1
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Kobayashi F, Yoshida A, Gemba M, Takatsu Y, Tadokoro M. Solvent vapour-responsive structural transformations in molecular crystals composed of a luminescent mononuclear aluminium(III) complex. Dalton Trans 2024; 53:11689-11696. [PMID: 38847374 DOI: 10.1039/d4dt00747f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Investigations into the construction of functional molecular crystals and their external stimuli-induced structural transformations represent compelling research topics, particularly for the advancement of sensors and memory devices. However, reports on the development of molecular crystals constructed from discrete mononuclear complex units and exhibiting structural transformations via the adsorption/desorption of guest molecules are scarce. In this study, we synthesised three molecular crystals composed of [Al(sap)(acac)(H2O)]·(solvent) (H2sap = 2-salicylideneaminophenol, acac = acetylacetonate, solvent = Me2CO (Al·Me2CO), MeCN (Al·MeCN), or DMSO (Al·DMSO)), and demonstrated solvent vapour-responsive reversible crystal-to-crystal structural transformations in Al·Me2CO and Al·MeCN. For Al·DMSO, exposure to DMSO vapour led to the formation of DMSO-coordinated compound [Al(sap)(acac)(DMSO)], indicating an irreversible structural transformation. This solvent vapour-responsive system incorporates a luminescent mononuclear aluminium(III) complex (λmax = 539-552 nm, Φem = 0.07-0.27) as the molecular building unit for the porous-like framework. Therefore, we synthesised a new functional molecular material and a potential molecular building unit that facilitates guest fixation through hydrogen-bonding.
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Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Azuki Yoshida
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Misato Gemba
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Yuta Takatsu
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Makoto Tadokoro
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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2
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Wu XR, Wu SQ, Liu ZK, Chen MX, Tao J, Sato O, Kou HZ. Integrating spin-dependent emission and dielectric switching in Fe II catenated metal-organic frameworks. Nat Commun 2024; 15:3961. [PMID: 38729932 PMCID: PMC11087595 DOI: 10.1038/s41467-024-48425-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 04/26/2024] [Indexed: 05/12/2024] Open
Abstract
Mechanically interlocked molecules (MIMs) including famous catenanes show switchable physical properties and attract continuous research interest due to their potential application in molecular devices. The advantages of using spin crossover (SCO) materials here are enormous, allowing for control through diverse stimuli and highly specific functions, and enabling the transfer of the internal dynamics of MIMs from solution to solid state, leading to macroscopic applications. Herein, we report the efficient self-assembly of catenated metal-organic frameworks (termed catena-MOFs) induced by stacking interactions, through the combination of rationally selected flexible and conjugated naphthalene diimide-based bis-pyridyl ligand (BPND), [MI(CN)2]- (M = Ag or Au) and Fe2+ in a one-step strategy. The obtained bimetallic Hofmann-type SCO-MOFs [FeII(BPND){Ag(CN)2}2]·3CHCl3 (1Ag) and [FeII(BPND{Au(CN)2}2]·2CHCl3·2H2O (1Au) possess a unique three-dimensional (3D) catena-MOF constructed from the polycatenation of two-dimensional (2D) layers with hxl topology. Both complexes undergo thermal- and light-induced SCO. Significantly, abnormal increases in the maximum emission intensity and dielectric constant can be detected simultaneously with the switching of spin states. This research opens up SCO-actuated bistable MIMs that afford dual functionality of coupled fluorescence emission and dielectricity.
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Affiliation(s)
- Xue-Ru Wu
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, PR China
| | - Shu-Qi Wu
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
| | - Zhi-Kun Liu
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Liangxiang Campus, Beijing Institute of Technology, 102488, Beijing, PR China
| | - Ming-Xing Chen
- Analytical Instrumentation Center, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, PR China
| | - Jun Tao
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Liangxiang Campus, Beijing Institute of Technology, 102488, Beijing, PR China
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Hui-Zhong Kou
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, PR China.
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3
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Jornet-Mollá V, Rodríguez-Tarrazó MI, Dolz-Lozano MJ, Giménez-Saiz C, Romero FM. Hydrogen-bonded assemblies of iron(II) spin crossover complexes. Dalton Trans 2024; 53:7848-7856. [PMID: 38625687 DOI: 10.1039/d4dt00579a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
The paper reports on the synthesis, crystal structure, thermal and magnetic properties of spin crossover (SCO) salts containing the [Fe(bpp)2]2+ cation (bpp = 2,6-bis(pyrazol-3-yl)pyridine) and different rigid polycarboxylate anions, such as anthracene-9,10-dicarboxylate (ADC), benzene-1,3,5-tricarboxylate (BTC) and biphenyl-4,4'-dicarboxylate (BPDC). Compound [Fe(bpp)2](ADC)·9H2O (1) shows a porous hydrogen-bonded structure with water molecules sitting in the channels. It contains low-spin (LS) Fe2+ cations that undergo crossover to the high-spin (HS) state upon dehydration. Anhydrous 1 remains HS on cooling at low temperatures. A similar magnetic behaviour is obtained for the partially protonated BTC salt [Fe(bpp)2](HBTC)·5H2O (2), showing a spin change concomitant with dehydration to a HS phase that undergoes gradual and partial SCO on cooling, affecting 25% of the Fe2+ cations. Instead, the BPDC salt [Fe(bpp)2](BPDC)·5H2O (3) has a ground HS state in its fully hydrated form.
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Affiliation(s)
- Verónica Jornet-Mollá
- Departament de Química Inorgànica, Universitat de València, C/Dr. Moliner, 50, E-46100 Burjassot, Spain.
| | - Marina I Rodríguez-Tarrazó
- Departament de Química Inorgànica, Universitat de València, C/Dr. Moliner, 50, E-46100 Burjassot, Spain.
| | - Miquel J Dolz-Lozano
- Departament de Química Inorgànica, Universitat de València, C/Dr. Moliner, 50, E-46100 Burjassot, Spain.
| | - Carlos Giménez-Saiz
- Departament de Química Inorgànica, Universitat de València, C/Dr. Moliner, 50, E-46100 Burjassot, Spain.
| | - Francisco M Romero
- Departament de Química Inorgànica, Universitat de València, C/Dr. Moliner, 50, E-46100 Burjassot, Spain.
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4
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Liu ZK, Sun K, Xue JP, Yao ZS, Tao J. Guest water-induced structural transformation and spin-crossover variation of a two-dimensional Hofmann-type compound. Dalton Trans 2024; 53:7522-7526. [PMID: 38597512 DOI: 10.1039/d4dt00435c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
In this paper, we report a two-dimensional (2D) Hofmann-type spin-crossover coordination polymer [FeII(o-NTrz)2PtII(CN)4]·H2O (o-NTrz = 4-(o-nitrobenzyl)imino-1,2,4-triazole). Due to the remarkable configurational flexibility of triazole-based ligand, the porous structure of this compound can be reversibly regulated by the loss of guest water molecules as a consequence of rotation of o-NTrz. The 180° reorientation of the o-nitrobenzyl moiety not only induces a response of gate-closing/opening of the porous framework but also significantly modulates the spin transition temperature. The present investigation highlights the potential of Hofmann-type SCO compounds with flexible ligands in exploring unusual physical and chemical phenomena.
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Affiliation(s)
- Zhi-Kun Liu
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Liangxiang Campus, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
| | - Ke Sun
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Liangxiang Campus, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
| | - Jin-Peng Xue
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Liangxiang Campus, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
| | - 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, People's Republic of China.
| | - 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, People's Republic of China.
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5
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Cheng Y, Chen ZY, Deng YF, Zhang YZ. 3 nm-wide Cyanometallate Fe-Co Tape Exhibiting Single-Chain Magnet Behavior. Inorg Chem 2024; 63:4063-4071. [PMID: 38364201 DOI: 10.1021/acs.inorgchem.3c03531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Treatment of Co(OTf)2·6H2O, Li[(pzTp)FeIII(CN)3], and H3PMo12O40·nH2O in protic solvents afforded two structurally related Fe-Co cyanometallate complexes: [{(pzTp)Fe(CN)3}3Co3(MeOH)10][PMo12O40]·H2O·11MeOH (1, pzTp- = tetra(pyrazolyl)borate) and {[(pzTp)Fe(CN)3]4Co3(MeOH)5(H2O)3}n[HPMo12O40]n·3 nMeOH·6.5nH2O (2). Complex 1 consists of a cyanide-bridged hexanuclear [Fe3Co3] cage, characterized by the fused conjunction of two mutually perpendicular trigonal bipyramids (TBPs, [Fe2Co3] and [Co2Fe3]), while complex 2 showcases an intricate cyanide-bridged Fe-Co tape comprising a central chain backbone of vertex-sharing [Fe2Co3] TBPs alongside peripheral [Fe2Co2] squares. Complex 2 is among the widest one-dimensional coordination assemblies characterized by the single-crystal X-ray diffraction technique. Magnetic studies revealed that complex 2 behaved as a single chain magnet with an effective energy barrier (Ueff/kB) of 46.8 K. Our findings highlight the possibilities in the development of cyanometallate-POM hybrid materials with captivating magnetic properties.
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Affiliation(s)
- Yue Cheng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Zi-Yi Chen
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Yi-Fei Deng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Yuan-Zhu Zhang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
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6
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Jia S, Shang M, Jin S, Zhu X, Cai Y, Li D. Electron transfer coupled spin transition in cyano-bridged mixed-valence {FeIII2FeII2} molecular squares. Dalton Trans 2024; 53:2807-2814. [PMID: 38230412 DOI: 10.1039/d3dt03208f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
The research on electron transfer coupled spin transition regulating the valence state and spin state transition of metal ions is promising and challenging. Herein, we report a cyano-bridged {FeIII2FeII2} molecular square complex, {[Fe(Tp)(CN)3]2 [Fe(bnbpen)]2}(ClO4)2·8CH3OH (1·8CH3OH, bnbpen = N,N'-bis-(2-naphthylmethyl)-N,N'-bis(2-picolayl)-ethylenediamine), and its free of solvents form (1). Combined single-crystal X-ray diffraction, temperature-dependent infrared (IR) spectra, magnetic measurements, and Mössbauer spectra reveal that 1·8CH3OH and 1 exhibit reversible one-step and two-step electron transfer coupled spin transition (ETCST) with temperature change, between the low-temperature state {FeII,LS(μ-CN)FeIII,LS}2 (LS = low spin, HS = high spin) and the high-temperature state {FeIII,LS(μ-CN)FeII,HS}2, respectively.
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Affiliation(s)
- Shuwen Jia
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Mengjia Shang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Sai Jin
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Xinrui Zhu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Yuanyuan Cai
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Dongfeng Li
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
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7
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Yan FF, Liu D, Cai R, Zhao L, Mao PD, Sun HY, Meng YS, Liu T. Simultaneous magneto-dielectric transitions in a fluorescent Hofmann-type coordination polymer. Dalton Trans 2023. [PMID: 38010925 DOI: 10.1039/d3dt03186a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
The design of magnetic molecular materials exhibiting multiple functions has garnered significant interest owing to their potential applications in molecular switches, sensors, and data storage devices. In this study, we synthesized a two-dimensional (2D) FeII-based Hofmann-type coordination polymer, namely {Fe(DPPE)2[Ag(CN)2]2}·2EtOH (1), using a luminescent ligand 1,1-diphenyl-2,2-di(4-pyridylbiphenyl)ethylene (DPPE). Single-crystal structural analyses and magnetic measurements revealed a thermally induced spin crossover (SCO) with the transition temperature T1/2 = 231 K. Variable-temperature fluorescence emission spectra indicated the coexistence of spin crossover and fluorescence properties. Moreover, a pronounced dielectric change (Δε' = 1.2 at 0.5 kHz) was observed during the SCO process, confirming the simultaneous magnetic and dielectric switching arising from the rearrangement of 3d electrons and deformation of the FeII-centered coordination sphere. This work provides an approach to explore the interplay between magnetic, dielectric, and fluorescence properties, and holds significance for developing multifunctional molecular materials.
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Affiliation(s)
- Fei-Fei Yan
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Dan Liu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Rui Cai
- Instrumental Analysis Center, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Liang Zhao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Pan-Dong Mao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Hui-Ying Sun
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Yin-Shan Meng
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Tao Liu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
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8
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Zheng H, Luo J, Wang X, Yin N, Zhang B, Gao X, Zhang Z, Shi Q, Liu J. Magnetic Property, Heat Capacity and Crystal Structure of Mononuclear Compounds Based on Substitute Tetrazole Ligand. Molecules 2023; 28:6633. [PMID: 37764409 PMCID: PMC10535496 DOI: 10.3390/molecules28186633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/03/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Three mononuclear compounds formulated as {M[(2-1H-tetrazol-5-yl)pyridine]2(H2O)2} (M = FeII (1), CoII (2), CuII (3)) were reported and synthesized. Their space group is monoclinic, P21/c, revealed by single-crystal X-ray diffraction. Antiferromagnetic interactions exist in Compounds 1, 2 and 3, as evidenced by magnetic and low-temperature heat capacity measurements. In addition, their thermodynamic functions were determined by a relaxation calorimeter, indicating that Compound 1 exhibits a Schottky anomaly in low-temperature heat capacity. This work can provide an important fundamental basis for the research of the thermophysical properties of molecular-based magnetic materials.
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Affiliation(s)
- Hui Zheng
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China; (X.W.); (B.Z.); (X.G.); (Z.Z.)
| | - Jipeng Luo
- Thermochemistry Laboratory, Dalian Technology Innovation Center for Energy Materials Thermodynamics, Liaoning Province Key Laboratory of Thermochemistry for Energy and Materials, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; (J.L.); (N.Y.); (Q.S.)
| | - Xiaoqin Wang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China; (X.W.); (B.Z.); (X.G.); (Z.Z.)
| | - Nan Yin
- Thermochemistry Laboratory, Dalian Technology Innovation Center for Energy Materials Thermodynamics, Liaoning Province Key Laboratory of Thermochemistry for Energy and Materials, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; (J.L.); (N.Y.); (Q.S.)
| | - Beibei Zhang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China; (X.W.); (B.Z.); (X.G.); (Z.Z.)
| | - Xuezhen Gao
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China; (X.W.); (B.Z.); (X.G.); (Z.Z.)
| | - Zongzheng Zhang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China; (X.W.); (B.Z.); (X.G.); (Z.Z.)
| | - Quan Shi
- Thermochemistry Laboratory, Dalian Technology Innovation Center for Energy Materials Thermodynamics, Liaoning Province Key Laboratory of Thermochemistry for Energy and Materials, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; (J.L.); (N.Y.); (Q.S.)
| | - Junshen Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China; (X.W.); (B.Z.); (X.G.); (Z.Z.)
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9
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Tang Z, Wen J, Zhuang GL, Wei RJ, Sun XP, Yao ZS, Tao J. Magnetic and Dielectric Switchings Actuated by the Rotation of the Picoline Ligand in an Iron-Based Dinuclear Phase-Transition Complex. Inorg Chem 2023; 62:266-274. [PMID: 36548144 DOI: 10.1021/acs.inorgchem.2c03364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Multifunctional materials with switchable magnetic and dielectric properties are crucial for the development of memory and sensor devices. Herein, we report a methoxy-bridged dinuclear iron-pyridyl complex [Fe2(4-picoline)4(NCS)4(μ-OCH3)2] (1), which shows simultaneous thermal-induced magnetic and dielectric switchings. Within the phase-transition temperature range, both magnetic switching and the dielectric anomaly were detected, in which the thermal hysteresis loops were 23 and 21 K, respectively. Detailed structural analyses revealed that these simultaneous switchings were rooted in the flexible rotatable ligands, which were actuated by readjusting the π-π intermolecular interactions between the pyridine ligands in the trans positions of the metal centers. These results were comprehensively investigated both experimentally and theoretically. This study presents a new guideline to control both the magnetic and dielectric properties of molecular complexes by external stimuli.
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Affiliation(s)
- Zheng Tang
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Liangxiang Campus, Beijing 102488, China
| | - Jun Wen
- Institute of Industrial Catalysis, College of Chemical Engineering, Zhejiang University of Technology, Zhejiang 310023, China
| | - Gui-Lin Zhuang
- Institute of Industrial Catalysis, College of Chemical Engineering, Zhejiang University of Technology, Zhejiang 310023, China
| | - Rong-Jia Wei
- College of Chemistry and Materials Science, and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, China
| | - Xiao-Peng Sun
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zi-Shuo Yao
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Liangxiang Campus, Beijing 102488, China
| | - Jun Tao
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Liangxiang Campus, Beijing 102488, China
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11
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12
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Synthesis, crystal structure and magnetic properties of mer-tricyanidoiron(III) precursor-based 1D heterobimetallic complexes. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2022. [DOI: 10.1515/znb-2022-0097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Three new cyanide-bridged heterometallic complexes {{[Cu(S,S-Chxn)2][Fe(bbp)(CN)3]}2·2 H2O}
n
(1), {{[Cu(R,R-Chxn)2][Fe(bbp)(CN)3]}2·2 H2O}
n
(2) and {{[Cu(Cycam)][Fe(bbp)(CN)3]}·CH3OH·2 H2O}
n
(3) (bbp = bis(2-benzimidazolyl)pyridine dianion, Chxn = 1,2-diaminocyclo hexane, cyclam = 1,4,8,11-tetraazacyclodecane) have been assembled from the rarely used mer-tricyanidoiron(III) building block [PPh4]2[Fe(bbp)(CN)3] and three copper(II) compounds. The complexes have been characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. For the chiral enantiomers 1 and 2, the circular dichroism (CD) spectrum was also investigated. X-ray structural analyses revealed that the structures of the cyanide-bridged Fe-Cu complexes 1 and 2 are characterized by two crystallographically independent but structurally very similar homochiral neutral chains, each consisting of the repeating units {[Cu(S,S-Chxn)2][Fe(bbp)(CN)3]} (1) or {[Cu(R,R-Chxn)2][Fe(bbp)(CN)3]} (2). The crystal structure of 3 likewise is build up of chains consisting of {[Cu(Cyclam)][Fe(bbp)(CN)3]} building blocks. The temperature-dependent magnetic susceptibility and field dependent magnetization of the complexes showed antiferromagnetic interactions in complex 1 between the Fe(III) and Cu(II) ions, while complex 3 is ferromagnetic, indicating that the magnetic coupling through cyanide linkage is very sensitive to the structure parameters around the paramagnetic metal ions. These results have been further confirmed by fitting of the experimental data using a uniform chain model, leading to the coupling constants J = −6.35 cm−1, g = 2.08, R = 4.42 × 10−4 and J = 1.24 cm−1, g = 2.09, R = ∑(χ
obsd
T − χ
cald
T)2/∑(χ
obsd
T)2 = 4.67 × 10−4 for complexes 1 and 3, respectively.
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13
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Wen W, Liu Q, Zhang S, Yao N, Oshio H, Meng Y, Liu T. Spin‐Crossover Tuned Rotation of Pyrazolyl Rings in a 2D Iron(II) Complex towards Synergetic Magnetic and Dielectric Transitions. Angew Chem Int Ed Engl 2022; 61:e202208886. [DOI: 10.1002/anie.202208886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Wen Wen
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
- College of Chemistry & Chemical Engineering Yantai University 30 Qingquan Rd. 264005 Yantai China
| | - Qiang Liu
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Shi‐Hui Zhang
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Nian‐Tao Yao
- 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
| | - Yin‐Shan Meng
- 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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Wu SG, Wang LF, Ruan ZY, Du SN, Gómez-Coca S, Ni ZP, Ruiz E, Chen XM, Tong ML. Redox-Programmable Spin-Crossover Behaviors in a Cationic Framework. J Am Chem Soc 2022; 144:14888-14896. [PMID: 35918175 DOI: 10.1021/jacs.2c06313] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Metal-organic frameworks (MOFs) provide versatile platforms to construct multi-responsive materials. Herein, by introducing the neutral tetradentate ligand and the linear dicyanoaurate(I) anion, we reported a rare cationic MOF [FeII(TPB){AuI(CN)2}]I·4H2O·4DMF (TPB = 1,2,4,5-tetra(pyridin-4-yl)benzene) with hysteretic spin-crossover (SCO) behavior near room temperature. This hybrid framework with an open metal site (AuI) exhibits redox-programmable capability toward dihalogen molecules. By means of post-synthetic modification, all the linear [AuI(CN)2]- linkers can be oxidized to square planar [AuIII(CN)2X2]- units, which results in the hysteretic SCO behaviors switching from one-step to two-step for Br2 and three-step for I2. More importantly, the stepwise SCO behaviors can go back to one-step via the reduction by l-ascorbic acid (AA). Periodic DFT calculations using various SCAN-type exchange-correlation functionals have been employed to rationalize the experimental data. Hence, these results demonstrate for the first time that switchable one-/two-/three-stepped SCO dynamics can be manipulated by chemical redox reactions, which opens a new perspective for multi-responsive molecular switches.
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Affiliation(s)
- Si-Guo Wu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, Guangdong, P. R. China
| | - Long-Fei Wang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, Guangdong, P. R. China
| | - Ze-Yu Ruan
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, Guangdong, P. R. China
| | - Shan-Nan Du
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, Guangdong, P. R. China
| | - Silvia Gómez-Coca
- Departament de Química Inorgànica i Orgànica and Institut de Recerca de Química Teórica i Computacional, Universitat de Barcelona, Diagonal 645, E-08028 Barcelona, Spain
| | - Zhao-Ping Ni
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, Guangdong, P. R. China
| | - Eliseo Ruiz
- Departament de Química Inorgànica i Orgànica and Institut de Recerca de Química Teórica i Computacional, Universitat de Barcelona, Diagonal 645, E-08028 Barcelona, Spain
| | - Xiao-Ming Chen
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, Guangdong, P. R. China
| | - Ming-Liang Tong
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, Guangdong, P. R. China
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15
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Wen W, Liu Q, Zhang SH, Yao NT, Oshio H, Meng YS, Liu T. Spin‐Crossover Tuned Rotation of Pyrazolyl Rings in a 2D Iron(II) Complex towards Synergetic Magnetic and Dielectric Transitions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Wen Wen
- Dalian University of Technology State Key Laboratory of Fine Chemicals 2 Linggong Rd. 116024 Dalian CHINA
| | - Qiang Liu
- Dalian University of Technology State Key Laboratory of Fine Chemicals 2 Linggong Rd. 116024 Dalian CHINA
| | - Shi-Hui Zhang
- Dalian University of Technology State Key Laboratory of Fine Chemicals 2 Linggong Rd. 116024 Dalian CHINA
| | - Nian-Tao Yao
- Dalian University of Technology State Key Laboratory of Fine Chemicals 2 Linggong Rd. 116024 Dalian CHINA
| | - Hiroki Oshio
- Dalian University of Technology State Key Laboratory of Fine Chemicals 2 Linggong Rd. 116024 Dalian CHINA
| | - Yin-Shan Meng
- Dalian University of Technology State Key Laboratory of Fine Chemicals 2 Linggong Rd., Dalian, 116024, China. 116024 Dalian CHINA
| | - Tao Liu
- Dalian University of Technology State Key Laboratory of Fine Chemicals 2 Linggong Rd. 116024 Dalian CHINA
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16
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Zheng H, Wang X, Li X, Wang C, Liu J. Spin-crossover in a trinuclear [Fe3(4-C3trz)6(H2O)6] (ClO4)] compound. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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17
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You M, Shao D, Deng YF, Yang J, Yao NT, Meng YS, Ungur L, Zhang YZ. [Au I(CN) 2]-Armed [Fe III2Fe II2] Square Complex Showing Unusual Spin-Crossover Behavior Due to a Symmetry-Breaking Phase Transition. Inorg Chem 2022; 61:5855-5860. [PMID: 35377631 DOI: 10.1021/acs.inorgchem.2c00192] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The incorporation of two different cyanide building blocks of [(TpR)FeIII(CN)3]- and [AuI(CN)2]- into one molecule afforded a novel hexanuclear [FeIII2FeII2AuI2] complex (1·2Et2O), in which the cyanide-bridged [FeIII2FeII2] square was further grafted by two [AuI(CN)2]- fragments as long arms in syn orientations. Complex 1·2Et2O undergoes a gradual spin crossover (SCO) ffrom low-spin (LS) to high-spin (HS) state for the Fe(II) centers upon desolvation. Remarkably, its desolvated phase (1) exhibits a reversible but atypical two-step (sharp-gradual) SCO behavior with considerable hysteresis (21 K). Variable-temperature single-crystal X-ray structural studies reveal that the hysteretic spin transition takes place synchronously with the concerted displacive motions of the molecules, representing another rare example including multistep and hysteretic spin transitions due to the synergetic SCO and structural phase transition.
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Affiliation(s)
- Maolin You
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China.,Department of Chemistry, National University of Singapore, Science Drive 3, Singapore 117543
| | - Dong Shao
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Yi-Fei Deng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Jiong Yang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Nian-Tao Yao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Yin-Shan Meng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Liviu Ungur
- Department of Chemistry, National University of Singapore, Science Drive 3, Singapore 117543
| | - Yuan-Zhu Zhang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
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18
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19
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Liu JH, Guo XQ, Wang ZC, Cai LX, Zhou LP, Tian CB, Sun QF. Cation modulated spin state and near room temperature transition within a family of compounds containing the same [FeL 2] 2- center. Dalton Trans 2022; 51:3894-3901. [PMID: 35167636 DOI: 10.1039/d1dt04254h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spin-crossover (SCO) active compounds have received much attention due to their potential application in molecular devices. Herein, a family of solvent-free FeII compounds, formulated as (A)2[FeL2], (H2L = pyridine-2,6-bi-tetrazolate, A = (Me)4N+1, Et2NH2+2, iPr2NH2+3 and iPrNH3+4), were synthesized and characterized. Single-crystal X-ray diffraction studies reveal that 1-4 are all supramolecular frameworks containing the same [FeL2]2- center, which is arranged into two packing modes via inter-molecular interactions, that is, a 3D architecture in 1 and 1D chain in 2-4. The spin states of 1-4 at different temperatures are assigned on the basis of the single-crystal X-ray diffraction data. Solid state magnetic investigations indicate that 1 and 4 exhibit a low spin state (below 350 K) and high spin state (2-400 K), respectively. 2 and 3 display clear SCO behavior in the measured temperature, but with different profiles and critical temperatures. 2 undergoes a complete gradual SCO with a critical temperature of T1/2 = 260 K. 3 has an abrupt near room temperature transition between T1/2 cooling = 278 K and T1/2 warming = 286, centered at 282 K (9 °C). This study reveals the importance of organic cations in the modulation of SCO behavior and offers a new insight for the design of SCO compounds with near room temperature spin transitions.
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Affiliation(s)
- Jia-Hui Liu
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Xiao-Qing Guo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Zi-Cheng Wang
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Li-Xuan Cai
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Li-Peng Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Chong-Bin Tian
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Qing-Fu Sun
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
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20
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Jia S, Fan L, Zheng CY, Jin S, Li D. Mixed-valence {FeII2FeIII4} hexanuclear complexes with thermally induced Fe(III) spin crossover behavior. Dalton Trans 2022; 51:12968-12974. [DOI: 10.1039/d2dt02041f] [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
Cyano-bridged mixed-valence {Fe6} hexanuclear complexes {[Tp4-MeFeII(CN)3]2[FeIII(Tpa)]2[FeIII(OR)(Tpa)]2}·6ClO4·S {Tp4-Me = tri(4-methyl-pyrazol-1-yl)borate, Tpa = Tris(2-pyridylmethyl)amine; R = -CH3 S = 8MeOH 1, R = -C2H5 S = 6EtOH 2 } have been obtained...
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21
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You M, Nguyen GT, Shao D, Wang T, Chang X, Ungur L, Zhang YZ. Manipulating the spin crossover behaviour in a series of cyanide-bridged {FeIII2FeII2} molecular squares through NCE- co-ligands. Dalton Trans 2022; 51:5596-5602. [DOI: 10.1039/d2dt00058j] [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
Manipulating the transition temperature (T1/2) of spin-crossover (SCO) complexes capable of fulfilling practical criteria through different synthetic strategies is one of the main focuses in the field of molecular magnetism....
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22
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Wu WW, Ruan ZY, Shi CG, Mai JT, Cui W, Ni ZP, Wu SG, Tong ML. 2D/3D spin crossover porous coordination polymers based on isomeric tetrapyridyl benzene ligands. CrystEngComm 2022. [DOI: 10.1039/d2ce00445c] [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
By employing cyanoborohydride and isomeric tetrapyridyl benzene ligands, a new three-dimensional (3D) [Fe(3-tpb)(NCBH3)2] (1·2H2O, 3-tpb = 1,2,4,5-tetra(pyridin-3-yl)benzene) and a two-dimensional (2D) [Fe(4-tpb)(NCBH3)2] (2·2-NapSMe and 2·H2O·3DMF, 4-tpb = 1,2,4,5-tetra(pyridin-4-yl)benzene, 2-NapSMe =...
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23
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Xie Y, Lin R, Chen B. Old Materials for New Functions: Recent Progress on Metal Cyanide Based Porous Materials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104234. [PMID: 34825524 PMCID: PMC8728855 DOI: 10.1002/advs.202104234] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/29/2021] [Indexed: 06/13/2023]
Abstract
Cyanide is the simplest ligand with strong basicity to construct open frameworks including some of the oldest compounds reported in the history of coordination chemistry. Cyanide can form numerous cyanometallates with different transition metal ions showing diverse geometries. Rational design of robust extended networks is enabled by the strong bonding nature and high directionality of cyanide ligand. By virtue of a combination of cyanometallates and/or organic linkers, multifunctional framework materials can be targeted and readily synthesized for various applications, ranging from molecular adsorptions/separations to energy conversion and storage, and spin-crossover materials. External guest- and stimuli-responsive behaviors in cyanide-based materials are also highlighted for the development of the next-generation smart materials. In this review, an overview of the recent progress of cyanide-based multifunctional materials is presented to demonstrate the great potential of cyanide ligands in the development of modern coordination chemistry and material science.
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Affiliation(s)
- Yi Xie
- Department of ChemistryUniversity of Texas at San AntonioOne UTSA CircleSan AntonioTX78249‐0698USA
| | - Rui‐Biao Lin
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat‐Sen UniversityGuangzhou510006China
| | - Banglin Chen
- Department of ChemistryUniversity of Texas at San AntonioOne UTSA CircleSan AntonioTX78249‐0698USA
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24
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Chen ZY, Cheng Y, Liu Q, Deng YF, Zhang YZ. Polyoxometalate-Assisted Assembly of Pearl-Chain-Like Cyanide-Bridged Single-Chain Magnets. Inorg Chem 2021; 61:931-938. [PMID: 34962120 DOI: 10.1021/acs.inorgchem.1c02922] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The introduction of Keggin-type POMs of [PMo12O40]3- or [SiW12O40]4- as counteranions into the FeIII-MII cyanometalate system afforded three chain complexes: [(Tp*)Fe(CN)3Ni(DMF)4]2{[(Tp*)Fe(CN)3Ni(DMF)3(H2O)]2Ni(DMF)4}[PMo12O40]2·14DMF (1, Tp*= hydridotris(3,5-dimethylpyrazol-1-yl)borate) and {[(Tp*)Fe(CN)3M(DMF)3(H2O)]2M(DMF)4}[SiW12O40]·3DMF (2, M = NiII; 3, M = CoII). Complex 1 contains both discrete cationic [Fe2Ni2]2+ squares and less-studied {Fe2Ni3}n pearl chains, namely 3,2-chains, while 2 and 3 consist of pure 3,2-chains due to the replacement of [PMo12O40]3- with [SiW12O40]4- bearing one more negative charge. Magnetic studies revealed that all of the complexes exhibit single-chain-magnet (SCM) behaviors with the effective thermal barriers of Δτ1/kB = 61.6 K (infinite regime) and Δτ2/kB = 36.5 K (finite regime) for 1, Δτ/kB = 46.9 K for 2 (finite), and Δτ/kB = 30.6 K for 3 (finite). The POM moieties may play a pivotal role for the realization of this promising archetype of favoring SCM property: (1) the highly negatively charged POMs may facilitate the formation of the uncommon highly positive "pearl chain"; (2) the nanosized POMs necessarily led to the good isolation of the chains in the title complexes, and (3) the employment of POMs with different charges may regulate the resultant complexes in both structure and magnetism.
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Affiliation(s)
- Zi-Yi Chen
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
| | - Yue Cheng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
| | - Qi Liu
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
| | - Yi-Fei Deng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
| | - Yuan-Zhu Zhang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
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Capel Berdiell I, Davies DJ, Woodworth J, Kulmaczewski R, Cespedes O, Halcrow MA. Structures and Spin States of Iron(II) Complexes of Isomeric 2,6-Di(1,2,3-triazolyl)pyridine Ligands. Inorg Chem 2021; 60:14988-15000. [PMID: 34547208 DOI: 10.1021/acs.inorgchem.1c02404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Iron(II) complex salts of 2,6-di(1,2,3-triazol-1-yl)pyridine (L1) are unexpectedly unstable in undried solvent. This is explained by the isolation of [Fe(L1)4(H2O)2][ClO4]2 and [Fe(NCS)2(L1)2(H2O)2]·L1, containing L1 bound as a monodentate ligand rather than in the expected tridentate fashion. These complexes associate into 44 grid structures through O-H···N hydrogen bonding; a solvate of a related 44 coordination framework, catena-[Cu(μ-L1)2(H2O)2][BF4]2, is also presented. The isomeric ligands 2,6-di(1,2,3-triazol-2-yl)pyridine (L2) and 2,6-di(1H-1,2,3-triazol-4-yl)pyridine (L3) bind to iron(II) in a more typical tridentate fashion. Solvates of [Fe(L3)2][ClO4]2 are low-spin and diamagnetic in the solid state and in solution, while [Fe(L2)2][ClO4]2 and [Co(L3)2][BF4]2 are fully high-spin. Treatment of L3 with methyl iodide affords 2,6-di(2-methyl-1,2,3-triazol-4-yl)pyridine (L4) and 2-(1-methyl-1,2,3-triazol-4-yl)-6-(2-methyl-1,2,3-triazol-4-yl)pyridine (L5). While salts of [Fe(L5)2]2+ are low-spin in the solid state, [Fe(L4)2][ClO4]2·H2O is high-spin, and [Fe(L4)2][ClO4]2·3MeNO2 exhibits a hysteretic spin transition to 50% completeness at T1/2 = 128 K (ΔT1/2 = 6 K). This transition proceeds via a symmetry-breaking phase transition to an unusual low-temperature phase containing three unique cation sites with high-spin, low-spin, and 1:1 mixed-spin populations. The unusual distribution of the spin states in the low-temperature phase reflects "spin-state frustration" of the mixed-spin cation site by an equal number of high-spin and low-spin nearest neighbors. Gas-phase density functional theory calculations reproduce the spin-state preferences of these and some related complexes. These highlight the interplay between the σ-basicity and π-acidity of the heterocyclic donors in this ligand type, which have opposing influences on the molecular ligand field. The Brønsted basicities of L1-L3 are very sensitive to the linkage isomerism of their triazolyl donors, which explains why their iron complex spin states show more variation than the better-known iron(II)/2,6-dipyrazolylpyridine system.
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Affiliation(s)
- Izar Capel Berdiell
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Daniel J Davies
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Jack Woodworth
- 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
| | - Malcolm A Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
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Qiu YR, Cui L, Ge JY, Kurmoo M, Ma G, Su J. Iron(II) Spin Crossover Coordination Polymers Derived From a Redox Active Equatorial Tetrathiafulvalene Schiff-Base Ligand. Front Chem 2021; 9:692939. [PMID: 34409015 PMCID: PMC8365465 DOI: 10.3389/fchem.2021.692939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/19/2021] [Indexed: 11/13/2022] Open
Abstract
Two polymorphic FeII coordination polymers [FeIIL (TPPE)0.5] 1) and [(FeII3L3 (TPPE)1.5)] 2), were obtained from a redox-active tetrathiafulvalene (TTF) functionalized ligand [H2L = 2,2’-(((2-(4,5-bis-(methylthio)-1,3-dithiol-2-ylidene)benzo(d) (1,3) dithiole-5,6-diyl)bis-(azanediyl))bis-(meth anylylidene)) (2E,2E')-bis(3-oxobutanoate)] and a highly luminescent connector {TPPE = 1,1,2,2-tetrakis[4-(pyridine-4-yl)phenyl]-ethene}. Complex 1 has a layered structure where the TPPE uses its four diverging pyridines from the TPPE ligand are coordinated by the trans positions to the flat TTF Schiff-base ligand, and complex 2 has an unprecedented catenation of layers within two interpenetrated frameworks. These coordination polymers reserved the redox activity of the TTF unit. Complex 1 shows gradual spin transition behavior without hysteresis. And the fluorescence intensity of TPPE in 1 changes in tandem with the spin crossover (SCO) transition indicating a possible interplay between fluorescence and SCO behavior.
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Affiliation(s)
- Ya-Ru Qiu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.,State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, China
| | - Long Cui
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, China
| | - Jing-Yuan Ge
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Mohamedally Kurmoo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, China.,Institut de Chimie de Strasbourg, CNRS-UMR 7177 Université de Strasbourg, Strasbourg, France
| | - Guijun Ma
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Jian Su
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, China
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27
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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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Yang JH, Zhao YX, Xue JP, Yao ZS, Tao J. Reverse Hofmann-Type Spin-Crossover Compound Showing a Multichannel Controllable Color Change in an Ambient Environment. Inorg Chem 2021; 60:7337-7344. [PMID: 33945276 DOI: 10.1021/acs.inorgchem.1c00484] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Materials that demonstrate a multichannel controllable color change in response to external stimuli are fascinating for their potential applications in sensoring and displaying devices. Herein we report a FeII spin-crossover (SCO) compound that exhibits both solvatochromism and thermochromism under an ambient environment. This Hofmann-type compound possesses two different pores where the solvent guests can be removed in a two-step process. Because the loss of solvent guests modifies the spin state of magnetic centers, an unusual yellow-red-yellow two-step color change of crystals was detected. Moreover, because of the strong cooperativity of the spin centers, a dramatic red-to-yellow color change of crystals in response to a minute thermal perturbation around 303 K is triggered by an abrupt spin transition of the metal centers. The multichannel controllable dramatic color change demonstrated in the present compound highlights the sensoring and displaying roles of SCO materials.
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Affiliation(s)
- Jing-Hua Yang
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Liangxiang Campus, Beijing 102488, People's Republic of China
| | - Yan-Xin Zhao
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Liangxiang Campus, Beijing 102488, People's Republic of China
| | - Jin-Peng Xue
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Liangxiang Campus, Beijing 102488, People's Republic of China
| | - Zi-Shuo Yao
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Liangxiang Campus, Beijing 102488, People's Republic of China
| | - Jun Tao
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Liangxiang Campus, Beijing 102488, People's Republic of China
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Liu Q, Hu JX, Meng YS, Jiang WJ, Wang JL, Wen W, Wu Q, Zhu HL, Zhao L, Liu T. Asymmetric Coordination Toward a Photoinduced Single-Chain Magnet Showing High Coercivity Values. Angew Chem Int Ed Engl 2021; 60:10537-10541. [PMID: 33569868 DOI: 10.1002/anie.202017249] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Indexed: 12/29/2022]
Abstract
The production of photo-switchable molecular nanomagnets with substantial coercivity, which is indispensable for information storage and process applications, is challenging. Introducing photo-responsive spin-crossover units provides a feasible means of controlling the magnetic anisotropy, interactions, and overall nanomagnet properties. Herein, we report a cyanide-bridged chain 1⋅12H2 O ({[(Pz Tp)FeIII (CN)3 ]2 FeII (Pmat)2 }n ⋅12 H2 O) generated by linking the FeII -based spin-crossover unit with the [(Pz Tp)Fe(CN)3 ]- (Pz Tp: tetrakis(pyrazolyl)borate) building block in the presence of asymmetric ditopic ligand Pmat ((4-pyridine-4-yl)methyleneamino-1,2,4-triazole). Structural characterization revealed that the introduction of this asymmetric ligand led to a distorted coordination environment of FeII ions, which were equatorially coordinated by four cyanide N atoms, and apically coordinated by one pyridine N atom and one triazole N atom. Upon 808-nm light irradiation, 1⋅12H2 O underwent photoinduced spin-crossover and exhibited single-chain magnet behavior with a coercive field of up to 1.3 T. This represents a 3d-based photoinduced single-chain magnet exhibiting pronounced hysteresis.
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Affiliation(s)
- Qiang Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., 116024, Dalian, China
| | - Ji-Xiang Hu
- 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
| | - Wen-Jing Jiang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., 116024, Dalian, China
| | - Jun-Li Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., 116024, Dalian, China
| | - Wen Wen
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., 116024, Dalian, China
| | - Qiong Wu
- 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
| | - Liang Zhao
- 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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30
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Liu Q, Hu J, Meng Y, Jiang W, Wang J, Wen W, Wu Q, Zhu H, Zhao L, Liu T. Asymmetric Coordination Toward a Photoinduced Single‐Chain Magnet Showing High Coercivity Values. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Qiang Liu
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Ji‐Xiang Hu
- 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
| | - Wen‐Jing Jiang
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Jun‐Li Wang
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Wen Wen
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Rd. 116024 Dalian China
| | - Qiong Wu
- 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
| | - Liang Zhao
- 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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31
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Huang W, Ma X, Sato O, Wu D. Controlling dynamic magnetic properties of coordination clusters via switchable electronic configuration. Chem Soc Rev 2021; 50:6832-6870. [PMID: 34151907 DOI: 10.1039/d1cs00101a] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Large-sized coordination clusters have emerged as a new class of molecular materials in which many metal atoms and organic ligands are integrated to synergize their properties. As dynamic magnetic materials, such a combination of multiple components functioning as responsive units has many advantages over monometallic systems due to the synergy between constituent components. Understanding the nature of dynamic magnetism at an atomic level is crucial for realizing the desired properties, designing responsive molecular nanomagnets, and ultimately unlocking the full potential of these nanomagnets for practical applications. Therefore, this review article highlights the recent development of large-sized coordination clusters with dynamic magnetic properties. These dynamic properties can be associated with spin transition, electron transfer, and valence fluctuation through their switchable electronic configurations. Subsequently, the article also highlights specialized characterization techniques with different timescales for supporting switching mechanisms, chemistry, and properties. Afterward, we present an overview of coordination clusters (such as cyanide-bridged and non-cyanide assemblies) with dynamic magnetic properties, namely, spin transition and electron transfer in magnetically bistable systems and mixed-valence complexes. In particular, the response mechanisms of coordination clusters are highlighted using representative examples with similar transition principles to gain insights into spin state and mixed-valence chemistry. In conclusion, we present possible solutions to challenges related to dynamic magnetic clusters and potential opportunities for a wide range of intelligent next-generation devices.
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Affiliation(s)
- Wei Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis & Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
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32
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Heras Ojea MJ, Van Raden JM, Louie S, Collins R, Pividori D, Cirera J, Meyer K, Jasti R, Layfield RA. Spin‐Crossover Properties of an Iron(II) Coordination Nanohoop. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Jeff M. Van Raden
- Department of Chemistry and Biochemistry and Materials Science Institute University of Oregon Eugene OR 97403 USA
| | - Shayan Louie
- Department of Chemistry and Biochemistry and Materials Science Institute University of Oregon Eugene OR 97403 USA
| | - Richard Collins
- Department of Chemistry University of Sussex Brighton BN1 9QJ UK
| | - Daniel Pividori
- Department of Chemistry and Pharmacy Inorganic Chemistry Friedrich-Alexander University Erlangen-Nürnberg (FAU) Egerlandstrasse 1 91058 Erlangen Germany
| | - Jordi Cirera
- Departament de Química Inorgànica i Orgànica and Institut de Recerca de Química Teòrica i Computacional Universitat de Barcelona Diagonal 645 08028 Barcelona Spain
| | - Karsten Meyer
- Department of Chemistry and Pharmacy Inorganic Chemistry Friedrich-Alexander University Erlangen-Nürnberg (FAU) Egerlandstrasse 1 91058 Erlangen Germany
| | - Ramesh Jasti
- Department of Chemistry and Biochemistry and Materials Science Institute University of Oregon Eugene OR 97403 USA
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33
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Jornet-Mollá V, Giménez-Saiz C, Yufit DS, Howard JAK, Romero FM. A Reversible Hydrogen-Bond Isomerization Triggered by an Abrupt Spin Crossover near Room Temperature. Chemistry 2021; 27:740-750. [PMID: 32812653 DOI: 10.1002/chem.202003654] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Indexed: 11/10/2022]
Abstract
The spin crossover salt [Fe(bpp)2 ](isonicNO)2 ⋅ 2.4 H2 O (1⋅2.4 H2 O) (bpp=2,6-bis(pyrazol-3-yl)pyridine; isonicNO=isonicotinate N-oxide anion) exhibits a very abrupt spin crossover at T1/2 =274.4 K. This triggers a supramolecular linkage (H-bond) isomerization that responds reversibly towards light irradiation or temperature change. Isotopic effects in the thermomagnetic behavior reveal the importance of hydrogen bonds in defining the magnetic state. Further, the title compound can be reversibly dehydrated to afford 1, a material that also exhibits spin crossover coupled to H-bond isomerization, leading to strong kinetic effects in the thermomagnetic properties.
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Affiliation(s)
- Verónica Jornet-Mollá
- Instituto de Ciencia Molecular, Universitat de València, P. O. Box 22085, 46071, Valencia, Spain
| | - Carlos Giménez-Saiz
- Instituto de Ciencia Molecular, Universitat de València, P. O. Box 22085, 46071, Valencia, Spain
| | - Dmitry S Yufit
- Department of Chemistry, Durham University, Durham, DH1 3LE, UK
| | | | - Francisco M Romero
- Instituto de Ciencia Molecular, Universitat de València, P. O. Box 22085, 46071, Valencia, Spain
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34
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Wen W, Meng YS, Jiao CQ, Liu Q, Zhu HL, Li YM, Oshio H, Liu T. Ferromagnetic Archimedean polyhedra {Fe 24M 18} (M = Fe, Ni, and Mn) with tunable electron configurations. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00593f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Three symmetric nanocages {Fe24M18} that mimic the Archimedean polyhedra, namely pseudo-rhombicuboctahedron, were synthesized. Their electron configurations depend highly on the changes of metal ions and the deprotonation of auxiliary ligands.
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Affiliation(s)
- Wen Wen
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., Dalian, 116024, China
| | - Yin-Shan Meng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., Dalian, 116024, China
| | - Cheng-Qi Jiao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., Dalian, 116024, China
| | - Qiang Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., Dalian, 116024, China
| | - Hai-Lang Zhu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., Dalian, 116024, China
| | - Ya-Ming Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., Dalian, 116024, China
| | - Hiroki Oshio
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., Dalian, 116024, China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., Dalian, 116024, China
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35
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Uezu Y, Tsunashima R, Tanaka C, Fujibayashi M, Manabe J, Nishihara S, Inoue K. Spin Crossover between the High-Spin and Low-Spin States and Dielectric Switching in the Ionic Crystals of a Fe(II) [2 × 2] Molecular Grid. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuta Uezu
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512, Japan
| | - Ryo Tsunashima
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512, Japan
- Chemistry Course, Faculty of Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512, Japan
| | - Chiaki Tanaka
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512, Japan
| | - Masaru Fujibayashi
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512, Japan
| | - Jun Manabe
- Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Sadafumi Nishihara
- Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Katsuya Inoue
- Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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36
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Heras Ojea MJ, Van Raden JM, Louie S, Collins R, Pividori D, Cirera J, Meyer K, Jasti R, Layfield RA. Spin-Crossover Properties of an Iron(II) Coordination Nanohoop. Angew Chem Int Ed Engl 2020; 60:3515-3518. [PMID: 33112017 DOI: 10.1002/anie.202013374] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Indexed: 12/20/2022]
Abstract
Addition of the bipyridyl-embedded cycloparaphenylene nanohoop bipy[9]CPP to [Fe{H2 B(pyz)2 }] (pyz=pyrazolyl) produces the distorted octahedral complex [Fe(bipy[9]CPP){H2 B(pyz)2 }2 ] (1). The molecular structure of 1 shows that the nanohoop ligand contains a non-planar bipy unit. Magnetic susceptibility measurements indicate spin-crossover (SCO) behaviour with a T1/2 of 130 K, lower than that of 160 K observed with the related compound [Fe(bipy){H2 B(pyz)2 }2 ] (2), which contains a conventional bipy ligand. A computational study of 1 and 2 reveals that the curvature of the nanohoop leads to the different SCO properties, suggesting that the SCO behaviour of iron(II) can be tuned by varying the size and diameter of the nanohoop.
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Affiliation(s)
| | - Jeff M Van Raden
- Department of Chemistry and Biochemistry and Materials Science Institute, University of Oregon, Eugene, OR, 97403, USA
| | - Shayan Louie
- Department of Chemistry and Biochemistry and Materials Science Institute, University of Oregon, Eugene, OR, 97403, USA
| | - Richard Collins
- Department of Chemistry, University of Sussex, Brighton, BN1 9QJ, UK
| | - Daniel Pividori
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Jordi Cirera
- Departament de Química Inorgànica i Orgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain
| | - Karsten Meyer
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Ramesh Jasti
- Department of Chemistry and Biochemistry and Materials Science Institute, University of Oregon, Eugene, OR, 97403, USA
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Jornet-Mollá V, Giménez-Saiz C, Cañadillas-Delgado L, Yufit DS, Howard JAK, Romero FM. Interplay between spin crossover and proton migration along short strong hydrogen bonds. Chem Sci 2020; 12:1038-1053. [PMID: 34163870 PMCID: PMC8179063 DOI: 10.1039/d0sc04918b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 11/16/2020] [Indexed: 12/19/2022] Open
Abstract
The iron(ii) salt [Fe(bpp)2](isonicNO)2·HisonicNO·5H2O (1) (bpp = 2,6-bis(pyrazol-3-yl)pyridine; isonicNO = isonicotinate N-oxide anion) undergoes a partial spin crossover (SCO) with symmetry breaking at T 1 = 167 K to a mixed-spin phase (50% high-spin (HS), 50% low-spin (LS)) that is metastable below T 2 = 116 K. Annealing the compound at lower temperatures results in a 100% LS phase that differs from the initial HS phase in the formation of a hydrogen bond (HB) between two water molecules (O4W and O5W) of crystallisation. Neutron crystallography experiments have also evidenced a proton displacement inside a short strong hydrogen bond (SSHB) between two isonicNO anions. Both phenomena can also be detected in the mixed-spin phase. 1 undergoes a light-induced excited-state spin trapping (LIESST) of the 100% HS phase, with breaking of the O4W⋯O5W HB and the onset of proton static disorder in the SSHB, indicating the presence of a light-induced activation energy barrier for proton motion. This excited state shows a stepped relaxation at T 1(LIESST) = 68 K and T 2(LIESST) = 76 K. Photocrystallography measurements after the first relaxation step reveal a single Fe site with an intermediate geometry, resulting from the random distribution of the HS and LS sites throughout the lattice.
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Affiliation(s)
- Verónica Jornet-Mollá
- Instituto de Ciencia Molecular, Universitat de València P. O. Box 22085 46071 València Spain
| | - Carlos Giménez-Saiz
- Instituto de Ciencia Molecular, Universitat de València P. O. Box 22085 46071 València Spain
| | | | - Dmitry S Yufit
- Department of Chemistry, Durham University Durham DH1 3LE UK
| | | | - Francisco M Romero
- Instituto de Ciencia Molecular, Universitat de València P. O. Box 22085 46071 València Spain
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38
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Yang J, Zhao XH, Deng YF, Zhang XY, Chang XY, Zheng Z, Zhang YZ. Azido-Cyanide Mixed-Bridged Fe III-Ni II Complexes. Inorg Chem 2020; 59:16215-16224. [PMID: 33105988 DOI: 10.1021/acs.inorgchem.0c01917] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The successful introduction of azide ions as secondary bridges into the FeIII-NiII cyanide system afforded two clusters and one unique 4(3),2-ribbon chain: [(bpzpy)2Ni2(μ2-1,1-N3)2{(pzTp)Fe(CN)3}2]·3H2O [1; bpzpy = 2,6-bis(pyrazol-1-yl)pyridine, and pzTp = tetrakis(pyrazolyl)borate], [(L1)2Ni4(μ3-1,1,1-OCH3)2(μ2-1,1-N3)2(H2O)2{(Tp)Fe(CN)3}2]·2CH3OH·H2O [2; Tp = hydrotris(pyrazolyl)borate, and HL1 = 2,6-bis{(2-hydroxypropylimino)methyl}-4-methylphenol], and [(L2)2Ni3(μ2-1,1-N3)4{(pzTp)Fe(CN)3}2]n (3; L2 = 2-{[phenyl(pyridin-2-yl)methylene]amino}ethan-1-amine). Both 1 and 2 feature the centrosymmetric {FeIII-NiII2-FeIII} and {FeIII-NiII4-FeIII} rodlike structures in which the two peripheral [(TpR)Fe(CN)3]- anions act as monodentate ligands via one cyanide group to link the central azide-bridged [Ni2] and [Ni4] subunit, respectively, while 3 displays an extended structure of the double-zigzag (4,2-ribbon) chain in which the double end-on azide-bridged trinuclear [Ni3] subunits serve as the 4-connected nodes. Magnetic study revealed that intramolecular ferromagnetic coupling is dominated by the azide or cyanide bridges in all of the complexes. Remarkably, complex 1 behaves as a single-molecule magnet with an effective energy barrier of 16.5 cm-1 at zero dc field, while complex 3 exhibits metamagnetism with a hidden spin canting property below 12 K.
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Affiliation(s)
- Jiong Yang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Xin-Hua Zhao
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Yi-Fei Deng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Xin-Yu Zhang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Xiao-Yong Chang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Zhiping Zheng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Yuan-Zhu Zhang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
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39
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Kang XM, Tang MH, Yang GL, Zhao B. Cluster/cage-based coordination polymers with tetrazole derivatives. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213424] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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40
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Gong Y, Li ZH, Yan X, Wang YQ, Zhao CY, Han WK, Hu QT, Lu HS, Gu ZG. Bivariate Metal-Organic Frameworks with Tunable Spin-Crossover Properties. Chemistry 2020; 26:12472-12480. [PMID: 32578255 DOI: 10.1002/chem.202002544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/18/2020] [Indexed: 11/05/2022]
Abstract
In this work, pyrazine (A), aminopyrazine (B), quinoxaline (C), and 5,6,7,8-tetrahydroquinoxaline (D) have been screened out among a large number of pyrazine derivatives to construct Hofmann-type metal-organic frameworks (MOFs) Fe(L)[M(CN)4 ] (M=Pt, Pd) with similar 3D pillared-layer structures. X-ray single-crystal diffraction reveals that the alternate linkage between M and FeII ions through cyano bridges forms the 2D extended metal cyanide sheets, and ligands A-D acted as vertical columns to connect the 2D sheets to give 3D pillared-layer structures. Subsequently, a series of bivariate MOFs were constructed by pairwise combination of the four ligands A-D, which were confirmed by 1 H NMR, PXRD, FTIR, and Raman spectroscopy. The results demonstrated that ligand size and crystallization rate play a dominant role in constructing bivariate Hofmann-type MOFs. More importantly, the spin-crossover (SCO) properties of the bivariate MOFs can be finely tuned by adjusting the proportion of the two pillared ligands in the 3D Hofmann-type structures. Remarkably, the spin transition temperatures, Tc ↑ and Tc ↓ of Fe(A)x (B)1-x [Pt(CN)4 ] (x=0 to 1) can be adjusted from 239 to 254 K and from 248 to 284 K, respectively. Meanwhile, the width of the hysteresis loops can be widened from 9 to 30 K. Changing Pt to Pd, the hysteresis loops of Fe(A)x (B)1-x [Pd(CN)4 ] can be tuned from 9 (Tc ↑=215 K, Tc ↓=206 K) to 24 K (Tc ↑=300 K, Tc ↓=276 K). This research provides wider implications in the development of advanced bistable materials, especially in precisely regulating SCO properties.
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Affiliation(s)
- Yu Gong
- Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Zhi-Hua Li
- Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Xiaodong Yan
- Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Ya-Qin Wang
- Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Chen-Yang Zhao
- Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Wang-Kang Han
- Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Qing-Tao Hu
- Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Hui-Shu Lu
- Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Zhi-Guo Gu
- Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China.,International Joint Research Center for Photoresponsive, Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
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41
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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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42
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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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43
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Xu Y, Wu LN, Li MX, Shi FN, Wang ZX. Syntheses, crystal structures and magnetic properties of two 1D copper complexes with Fe(IV) building block. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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44
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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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45
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Ostrovsky SM, Klokishner SI. Modeling of Electron Transfer in a Linear Trinuclear Fe-Co-Fe Complex: Magnetic and Polarizability Properties. J Phys Chem A 2020; 124:3618-3625. [PMID: 32279495 DOI: 10.1021/acs.jpca.0c01717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A microscopic approach to the problem of charge transfer-induced spin transitions in a system of interacting trinuclear Fe-Co-Fe clusters, which takes into account the switching of polarization during the transformation FelsII-ColsIII-FelsIII→ FelsIII-CohsII-FelsIII (ls-low spin, hs-high spin), has been developed. The cooperative electron-deformational and dipole-dipole interactions and the intracluster electron transfer have been proved to govern the observed significant changes in the magnetic and polarization characteristics of the examined system. The role of intra- and intercluster interactions in the spin transformation has been elucidated. On the basis of the developed approach, an explanation of the temperature dependence of the magnetic susceptibility and of the polar-nonpolar transformation in the {[FeTp(CN)3]2Co(Meim)4}·6H2O compound in response to thermal stimuli has been given.
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Affiliation(s)
- S M Ostrovsky
- Institute of Applied Physics, Chisinau MD-2028, Moldova
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46
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Wang JY, Luo YH, Xing FH, Jin XW, Guo LH, Zhai LH, Zhang L, Fang WX, Sun BW. Build 3D Nanoparticles by Using Ultrathin 2D MOF Nanosheets for NIR Light-Triggered Molecular Switching. ACS APPLIED MATERIALS & INTERFACES 2020; 12:15573-15578. [PMID: 32155041 DOI: 10.1021/acsami.0c00324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The coordination interactions between transition-metal ions (Cu2+, Ag+) and sulfur atoms on ultrathin two-dimensional (2D) nanosheets of spin-crossover (SCO) metal-organic frameworks {[Fe(1,3-bpp)2(NCS)2]2}n (1,3-bpp = 1,3-di(4-pyridyl)propane), which constructed the ultrathin 2D nanosheets into three-dimensional (3D) nanoparticles, have made a profound effect on the SCO performance. Compared with 2D nanosheets, both the intraligand π-π* transition band and the metal-to-ligand charge transition band from the d(Fe) + π(NCS) to π*(1,3-bpp), for the 3D nanoparticles, have shown dramatic blue-shifts; meanwhile, the d-d transition band for the high-spin (HS) state Fe(II) ions has been generated, suggesting significantly the influence of 3D assemble-caused dimensional changes on the solid-state SCO performance of ultrathin 2D nanosheets. More importantly, by loading on the ytterbium ion (Yb3+)-sensitized hexagonal phase upconverting nanoparticles in the aqueous colloidal suspension, the near infrared (NIR) light (980 nm) triggered HS (high spin) to LS (low spin) state transitions have been observed, demonstrating the achievement of challenging target of NIR light-triggered molecular conversion under environment conditions.
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Affiliation(s)
- Jia-Ying Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Yang-Hui Luo
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Feng-Hao Xing
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Xiao-Wei Jin
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Li-Hong Guo
- Lunan Pharmaceutical Company Ltd., Linyi, 276000 Shandong, China
| | - Li-Hai Zhai
- Lunan Pharmaceutical Company Ltd., Linyi, 276000 Shandong, China
| | - Lan Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Wen-Xia Fang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Bai-Wang Sun
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
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47
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Pask CM, Greatorex S, Kulmaczewski R, Baldansuren A, McInnes EJL, Bamiduro F, Yamada M, Yoshinari N, Konno T, Halcrow MA. Elucidating the Structural Chemistry of a Hysteretic Iron(II) Spin-Crossover Compound From its Copper(II) and Zinc(II) Congeners. Chemistry 2020; 26:4833-4841. [PMID: 32017244 DOI: 10.1002/chem.202000101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Indexed: 11/12/2022]
Abstract
Annealing [FeL2 ][BF4 ]2 ⋅2 H2 O (L=2,6-bis-[5-methyl-1H-pyrazol-3-yl]pyridine) affords an anhydrous material, which undergoes a spin transition at T1/2 =205 K with a 65 K thermal hysteresis loop. This occurs through a sequence of phase changes, which were monitored by powder diffraction in an earlier study. [CuL2 ][BF4 ]2 ⋅2 H2 O and [ZnL2 ][BF4 ]2 ⋅2 H2 O are not perfectly isostructural but, unlike the iron compound, they undergo single-crystal-to-single-crystal dehydration upon annealing. All the annealed compounds initially adopt the same tetragonal phase but undergo a phase change near room temperature upon re-cooling. The low-temperature phase of [CuL2 ][BF4 ]2 involves ordering of its Jahn-Teller distortion, to a monoclinic lattice with three unique cation sites. The zinc compound adopts a different, triclinic low-temperature phase with significant twisting of its coordination sphere, which unexpectedly becomes more pronounced as the crystal is cooled. Synchrotron powder diffraction data confirm that the structural changes in the anhydrous zinc complex are reproduced in the high-spin iron compound, before the onset of spin-crossover. This will contribute to the wide hysteresis in the spin transition of the iron complex. EPR spectra of copper-doped [Fe0.97 Cu0.03 L2 ][BF4 ]2 imply its low-spin phase contains two distinct cation environments in a 2:1 ratio.
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Affiliation(s)
- Christopher M Pask
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Sam Greatorex
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Rafal Kulmaczewski
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Amgalanbaatar Baldansuren
- School of Chemistry and Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.,current address: Chemistry and Chemical Biology, 120 Cogswell, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA
| | - Eric J L McInnes
- School of Chemistry and Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Faith Bamiduro
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Mihoko Yamada
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan.,current address: Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara, 630-0192, 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, UK.,Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
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48
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Thammasangwan W, Harding P, Telfer SG, Alkaş A, Phonsri W, Murray KS, Clérac R, Rouzières M, Chastanet G, Harding DJ. Thermal and Light‐Activated Spin Crossover in Iron(III) qnal Complexes. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Warisa Thammasangwan
- Functional Materials and Nanotechnology Center of Excellence Walailak University Thasala 80160 Nakhon Si Thammarat Thailand
| | - Phimphaka Harding
- Functional Materials and Nanotechnology Center of Excellence Walailak University Thasala 80160 Nakhon Si Thammarat Thailand
| | - Shane G. Telfer
- MacDiarmid Institute for Advanced Materials and Nanotechnology Institute of Fundamental Sciences Massey University PO Box 600 6140 Wellington New Zealand
| | - Adil Alkaş
- MacDiarmid Institute for Advanced Materials and Nanotechnology Institute of Fundamental Sciences Massey University PO Box 600 6140 Wellington New Zealand
| | - Wasinee Phonsri
- School of Chemistry Institute of Fundamental Sciences Monash University Clayton 3800 Melbourne Victoria Australia
| | - Keith S. Murray
- School of Chemistry Institute of Fundamental Sciences Monash University Clayton 3800 Melbourne Victoria Australia
| | - Rodolphe Clérac
- Centre de Recherche Paul Pascal, UMR 5031 Institute of Fundamental Sciences Univ. Bordeaux, CNRS 33600 Pessac France
| | - Mathieu Rouzières
- Centre de Recherche Paul Pascal, UMR 5031 Institute of Fundamental Sciences Univ. Bordeaux, CNRS 33600 Pessac France
| | - Guillaume Chastanet
- ICMCB Institute of Fundamental Sciences CNRS, Université de Bordeaux 87 avenue du Dr A. Schweitzer 33608 Pessac France
| | - David J. Harding
- Functional Materials and Nanotechnology Center of Excellence Walailak University Thasala 80160 Nakhon Si Thammarat Thailand
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49
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Chen YC, Meng Y, Dong YJ, Song XW, Huang GZ, Zhang CL, Ni ZP, Navařík J, Malina O, Zbořil R, Tong ML. Light- and temperature-assisted spin state annealing: accessing the hidden multistability. Chem Sci 2020; 11:3281-3289. [PMID: 34122835 PMCID: PMC8156335 DOI: 10.1039/c9sc05971g] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Among responsive multistable materials, spin crossover (SCO) systems are of particular interest for stabilizing multiple spin states with various stimulus inputs and physical outputs. Here, in a 2D Hofmann-type coordination polymer, [Fe(isoq)2{Au(CN)2}2] (isoq = isoquinoline), a medium-temperature annealing process is introduced after light/temperature stimulation, which accesses the hidden multistability of the spin state. With the combined effort of magnetic, crystallographic and Mössbauer spectral investigation, these distinct spin states are identified and the light- and temperature-assisted transition pathways are clarified. Such excitation-relaxation and trapping-relaxation joint mechanisms, as ingenious interplays between the kinetic and thermodynamic effects, uncover hidden possibilities for the discovery of multistable materials and the development of multistate intelligent devices. Two new two-stage manipulation protocols, namely light- and temperature-assisted spin state annealing (LASSA/TASSA), are applied to a spin crossover coordination polymer, [Fe(isoq)2{Au(CN)2}2], revealing the hidden multistability of spin states.![]()
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Affiliation(s)
- Yan-Cong Chen
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P. R. China
| | - Yan Meng
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P. R. China .,Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Key Laboratory of Functional Coordination Compounds of Anhui Higher Education Institutes, Anqing Normal University Anqing 246011 P. R. China
| | - Yan-Jie Dong
- Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Key Laboratory of Functional Coordination Compounds of Anhui Higher Education Institutes, Anqing Normal University Anqing 246011 P. R. China
| | - Xiao-Wei Song
- Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Key Laboratory of Functional Coordination Compounds of Anhui Higher Education Institutes, Anqing Normal University Anqing 246011 P. R. China
| | - Guo-Zhang Huang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P. R. China
| | - Chuan-Lei Zhang
- Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Key Laboratory of Functional Coordination Compounds of Anhui Higher Education Institutes, Anqing Normal University Anqing 246011 P. R. China
| | - Zhao-Ping Ni
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P. R. China
| | - Jakub Navařík
- Regional Centre of Advanced Technologies and Materials, Palacký University in Olomouc Šlechtitelů 27 783 71 Olomouc Czech Republic
| | - Ondřej Malina
- Regional Centre of Advanced Technologies and Materials, Palacký University in Olomouc Šlechtitelů 27 783 71 Olomouc Czech Republic
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials, Palacký University in Olomouc Šlechtitelů 27 783 71 Olomouc Czech Republic
| | - Ming-Liang Tong
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P. R. China
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50
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Yao ZS, Tang Z, Tao J. Bistable molecular materials with dynamic structures. Chem Commun (Camb) 2020; 56:2071-2086. [DOI: 10.1039/c9cc09238b] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this Feature Article, we introduce how to manipulate the motion of electrons or molecules by external stimuli, to achieve switchable properties in molecule-based single crystals.
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Affiliation(s)
- 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
| | - Zheng Tang
- 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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