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Chen QW, Ding YS, Zhu XF, Wang BW, Zheng Z. Substituent Positioning Effects on the Magnetic Properties of Sandwich-Type Erbium(III) Complexes with Bis(trimethylsilyl)-Substituted Cyclooctatetraenyl Ligands. Inorg Chem 2024; 63:9511-9519. [PMID: 38135507 DOI: 10.1021/acs.inorgchem.3c03369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
Lanthanide complexes with judiciously designed ligands have been extensively studied for their potential applications as single-molecule magnets. With the influence of ligands on their magnetic properties generally established, recent research has unearthed certain effects inherent to site differentiation due to the different types and varying numbers of substituents on the same ligand platform. Using two new sandwich-type Er(III) complexes with cyclooctatetraenyl (COT) ligands featuring two differently positioned trimethylsilyl (TMS) substituents, namely, [Li(DME)Er(COT1,5-TMS2)2]n (Er1) and [Na(DME)3][Er(COT1,3-TMS2)2] (Er2) [COT1,3-TMS2 and COT1,5-TMS2 donate 1,3- and 1,5-bis(trimethylsilyl)-substituted cyclooctatetraenyl ligands, respectively; DME = 1,2-dimethoxyethane], and with reference to previously reported [Li(DME)3][Er(COT1,4-TMS2)2] (A) and [K(DME)2][Er(COT1,4-TMS2)2] (B), any possible substituent position effects have been explored for the first time. The rearrangement of the TMS substituents from the starting COT1,4-TMS2 to COT1,3-TMS2 and COT1,5-TMS2, by way of formal migration of the TMS group, was thermally induced in the case of Er1, while for the formation of Er2, the use of Na+ in the placement of its Li+ and K+ congeners is essential. Both Er1 and Er2 display single-molecule magnetic behaviors with energy barriers of 170(3) and 172(6) K, respectively. Magnetic hysteresis loops, butterfly-shaped for Er1 and wide open for Er2, were observed up to 12 K for Er1 and 13 K for Er2. Studies of magnetic dynamics reveal the different pathways for relaxation of magnetization below 10 K, mainly by the Raman process for Er1 and by quantum tunneling of magnetization for Er2, leading to the order of magnitude difference in magnetic relaxation times and sharply different magnetic hysteresis loops.
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Affiliation(s)
- Qi-Wei Chen
- School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - You-Song Ding
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Key University Laboratory of Rare Earth Chemistry of Guangdong, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Xiao-Fei Zhu
- School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, China
| | - Bing-Wu Wang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhiping Zheng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Key University Laboratory of Rare Earth Chemistry of Guangdong, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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2
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Yin X, Deng L, Ruan L, Wu Y, Luo F, Qin G, Han X, Zhang X. Recent Progress for Single-Molecule Magnets Based on Rare Earth Elements. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093568. [PMID: 37176451 PMCID: PMC10180339 DOI: 10.3390/ma16093568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 04/29/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
Single-molecule magnets (SMMs) have attracted much attention due to their potential applications in molecular spintronic devices. Rare earth SMMs are considered to be the most promising for application owing to their large magnetic moment and strong magnetic anisotropy. In this review, the recent progress in rare earth SMMs represented by mononuclear and dinuclear complexes is highlighted, especially for the modulation of magnetic anisotropy, effective energy barrier (Ueff) and blocking temperature (TB). The terbium- and dysprosium-based SMMs have a Ueff of 1541 cm-1 and an increased TB of 80 K. They break the boiling point temperature of liquid nitrogen. The development of the preparation technology of rare earth element SMMs is also summarized in an overview. This review has important implications and insights for the design and research of Ln-SMMs.
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Affiliation(s)
- Xiang Yin
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Material Science and Engineering, Northeastern University, Shenyang 110819, China
| | - Li Deng
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Material Science and Engineering, Northeastern University, Shenyang 110819, China
| | - Liuxia Ruan
- Research Center for Humanoid Sensing, Zhejiang Laboratory, Hangzhou 311100, China
| | - Yanzhao Wu
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Material Science and Engineering, Northeastern University, Shenyang 110819, China
| | - Feifei Luo
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Material Science and Engineering, Northeastern University, Shenyang 110819, China
| | - Gaowu Qin
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Material Science and Engineering, Northeastern University, Shenyang 110819, China
| | - Xiaoli Han
- Taian Weiye Electromechanical Technology Co., Ltd., Taian 271000, China
| | - Xianmin Zhang
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Material Science and Engineering, Northeastern University, Shenyang 110819, China
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Kalita P, Ahmed N, Moorthy S, Béreau V, Bar AK, Kumar P, Nayak P, Sutter JP, Singh SK, Chandrasekhar V. Slow magnetic relaxation in a homoaxially phosphine oxide coordinated pentagonal bipyramidal Dy(III) complex. Dalton Trans 2023; 52:2804-2815. [PMID: 36752179 DOI: 10.1039/d2dt03789k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We report the synthesis of [(L)DyIII(Cy3PO)2]·[BPh4] (1-Dy) (where H2L = 2,6-diacetylpyridine bis-benzoylhydrazone and Cy = cyclohexyl) which crystallized in the triclinic, P1̄ space group. The local geometry around Dy(III) in 1-Dy was found to be pentagonal bipyramidal (pseudo-D5h). The AC magnetic susceptibility measurements performed on 1-Dy and on its diluted 1-Y(Dy) samples showed a typical single-molecule magnet signature revealed by the appearance of AC-frequency dependent out-of-phase susceptibility signals in the absence of a static magnetic field. The out-of-phase AC susceptibility signals were well resolved on the application of a small magnetic field (HDC = 500 Oe) and yielded an energy barrier for magnetization flipping of Ueff/kB = 50 K for the diluted derivative. The magnetic studies on 1-Dy and 1-Y(Dy) and data analysis further confirm that Raman and QTM under-barrier magnetic relaxations play a crucial role in lowering Ueff despite the almost axial nature of the Dy(III) ion in 1-Dy. We have rationalized these observations through detailed ab initio calculations performed on the X-ray crystal structure of 1-Dy.
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Affiliation(s)
- Pankaj Kalita
- Tata Institute of Fundamental Research, 36/P, Gopanpally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad 500046, India.
| | - Naushad Ahmed
- Tata Institute of Fundamental Research, 36/P, Gopanpally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad 500046, India.
| | - Shruti Moorthy
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, Telangana, India.
| | - Virginie Béreau
- Laboratoire de Chimie de Coordination du CNRS, Université de Toulouse, CNRS, Toulouse, France. .,Université de Toulouse, Institut Universitaire de Technologie Paul Sabatier-Département de Chimie, Av. Georges Pompidou, F-81104 Castres, France
| | - Arun Kumar Bar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, Andhra Pradesh 501507, India
| | - Pawan Kumar
- Department of Chemistry, IIT Kanpur, Kanpur 208016, India
| | - Prakash Nayak
- School of Chemical Sciences, National Institute of Science Education and Research, HBNI, Bhubaneswar 752050, India
| | - Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS, Université de Toulouse, CNRS, Toulouse, France.
| | - Saurabh Kumar Singh
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, Telangana, India.
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research, 36/P, Gopanpally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad 500046, India. .,Department of Chemistry, IIT Kanpur, Kanpur 208016, India
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Synthesis, Luminescence and magnetic properties of dinuclear complexes based on a “pincer” Schiff base and different β-diketonate ligands. Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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5
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Chen CP, Wang YF, Qin P, Zou HH, Liang FP. A DyIII Single-Ion Magnet with D5h Configuration. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Li YL, Wang HL, Zhu ZH, Lu XL, Liang FP, Zou HH. Alkali metal-linked triangular building blocks assemble a high-nucleation lanthanoid cluster based on single-molecule magnets. iScience 2022; 25:105285. [PMID: 36304113 PMCID: PMC9593797 DOI: 10.1016/j.isci.2022.105285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/24/2022] [Accepted: 10/04/2022] [Indexed: 11/28/2022] Open
Abstract
The metallic central magnetic axes in high-nucleation clusters with complex structural connections tend to be disorganized and cancel each other out. Therefore, high-nucleation clusters cannot easily exhibit single-molecule magnets (SMMs) behaviors. Herein, we select a triple-core building block (Dy3K2, 1) and use linked diamagnetic alkali metal to form an open, spherical, high-nucleation cluster Dy12Na6 (3) with SMM behavior. Furthermore, by changing the reaction conditions, Dy6K2 (2) formed by linking two Dy3 by K(I) is obtained. High-resolution electrospray mass spectrometry of clusters 1–3 effectively captures the building block Dy3, and clusters 1 and 3 and Dy3 have high stability even with the increase in ion source energy. To the best of our knowledge, this is the first time that an SMM based on a high-nucleation cluster has been obtained by connecting magnetic primitives via diamagnetic metal ions. Dy12K6 is currently the highest nuclear ns-4f heterometallic SMM. We synthesized ns-4f cluster-based SMM by using diamagnetic alkali metal connection Clusters 1–3 are rare examples of ns-4f heterometallic clusters Dy12K6 is currently the highest nuclear ns-4f heterometallic SMM HRESI-MS is used to explore the formation of ns-4f high-nucleation clusters
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Affiliation(s)
- Yun-Lan Li
- School of Chemistry and Pharmaceutical Sciences, State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, P. R. China
| | - Hai-Ling Wang
- School of Chemistry and Pharmaceutical Sciences, State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, P. R. China
| | - Zhong-Hong Zhu
- School of Chemistry and Pharmaceutical Sciences, State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, P. R. China,Corresponding author
| | - Xing-Lin Lu
- School of Chemistry and Pharmaceutical Sciences, State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, P. R. China
| | - Fu-Pei Liang
- School of Chemistry and Pharmaceutical Sciences, State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, P. R. China,Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China,Corresponding author
| | - Hua-Hong Zou
- School of Chemistry and Pharmaceutical Sciences, State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, P. R. China,Corresponding author
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Liu H, Li JF, Yin B. The coexistence of long τQTM and high Ueff as a concise criterion for a good single-molecule magnet: a theoretical case study of square antiprism dysprosium single-ion magnets. Phys Chem Chem Phys 2022; 24:11729-11742. [PMID: 35506508 DOI: 10.1039/d2cp00776b] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A systematic theoretical study is performed on a group of 16 square antiprism dysprosium single-ion magnets. Based on ab initio calculations, the quantum tunneling of magnetization (QTM) time, i.e., τQTM, and effective barrier of magnetic reversal, Ueff, are theoretically predicted. The theoretical τQTM is able to identify the ones with the longest QTM time with small numerical deviations. Similar results occur with respect to Ueff too. The systems possessing the best single-molecule magnet (SMM) properties here are just the ones having both the longest τQTM and the highest Ueff, from either experiment or theory. Thus, our results suggest the coexistence of long τQTM and high Ueff to be a criterion for high-performance SMMs. Although having its own limits, this criterion is easy to be applied in a large number of systems since both τQTM and Ueff could be predicted by theory with satisfactory efficiency and reliability. Therefore, this concise criterion could provide screened candidates for high-performance SMMs quickly and, hence, ease the burden of further exploration aiming for a higher degree of precision. This screening is important since the further exploration could easily demand tens or even hundreds of ab initio calculations for a single SMM. A semi-quantitative crystal field (CF) analysis is performed and shown here to be capable of indicating the general trends in a more chemically intuitive way. This analysis could help to identify the most important coordinating atoms for both diagonal and non-diagonal CF components. Thus, it could give some direct clues for improving the SMM properties: reducing the distance of the axial atom to the central ion, rotating the axial atom closer to the easy axis or increasing the amount of its negative charge. Correspondingly, opposite operations on the equatorial atom could give the same result.
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Affiliation(s)
- Hong Liu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Lab of Theoretical Molecular Magnetism, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China.
| | - Jin-Feng Li
- College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, 716000, P. R. China
| | - Bing Yin
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Lab of Theoretical Molecular Magnetism, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China.
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8
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Sutter JP, Béreau V, Jubault V, Bretosh K, Pichon C, Duhayon C. Magnetic anisotropy of transition metal and lanthanide ions in pentagonal bipyramidal geometry. Chem Soc Rev 2022; 51:3280-3313. [PMID: 35353106 DOI: 10.1039/d2cs00028h] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The magnetic anisotropy associated with a pentagonal bipyramidal (PBP) coordination sphere is examined on the basis of experimental and theoretical investigations. The origin and the characteristics of this anisotropy are discussed in relation to the electronic configuration of the metal ions. The effects of crystal field, structural distortion, and a second-coordination sphere on the observed anisotropies for transition meal and lanthanide ions are outlined. For the Ln derivatives, we focus on compounds showing SMM-like behavior (i.e. slow relaxation of their magnetization) in order to highlight the essential chemical and structural parameters for achieving strong axial anisotropy. The use of PBP complexes to impart controlled magnetic anisotropy in polynuclear species such as SMMs or SCMs is also addressed. This review of the magnetic anisotropies associated with a pentagonal bipyramidal coordination sphere for transition metal and lanthanide ions is intended to highlight some general trends that can guide chemists towards designing a compound with specific properties.
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Affiliation(s)
- Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
| | - Virginie Béreau
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France. .,Université de Toulouse, Institut Universitaire de Technologie Paul Sabatier-Département de Chimie, Av. Georges Pompidou, F-81104 Castres, France
| | - Valentin Jubault
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
| | - Kateryna Bretosh
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
| | - Céline Pichon
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
| | - Carine Duhayon
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
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Wu X, Li J, Yin B. The interpretation and prediction of lanthanide single-ion magnet from ab initio electronic structure calculation: The capability and limit. Dalton Trans 2022; 51:14793-14816. [DOI: 10.1039/d2dt01507b] [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
Single-molecule magnet (SMM) is a fascinating system holding the potential of being revolutionary micro-electronic device in information technology. However current SMMs are still far away from real-life application due to...
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10
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Xu F, Zhang J, Gu H, Ma R, Zhang S, Feng J, Yin B. Influence of synthesis conditions on the preparation of mononuclear Dy(III) compounds based on β-diketone ligands: Synthesis, structure, magnetic behavior and theoretical analysis. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122686] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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11
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Qu YX, Ruan ZY, Lyu BH, Chen YC, Huang GZ, Liu JL, Tong ML. Opening Magnetic Hysteresis via Improving Planarity of Equatorial Coordination by Hydrogen Bonding. Dalton Trans 2022; 51:7986-7996. [DOI: 10.1039/d2dt01107g] [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
Through a mixed-ligand strategy, the structural change from a discrete dinuclear DyIII cluster to a one-dimensional polymeric chain was achieved, maintaining the two magnetic entities with the same {Dy(dppbO2)2(H2O)5} (dppbO2...
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12
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Dong Y, Zhu L, Yin B, Zhu X, Li D. Regulating the magnetic properties of seven-coordinated Dy(III) single-ion magnets through the effect of positional isomers on axial crystal-field. Dalton Trans 2021; 50:17328-17337. [PMID: 34787614 DOI: 10.1039/d1dt02925h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Six Dy(III) single-ion magnets (SIMs) [Dy(n-OMe-bbpen)X] were synthesized by a solvothermal reaction with three positional isomers (ortho, meta, and para) of ligands n-OMe-H2bbpen and dysprosium halides DyX3, (n-OMe-H2bbpen = N,N'-bis(2-hydroxy-n-methoxybenzyl)-N,N'-bis(2-methylpyridyl)ethylenediamine; n = 3, X = Cl, 1; n = 3, X = Br, 2; n = 4, X = Cl, 3; n = 4, X = Br, 4; n = 5, X = Cl, 5; n = 5, X = Br, 6). Dynamic magnetic measurements revealed that the six complexes possess notably different effective barriers of magnetic reversal: 872.0 K (1), 1210.1 K (2), 137.9 K (3), 602.6 K (4), 907.0 K (5) and 1216.7 K (6). 6 showed the best performance as SIMs among the six Dy(III) complexes. Moreover, the magnetic hysteresis loops of 6 remained open at 21 K. The crystal structures indicate the switching of local symmetry around Dy(III) ion, aroused by the variation in intermolecular interactions and steric effects. This switch is primarily correlated with the distinction of magnetic properties. In addition, ab initio calculations confirmed that the different electrostatic potential around Dy(III) ion stemming from the electronic effect of the OMe-substituted group is another factor leading to the distinction in magnetic properties. This work warns us that when designing ligands for Dy-SIMs, the effect of positional isomerism on magnetic performance must be considered, which is one of the factors that can easily be overlooked.
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Affiliation(s)
- Yubao Dong
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
| | - Li Zhu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
| | - Bing Yin
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Lab of Theoretical Molecular Magnetism, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P. R. China.
| | - Xinrui Zhu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
| | - Dongfeng Li
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
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13
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Lüert D, Herbst‐Irmer R, Stalke D. Structural and Magnetic Studies on Lanthanide Bis(benzoxazol‐2‐yl)methanides. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daniel Lüert
- Institut für Anorganische Chemie Georg-August-Universität Göttingen Tammannstraße 4 37077 Göttingen Germany
| | - Regine Herbst‐Irmer
- Institut für Anorganische Chemie Georg-August-Universität Göttingen Tammannstraße 4 37077 Göttingen Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie Georg-August-Universität Göttingen Tammannstraße 4 37077 Göttingen Germany
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14
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Lai JJ, Ruan ZY, Huang GZ, Liu JL, Tong ML. A high-performance dysprosium(III) single-ion magnet with quasi-Oh symmetry. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Zhu L, Dong Y, Yin B, Ma P, Li D. Improving the single-molecule magnet properties of two pentagonal bipyramidal Dy 3+ compounds by the introduction of both electron-withdrawing and -donating groups. Dalton Trans 2021; 50:12607-12618. [PMID: 34545871 DOI: 10.1039/d1dt00964h] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Two mononuclear Dy3+ compounds [Dy(bmbpen-F)X] (X = Cl, 1; Br, 2) with a pentagonal bipyramidal (PBP) geometry were obtained from N,N'-bis-(5-methyl-2-hydroxybenzyl)-N,N'-bis(5-fluoro-2-methylpyridyl)ethylenediamine (H2bmbpen-F) and dysprosium halides. The magnetic anisotropy and single-molecule magnet (SMM) behavior of these PBP compounds were regulated by introducing both electron-withdrawing F atoms into the equatorial pyridine rings and electron-donating -CH3 groups into the axial phenolic hydroxyl rings. The results of magnetic characterization show that 1 and 2 exhibit single molecule magnet behavior with magnetization reversal barriers of 990(13) and 1189(16) K under a zero dc external field and magnetic hysteresis loops up to 26 K and 36 K, respectively. The results of ab initio calculations are consistent with the experimental observations, confirming that the simultaneous introduction of electron-withdrawing groups into the equatorial positions and electron-donating groups into the axial positions can lead to PBP Dy-SMMs with improved properties.
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Affiliation(s)
- Li Zhu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
| | - Yubao Dong
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
| | - Bing Yin
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P. R. China.
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Dongfeng Li
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
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16
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Xiong J, Yang ZX, Ma P, Lin D, Zheng Q, Huo Y. pH-Controlled Assembly of Two Polynuclear Dy(III)-Containing Polytungstoarsenates with Magnetic and Luminescence Properties. Inorg Chem 2021; 60:7519-7526. [DOI: 10.1021/acs.inorgchem.1c00859] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jia Xiong
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, People’s Republic of China
| | - Zeng-Xi Yang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, People’s Republic of China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People’s Republic of China
| | - Dunmin Lin
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, People’s Republic of China
| | - Qiaoji Zheng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, People’s Republic of China
| | - Yu Huo
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, People’s Republic of China
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17
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A potential ferromagnetic lanthanide‒transition heterometallic molecular‒based bacteriostatic agent. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129783] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Shen N, Liang J, Qu X, Liu S, Zhu L, Zhang S, Chen L, Zhang J, Hu D, Yin B. The influence of organic bases and substituted groups on coordination structures affording two mononuclear Dy( iii) single-molecule magnets (SMMs) and a novel Dy( iii)–K( i) compound with unusually coordinated fluorine atoms. CrystEngComm 2021. [DOI: 10.1039/d1ce00431j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The different organic bases and substituted groups of auxiliary ligands play an important role in synthetic processes, finally affording distinct structures and magnetic properties.
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Affiliation(s)
- Nan Shen
- Faculty of Chemistry and Chemical Engineering
- Engineering Research Center of Advanced Ferroelectric Functional Materials
- Key Laboratory of Phytochemistry of Shaanxi Province
- Baoji University of Arts and Sciences
- Baoji
| | - Jing Liang
- Shaanxi Provincial Cancer Hospital
- Xi' an 710069
- China
| | - Xiaoni Qu
- College of Environment and Chemistry Engineering
- Xi'an Polytechnic University
- Xi'an 710048
- P. R. China
| | - Sha Liu
- Faculty of Chemistry and Chemical Engineering
- Engineering Research Center of Advanced Ferroelectric Functional Materials
- Key Laboratory of Phytochemistry of Shaanxi Province
- Baoji University of Arts and Sciences
- Baoji
| | - Lin Zhu
- Faculty of Chemistry and Chemical Engineering
- Engineering Research Center of Advanced Ferroelectric Functional Materials
- Key Laboratory of Phytochemistry of Shaanxi Province
- Baoji University of Arts and Sciences
- Baoji
| | - Sheng Zhang
- Faculty of Chemistry and Chemical Engineering
- Engineering Research Center of Advanced Ferroelectric Functional Materials
- Key Laboratory of Phytochemistry of Shaanxi Province
- Baoji University of Arts and Sciences
- Baoji
| | - Ling Chen
- Shaanxi Provincial Cancer Hospital
- Xi' an 710069
- China
| | - Jiangwei Zhang
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS)
- Dalian 116023
- P. R. China
| | - Dengwei Hu
- Faculty of Chemistry and Chemical Engineering
- Engineering Research Center of Advanced Ferroelectric Functional Materials
- Key Laboratory of Phytochemistry of Shaanxi Province
- Baoji University of Arts and Sciences
- Baoji
| | - Bing Yin
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
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19
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Zhu L, Yin B, Ma P, Li D. Tuning the Equatorial Crystal-Field in Mononuclear DyIII Complexes to Improve Single-Molecule Magnetic Properties. Inorg Chem 2020; 59:16117-16121. [DOI: 10.1021/acs.inorgchem.0c01716] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li Zhu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Bing Yin
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Dongfeng Li
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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20
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Feng M, Ruan ZY, Chen YC, Tong ML. Physical stimulus and chemical modulations of bistable molecular magnetic materials. Chem Commun (Camb) 2020; 56:13702-13718. [DOI: 10.1039/d0cc04202a] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this Feature Article, we summarize the recent progress made in modulating the multifaceted magnetic behaviour of single-molecule magnets (SMMs) and spin-crossover (SCO) materials based on chemical modifications and external stimuli.
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Affiliation(s)
- Min Feng
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Ze-Yu Ruan
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - 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
| | - 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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