv 01601, Ukraine
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22
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Dankhoff K, Lochenie C, Weber B. Iron(II) Spin Crossover Complexes with 4,4'-Dipyridylethyne-Crystal Structures and Spin Crossover with Hysteresis. Molecules 2020; 25:molecules25030581. [PMID: 32013168 PMCID: PMC7037042 DOI: 10.3390/molecules25030581] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/22/2020] [Accepted: 01/27/2020] [Indexed: 11/29/2022] Open
Abstract
Three new iron(II) 1D coordination polymers with cooperative spin crossover behavior showing thermal hysteresis loops were synthesized using N2O2 Schiff base-like equatorial ligands and 4,4′-dipyridylethyne as a bridging, rigid axial linker. One of those iron(II) 1D coordination polymers showed a 73 K wide hysteresis below room temperature, which, upon solvent loss, decreased to a still remarkable 30 K wide hysteresis. Single crystal X-ray structures of two iron(II) coordination polymers and T-dependent powder XRD patterns are discussed to obtain insight into the structure property relationship of those materials.
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23
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Nakanishi T, Hori Y, Sato H, Wu SQ, Okazawa A, Kojima N, Yamamoto T, Einaga Y, Hayami S, Horie Y, Okajima H, Sakamoto A, Shiota Y, Yoshizawa K, Sato O. Observation of Proton Transfer Coupled Spin Transition and Trapping of Photoinduced Metastable Proton Transfer State in an Fe(II) Complex. J Am Chem Soc 2019; 141:14384-14393. [PMID: 31422661 DOI: 10.1021/jacs.9b07204] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
An important technique to realize novel electron- and/or proton-based functionalities is to use a proton-electron coupling mechanism. When either a proton or electron is excited, the other one is modulated, producing synergistic functions. However, although compounds with proton-coupled electron transfer have been synthesized, crystalline molecular compounds that exhibit proton-transfer-coupled spin-transition (PCST) behavior have not been reported. Here, we report the first example of a PCST Fe(II) complex, wherein the proton lies on the N of hydrazone and pyridine moieties in the ligand at high-spin and low-spin Fe(II), respectively. When the Fe(II) complex is irradiated with light, intramolecular proton transfer occurs from pyridine to hydrazone in conjunction with the photoinduced spin transition via the PCST mechanism. Because the light-induced excited high-spin state is trapped at low temperatures in the Fe(II) complex-a phenomenon known as the light-induced excited-spin-state trapping effect-the light-induced proton-transfer state, wherein the proton lies on the N of hydrazone, is also trapped as a metastable state. The proton transfer was accomplished within 50 ps at 190 K. The bistable nature of the proton position, where the position can be switched by light irradiation, is useful for modulating proton-based functionalities in molecular devices.
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Affiliation(s)
- Takumi Nakanishi
- Institute for Materials Chemistry and Engineering & IRCCS , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Yuta Hori
- Institute for Materials Chemistry and Engineering & IRCCS , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan.,Center for Computational Sciences , University of Tsukuba , Tsukuba 305-8577 , Japan
| | - Hiroyasu Sato
- Rigaku Corporation , 3-9-12 Matsubaracho , Akishima , Tokyo 196-8666 , Japan
| | - Shu-Qi Wu
- Institute for Materials Chemistry and Engineering & IRCCS , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Atsushi Okazawa
- Department of Basic Science, Graduation School of Arts and Sciences , The University of Tokyo , 3-8-1 Komaba , Meguro-ku , Tokyo 153-8902 , Japan
| | - Norimichi Kojima
- Toyota Physical and Chemical Research Institute , Yokomichi, Nagakute , Aichi 480-1192 , Japan
| | - Takashi Yamamoto
- Department of Chemistry, Faculty of Science and Technology , Keio University , 3-14-1 Hiyoshi, Kohoku-ku , Yokohama , Kanagawa 223-8522 , Japan
| | - Yasuaki Einaga
- Department of Chemistry, Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1 Kurokami, Chuo-ku , Kumamoto 860-8555 , Japan
| | - Shinya Hayami
- Department of Chemistry, Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1 Kurokami, Chuo-ku , Kumamoto 860-8555 , Japan.,Institute of Pulsed Power Science (IPPS) , Kumamoto University , 2-39-1 Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Yusuke Horie
- Graduate School of Science and Engineering , Aoyama Gakuin University , 5-10-1 Fuchinobe, Chuo-ku , Sagamihara , Kanagawa 252-5258 , Japan
| | - Hajime Okajima
- Graduate School of Science and Engineering , Aoyama Gakuin University , 5-10-1 Fuchinobe, Chuo-ku , Sagamihara , Kanagawa 252-5258 , Japan
| | - Akira Sakamoto
- Graduate School of Science and Engineering , Aoyama Gakuin University , 5-10-1 Fuchinobe, Chuo-ku , Sagamihara , Kanagawa 252-5258 , Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering & IRCCS , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering & IRCCS , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering & IRCCS , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
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24
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Valverde-Muñoz FJ, Seredyuk M, Meneses-Sánchez M, Muñoz MC, Bartual-Murgui C, Real JA. Discrimination between two memory channels by molecular alloying in a doubly bistable spin crossover material. Chem Sci 2019; 10:3807-3816. [PMID: 31015922 PMCID: PMC6457193 DOI: 10.1039/c8sc05256e] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 02/20/2019] [Indexed: 11/21/2022] Open
Abstract
A multistable spin crossover (SCO) molecular alloy system [Fe1-x M x (nBu-im)3(tren)](P1-y As y F6)2 (M = ZnII, NiII; (nBu-im)3(tren) = tris(n-butyl-imidazol(2-ethylamino))amine) has been synthesized and characterized. By controlling the composition of this isomorphous series, two cooperative thermally induced SCO events featuring distinct critical temperatures (T c) and hysteresis widths (ΔT c, memory) can be selected at will. The pristine derivative 100As (x = 0, y = 1) displays a strong cooperative two-step SCO and two reversible structural phase transitions (PTs). The low temperature PTLT and the SCO occur synchronously involving conformational changes of the ligand's n-butyl arms and two different arrangements of the AsF6 - anions [T1c = 174 K (ΔT1c = 17 K), T2c = 191 K (ΔT2c = 23 K) (scan rate 2 K min-1)]. The high-temperature PTHT takes place in the high-spin state domain and essentially involves rearrangement of the AsF6 - anions [TPTc = 275 K (ΔTPTc = 16 K)]. This behavior strongly contrasts with that of the homologous 100P [x = 0, y = 0] derivative where two separate cooperative one-step SCO can be selected by controlling the kinetics of the coupled PTLT at ambient pressure: (i) one at low temperatures, T c = 122 K (ΔT c = 9 K), for temperature scan rates (>1 K min-1) (memory channel A) where the structural modifications associated with PTLS are inhibited; (ii) the other centered at T c = 155 K (ΔT c = 41 K) for slower temperature scan rates ≤0.1 K min-1 (memory channel B). These two SCO regimes of the 100P derivative transform reversibly into the two-step SCO of 100As upon application of hydrostatic pressure (ca. 0.1 GPa) denoting the subtle effect of internal chemical pressure on the SCO behavior. Precise control of AsF6 - ↔ PF6 - substitution, and hence of the PTLT kinetics, selectively selects the memory channel B of 100P when x = 0 and y ≈ 0.7. Meanwhile, substitution of FeII with ZnII or NiII [x ≈ 0.2, y = 0] favors the low temperature memory channel A at any scan rate. This intriguing interplay between PT, SCO and isomorphous substitution was monitored by single crystal and powder X-ray diffractometries, and magnetic and calorimetric measurements.
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Affiliation(s)
| | - Maksym Seredyuk
- Departament de Química Inorgànica , Institut de Ciència Molecular (ICMol) , Universitat de València , Valencia , Spain .
- On leave from Department of Chemistry , Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Street , 01601 , Kyiv , Ukraine . ;
| | - Manuel Meneses-Sánchez
- Departament de Química Inorgànica , Institut de Ciència Molecular (ICMol) , Universitat de València , Valencia , Spain .
| | - M Carmen Muñoz
- Departament de Física Aplicada , Universitat Politècnica de València , Camino de Vera s/n , E-46022 , Valencia , Spain
| | - Carlos Bartual-Murgui
- Departament de Química Inorgànica , Institut de Ciència Molecular (ICMol) , Universitat de València , Valencia , Spain .
| | - José A Real
- Departament de Química Inorgànica , Institut de Ciència Molecular (ICMol) , Universitat de València , Valencia , Spain .
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25
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Weihermüller J, Schlamp S, Dittrich B, Weber B. Kinetic Trapping Effects in Amphiphilic Iron(II) Spin Crossover Compounds. Inorg Chem 2019; 58:1278-1289. [DOI: 10.1021/acs.inorgchem.8b02763] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | - Stephan Schlamp
- Department of Chemistry, University of Bayreuth, 95440 Bayreuth, Germany
| | - Birger Dittrich
- Anorganische Chemie und Strukturchemie II, Heinrich-Heine University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Birgit Weber
- Department of Chemistry, University of Bayreuth, 95440 Bayreuth, Germany
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26
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Chen XQ, Cai YD, Jiang W, Peng G, Fang JK, Liu JL, Tong ML, Bao X. A Multi-Stimuli-Responsive Fe(II) SCO Complex Based on an Acylhydrazone Ligand. Inorg Chem 2019; 58:999-1002. [PMID: 30618249 DOI: 10.1021/acs.inorgchem.8b02922] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An Fe(II) SCO complex based on an acylhydrazone ligand with an amino functional group has been prepared. The complex is able to dissociate and regather upon protonation and deprotonation, in both solid state and solution, accompanied by spin state switching, marked change of color, and distinct solubility in water. Moreover, the complex shows distinct magnetic responses toward formaldehyde and protic and nonprotic solvents, as a result of the different affinity of the amino functional site with those chemicals.
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Affiliation(s)
- Xiu-Qin Chen
- School of Chemical Engineering , Nanjing University of Science and Technology , 210094 Nanjing , P. R. China
| | - You-De Cai
- School of Chemical Engineering , Nanjing University of Science and Technology , 210094 Nanjing , P. R. China
| | - Wei Jiang
- School of Chemical Engineering , Nanjing University of Science and Technology , 210094 Nanjing , P. R. China
| | - Guo Peng
- Herbert Gleiter Institute of Nanoscience , Nanjing University of Science and Technology , 210094 Nanjing , P. R. China
| | - Jing-Kun Fang
- School of Chemical Engineering , Nanjing University of Science and Technology , 210094 Nanjing , P. R. China
| | - Jun-Liang Liu
- School of Chemistry , Sun Yat-Sen University , 510275 Guangzhou , P. R. China
| | - Ming-Liang Tong
- School of Chemistry , Sun Yat-Sen University , 510275 Guangzhou , P. R. China
| | - Xin Bao
- School of Chemical Engineering , Nanjing University of Science and Technology , 210094 Nanjing , P. R. China
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27
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Yuan J, Liu MJ, Wu SQ, Zhu X, Zhang N, Sato O, Kou HZ. Substituent effects on the fluorescent spin-crossover Fe(ii) complexes of rhodamine 6G hydrazones. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00111e] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The magnetic properties of Fe(ii) pyridine-2-carbaldehyde rhodamine 6G hydrazone complexes are modulated by the substituents. The desolvated complex displays the correlation between the spin crossover and the fluorescence.
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Affiliation(s)
- Juan Yuan
- School of Pharmacy
- Henan University of Chinese Medicine
- Zhengzhou 450046
- P. R. China
- Department of Chemistry
| | - Mei-Jiao Liu
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Shu-Qi Wu
- Institute for Materials Chemistry and Engineering
- Kyushu University
- 819-0395 Fukuoka
- Japan
| | - Xin Zhu
- School of Pharmacy
- Henan University of Chinese Medicine
- Zhengzhou 450046
- P. R. China
| | - Nan Zhang
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering
- Kyushu University
- 819-0395 Fukuoka
- Japan
| | - Hui-Zhong Kou
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
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28
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Chen XR, Liu SX, Ren Q, Tian ZF, Huang XC, Wang L, Ren XM. Wide Magnetic Thermal Memory Effect (∼55 K) Above Room Temperature Coupled to a Structure Phase Transition of Lattice Symmetry Reduction in High-Temperature Phase in an S = 1/2 Spin Chain Molecule Crystal. J Phys Chem B 2018; 122:12428-12435. [PMID: 30514086 DOI: 10.1021/acs.jpcb.8b10492] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
One-dimensional (1D) S = 1/2 Heisenberg antiferromagnetic (AFM) chain system shows frequently a spin-Peierls-type transition owing to strong spin-lattice coupling. From high-temperature phase (HTP) to low-temperature phase (LTP), the spin chain distortion leads to the reduction in lattice symmetry in LTP, called the symmetry breaking (SB) phase transition. Herein, we report the first example of 1D S = 1/2 AFM molecular crystal, [Et3( n-Pr)N][Ni(dmit)2] (Et3( n-Pr)N+ = triethylpropylammonium, dmit2- = 2-thioxo-1,3-dithiole-4,5-dithiolate), which shows a structural phase transition with lattice symmetry increase in LTP, which is contrary to the SB phase transition. Particularly, the structure phase transition leads to magnetically bistable state with TC↑ ≈ 375 K, TC↓ ≈ 320 K, and surprisingly large thermal hysteresis (∼55 K). Additionally, LTP and HTP coexist in a temperature region near TC but not at TC in this 1D spin system. The large hysteresis is related to the huge deformation of anion stack, which needs high activation energy for the structure transformation and magnetic transition between LTP and HTP. This study would not only provide new insight into the relationship of spin-Peierls-type transition and structure phase transition but also offer a roadmap for searching molecular-scale magnetic bistable materials, which are in huge demand in future electronic, magnetic, and photonic technologies.
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Affiliation(s)
- Xuan-Rong Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry & Molecular Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China.,School of Chemistry & Environmental Engineering and Instrumental Analysis Center , Yancheng Teachers University , Yancheng 224051 , P. R. China
| | - Shao-Xian Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry & Molecular Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China
| | - Qiu Ren
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry & Molecular Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China
| | - Zheng-Fang Tian
- Hubei Key Laboratory for Processing and Application of Catalytic Materials , Huanggang Normal University , Huanggang 438000 , P. R. China
| | | | - Lifeng Wang
- School of Chemistry & Environmental Engineering and Instrumental Analysis Center , Yancheng Teachers University , Yancheng 224051 , P. R. China.,Institute for Frontier Materials (IFM) , Deakin University , 75 Pigdons Road, Waurn Ponds , Victoria 3216 , Australia
| | - Xiao-Ming Ren
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry & Molecular Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China
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30
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Shiga T, Sato Y, Tachibana M, Sato H, Matsumoto T, Sagayama H, Kumai R, Murakami Y, Newton GN, Oshio H. Carboxylic Acid Functionalized Spin-Crossover Iron(II) Grids for Tunable Switching and Hybrid Electrode Fabrication. Inorg Chem 2018; 57:14013-14017. [PMID: 30379073 DOI: 10.1021/acs.inorgchem.8b01856] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two carboxyl-substituted iron(II) grids, one protonated, [Fe4(HL)4](BF4)4·4MeCN·AcOEt (1), and the other deprotonated, [Fe4(L)4]·DMSO·EtOH (2), where H2L = 4-{4,5-bis[6-(3,5-dimethylpyrazol-1-yl)pyrid-2-yl]-1 H-imidazol-2-yl}benzoic acid, were synthesized. Single-crystal X-ray structure analyses reveal that both complexes have a tetranuclear [2 × 2] grid structure. 1 formed one-dimensional chains through intermolecular hydrogen bonds between the carboxylic acid units of neighboring grids, while 2 formed two-dimensional layers stabilized by π-π-stacking interactions. 1 showed spin transition between the 3HS-1LS and 1.5HS-2.5LS states around 200 K, while 2 showed spin-crossover between the 4LS and 2LS-2HS states above 300 K. A modified indium-tin oxide (ITO) electrode was fabricated by soaking the ITO in a solution of 1. The resultant electrode showed reversible redox waves attributed to the original redox processes of iron(II)/iron(III).
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Affiliation(s)
- Takuya Shiga
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Yamato Sato
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Minami Tachibana
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Hiroki Sato
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Takuto Matsumoto
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
| | - Hajime Sagayama
- Photon Factory and Condensed Matter Research Center, Institute of Materials Structure Science , High Energy Accelerator Research Organization , Oho 1-1 , Tsukuba , Ibaraki 305-0801 , Japan
| | - Reiji Kumai
- Photon Factory and Condensed Matter Research Center, Institute of Materials Structure Science , High Energy Accelerator Research Organization , Oho 1-1 , Tsukuba , Ibaraki 305-0801 , Japan
| | - Youichi Murakami
- Photon Factory and Condensed Matter Research Center, Institute of Materials Structure Science , High Energy Accelerator Research Organization , Oho 1-1 , Tsukuba , Ibaraki 305-0801 , Japan
| | - Graham N Newton
- GSK Carbon Neutral Laboratories for Sustainable Chemistry , The University of Nottingham , Nottingham NG7 2TU , U.K
| | - Hiroki Oshio
- Graduate School of Pure and Applied Sciences , University of Tsukuba , Tennodai 1-1-1 , Tsukuba , Ibaraki 305-8571 , Japan
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31
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Galadzhun I, Kulmaczewski R, Cespedes O, Yamada M, Yoshinari N, Konno T, Halcrow MA. 2,6-Bis(pyrazol-1-yl)pyridine-4-carboxylate Esters with Alkyl Chain Substituents and Their Iron(II) Complexes. Inorg Chem 2018; 57:13761-13771. [DOI: 10.1021/acs.inorgchem.8b02289] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Iurii Galadzhun
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Rafal Kulmaczewski
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Oscar Cespedes
- School of Physics and Astronomy, University of Leeds, E. C. Stoner Building, Leeds LS2 9JT, U.K
| | - Mihoko Yamada
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Nobuto Yoshinari
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Takumi Konno
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Malcolm A. Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
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32
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Bauer W, Ossiander T, Weber B. Synthesis of iron(II) complexes with asymmetric N2O2 coordinating Schiff base-like ligands and their spin crossover properties. Front Chem Sci Eng 2018. [DOI: 10.1007/s11705-018-1753-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Yuan J, Wu SQ, Liu MJ, Sato O, Kou HZ. Rhodamine 6G-Labeled Pyridyl Aroylhydrazone Fe(II) Complex Exhibiting Synergetic Spin Crossover and Fluorescence. J Am Chem Soc 2018; 140:9426-9433. [DOI: 10.1021/jacs.8b00103] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Juan Yuan
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Shu-Qi Wu
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395 Fukuoka, Japan
| | - Mei-Jiao Liu
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395 Fukuoka, Japan
| | - Hui-Zhong Kou
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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34
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Mikolasek M, Manrique-Juarez MD, Shepherd HJ, Ridier K, Rat S, Shalabaeva V, Bas AC, Collings IE, Mathieu F, Cacheux J, Leichle T, Nicu L, Nicolazzi W, Salmon L, Molnár G, Bousseksou A. Complete Set of Elastic Moduli of a Spin-Crossover Solid: Spin-State Dependence and Mechanical Actuation. J Am Chem Soc 2018; 140:8970-8979. [DOI: 10.1021/jacs.8b05347] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Mirko Mikolasek
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Maria D. Manrique-Juarez
- LCC-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
- LAAS-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
| | - Helena J. Shepherd
- School of Physical Sciences, University of Kent, Canterbury, CT2 7NH, United Kingdom
| | - Karl Ridier
- LCC-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
| | - Sylvain Rat
- LCC-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
| | | | | | - Ines E. Collings
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Fabrice Mathieu
- LAAS-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
| | - Jean Cacheux
- LAAS-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
| | - Thierry Leichle
- LAAS-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
| | - Liviu Nicu
- LAAS-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
| | | | - Lionel Salmon
- LCC-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
| | - Gábor Molnár
- LCC-CNRS, Université de Toulouse, CNRS, 31077 Toulouse, France
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35
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Weselski M, Książek M, Rokosz D, Dreczko A, Kusz J, Bronisz R. Double spin transition in a two dimensional Fe(ii) coordination network. Chem Commun (Camb) 2018; 54:3895-3898. [PMID: 29610797 DOI: 10.1039/c8cc01621f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the two dimensional coordination network [Fe(ebbtr)2(CH3CN)2](ClO4)2·4CH3CN a sequence of LS → HS → LS → HS transitions occurs.
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Affiliation(s)
- Marek Weselski
- Faculty of Chemistry
- University of Wrocław
- Wrocław 50-383
- Poland
| | - Maria Książek
- Institute of Physics
- University of Silesia
- Katowice 40-007
- Poland
| | - Dominika Rokosz
- Faculty of Chemistry
- University of Wrocław
- Wrocław 50-383
- Poland
| | | | - Joachim Kusz
- Institute of Physics
- University of Silesia
- Katowice 40-007
- Poland
| | - Robert Bronisz
- Faculty of Chemistry
- University of Wrocław
- Wrocław 50-383
- Poland
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36
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Shi J, Zhou Y, Xue C, Liu Q, Zhang D. Substitute Group-Tuned Schiff-Base Manganese(III)-Based Cyanide-Bridged Bimetallic Complexes: Synthesis, Crystal Structures and Magnetic Properties. JOURNAL OF CHEMICAL RESEARCH 2018. [DOI: 10.3184/174751918x15161933697826] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The trinuclear cyanide-bridged heterometallic Pd(II)–Mn(III) complexes {[Mn(L1)(H2O)]2[Pd(CN)4]} and {[Mn(L2)(H2O)]2[Pd(CN)4]}·2H2O (L1 = N,N‘-1,2-propylene-bis(3-methoxysalicylideneiminate; L2 = N,N′-1,2-propylene-bis(3-ethoxysalicylideneiminate) were obtained and structurally and magnetically characterised. X-ray diffraction revealed their cyanide-bridged trinuclear core nature with a conformational difference. The magnetic susceptibilities of the two complexes revealed overall weak antiferromagnetic interactions between the adjacent Mn(III) ions.
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Affiliation(s)
- Jingwen Shi
- College of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, P.R. China
| | - Yin Zhou
- College of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, P.R. China
| | - Chongchong Xue
- College of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, P.R. China
| | - Qingyun Liu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, P.R. China
| | - Daopeng Zhang
- College of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, P.R. China
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37
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Rosario-Amorin D, Dechambenoit P, Bentaleb A, Rouzières M, Mathonière C, Clérac R. Multistability at Room Temperature in a Bent-Shaped Spin-Crossover Complex Decorated with Long Alkyl Chains. J Am Chem Soc 2017; 140:98-101. [DOI: 10.1021/jacs.7b11042] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Daniel Rosario-Amorin
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France
- Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
| | - Pierre Dechambenoit
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France
- Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
| | - Ahmed Bentaleb
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France
- Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
| | - Mathieu Rouzières
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France
- Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
| | - Corine Mathonière
- CNRS, ICMCB, UPR 9048, F-33600 Pessac, France
- Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France
| | - Rodolphe Clérac
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France
- Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
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38
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Savchuk MO, Litsis OO, Znovjyak KO, Sliva TY, Kobylinskaya NG, Shishkina SV, Dyakonenko VV, Amirkhanov VM. Transition metal complexes of 2,6-bis(imidazol-2-yl)pyridine and its aliphatic derivative. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Fumanal M, Novoa JJ, Ribas-Arino J. Origin of Bistability in the Butyl-Substituted Spirobiphenalenyl-Based Neutral Radical Material. Chemistry 2017; 23:7772-7784. [DOI: 10.1002/chem.201700946] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Indexed: 01/24/2023]
Affiliation(s)
- Maria Fumanal
- Departament de Química Física and IQTCUB; Facultat de Química; Universitat de Barcelona; Av. Diagonal 645 08028 Barcelona Spain
- Current address: Laboratoire de Chimie Quantique; Institut de Chimie UMR7177; CNRS-Université de Strasbourg; 1 Rue Blaise Pascal BP 296/R8 67007 Strasbourg France
| | - Juan J. Novoa
- Departament de Química Física and IQTCUB; Facultat de Química; Universitat de Barcelona; Av. Diagonal 645 08028 Barcelona Spain
| | - Jordi Ribas-Arino
- Departament de Química Física and IQTCUB; Facultat de Química; Universitat de Barcelona; Av. Diagonal 645 08028 Barcelona Spain
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40
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Molecular magnetism, quo vadis? A historical perspective from a coordination chemist viewpoint☆. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.004] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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41
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Phonsri W, Davies CG, Jameson GNL, Moubaraki B, Ward JS, Kruger PE, Chastanet G, Murray KS. Symmetry breaking above room temperature in an Fe(ii) spin crossover complex with an N4O2 donor set. Chem Commun (Camb) 2017; 53:1374-1377. [DOI: 10.1039/c6cc10040f] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An halogen-substituted salicylaldimine iron(ii) complex shows an abrupt two-step spin transition above room temperature, variable temperature crystallography showing symmetry breaking.
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Affiliation(s)
| | - Casey G. Davies
- Department of Chemistry & MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Otago
- Dunedin
- New Zealand
| | - Guy N. L. Jameson
- Department of Chemistry & MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Otago
- Dunedin
- New Zealand
| | | | - Jas S. Ward
- Department of Chemistry & MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Canterbury
- Christchurch 8041
- New Zealand
| | - Paul E. Kruger
- Department of Chemistry & MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Canterbury
- Christchurch 8041
- New Zealand
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42
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Yuan J, Liu MJ, Liu CM, Kou HZ. Iron(iii) complexes of 2-methyl-6-(pyrimidin-2-yl-hydrazonomethyl)-phenol as spin-crossover molecular materials. Dalton Trans 2017; 46:16562-16569. [DOI: 10.1039/c7dt03233a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Four new mononuclear Fe(iii) complexes are obtained by using 2-methyl-6-(pyrimidin-2-yl-hydrazonomethyl)-phenol. The perchlorate complex displays spin crossover with a hysteresis of 32 K, while the neutral complex exhibits a gradual incomplete spin transition.
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Affiliation(s)
- Juan Yuan
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
- School of Pharmacy
| | - Mei-Jiao Liu
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hui-Zhong Kou
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
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43
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Li GL, Kanegawa S, Yao ZS, Su SQ, Wu SQ, Huang YG, Kang S, Sato O. Influence of Intermolecular Interactions on Valence Tautomeric Behaviors in Two Polymorphic Dinuclear Cobalt Complexes. Chemistry 2016; 22:17130-17135. [PMID: 27629522 DOI: 10.1002/chem.201603817] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Indexed: 11/05/2022]
Abstract
Two polymorphic structures have been well determined in a valence tautomeric (VT) dinuclear cobalt complex. These polymorphs showed distinct thermal- and photomagnetic behavior, and are thus ideal for studying the "pure" intermolecular factors to VT transitions. In polymorph 1A, the VT cations are arranged head-to-waist with their neighbors and exhibit weak π⋅⋅⋅π interactions, resulting in a gradual and incomplete thermal VT transition. In contrast, the cations in polymorph 1B are arranged head-to-tail and exhibit relatively strong π⋅⋅⋅π interactions, leading to an abrupt and complete thermal VT transition with adjustable hysteresis loop at around room temperature. The VT process for both polymorphs can be induced by light, but the light-excited state of 1B⋅2H2 O has a higher thermal relaxation temperature than that of 1A⋅3H2 O.
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Affiliation(s)
- Guo-Ling Li
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395, Fukuoka, Japan
| | - Shinji Kanegawa
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395, Fukuoka, Japan
| | - Zi-Shuo Yao
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395, Fukuoka, Japan
| | - Sheng-Qun Su
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395, Fukuoka, Japan
| | - Shu-Qi Wu
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395, Fukuoka, Japan
| | - You-Gui Huang
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395, Fukuoka, Japan
| | - Soonchul Kang
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395, Fukuoka, Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, 819-0395, Fukuoka, Japan
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44
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Seredyuk M, Znovjyak K, Muñoz MC, Galyametdinov Y, Fritsky IO, Real JA. Imparting hysteretic behavior to spin transition in neutral mononuclear complexes. RSC Adv 2016. [DOI: 10.1039/c6ra05342d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The paper presents an experimental study of spin transition thiocyanate complexes of Fe(ii) with aliphatic substituents with focus on the interaction between spin- and phase-transitions.
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Affiliation(s)
- Maksym Seredyuk
- Taras Shevchenko National University
- Department of Chemistry
- Kyiv 01601
- Ukraine
- Institut de Ciència Molecular (ICMol)
| | - Kateryna Znovjyak
- Taras Shevchenko National University
- Department of Chemistry
- Kyiv 01601
- Ukraine
| | - M. Carmen Muñoz
- Departament de Física Aplicada
- Universitat Politècnica de València
- Valencia
- Spain
| | | | - Igor O. Fritsky
- Taras Shevchenko National University
- Department of Chemistry
- Kyiv 01601
- Ukraine
| | - Jose A. Real
- Institut de Ciència Molecular (ICMol)
- Departament de Química Inorgànica
- Universitat de València
- Valencia
- Spain
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