1
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Ruan TT, Moreno-Pineda E, Paul S, Schulze M, Schlittenhardt S, Mizuno A, Wernsdorfer W, Ruben M. Modulating quantum tunnelling of magnetization in Dy isotopologue dimers. Dalton Trans 2024. [PMID: 39373196 DOI: 10.1039/d4dt01769b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2024]
Abstract
Qudits are anticipated to streamline quantum computation by minimizing iterations, lowering error rates, and facilitating error correction. It has been shown that Dy(III)-based molecular systems can act as qudits with expanded Hilbert spaces. Achieving a robust intramolecular interaction, whether exchange or dipolar, is crucial for spanning the Hilbert space of qudits; hence, short Dy(III)⋯Dy(III) distances are required. Looking for multilevel systems that can be employed as qudits, we have synthesized and characterized two dysprosium-based isotopologues: [163Dy2(BTFA)4(PHZP)2]0 (1(I=5/2)) and [164Dy2(BTFA)4(PHZP)2]0 (2(I=0)), where BTFA = 3-benzoyl-1,1,1-trifluoroacetone and PHZP = N'-[(E)-(pyrazin-2-yl)methylidene]pyrazine-2-carbohydrazonate. Both complexes showed slow magnetic relaxation at zero applied magnetic field. μSQUID investigations, at milli-Kelvin temperatures, and direct and alternating current magnetic measurements reveal distinctions in the magnetic behavior between the two complexes and an operative interaction between the Dy(III) centers. We find that the presence or absence of the nuclear spin plays a minor role in the magnetic properties above 2 K. On the contrary, at milli-Kelvin temperatures, μSQUID studies show enhanced relaxation in 1(I=5/2), attributed to several quantum tunnelling pathways enabled by hyperfine and quadrupole interactions. The interplay between the antiferromagnetic coupling and enhanced relaxation indicates that the exchange coupling influences the relaxation mechanisms at different temperature ranges.
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Affiliation(s)
- Ting-Ting Ruan
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany.
| | - Eufemio Moreno-Pineda
- Universidad de Panamá, Facultad de Ciencias Naturales, Exactas y Tecnología, Depto. de Química-Física, Panamá, 0824, Panamá.
- Universidad de Panamá, Facultad de Ciencias Naturales, Exactas y Tecnología, Grupo de Investigación de Materiales, Panamá, 0824, Panamá
- Physikalisches Institut, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, D-76131, Karlsruhe, Germany.
| | - Sagar Paul
- Physikalisches Institut, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, D-76131, Karlsruhe, Germany.
| | - Michael Schulze
- Physikalisches Institut, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, D-76131, Karlsruhe, Germany.
| | - Sören Schlittenhardt
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany.
| | - Asato Mizuno
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Wolfgang Wernsdorfer
- Physikalisches Institut, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, D-76131, Karlsruhe, Germany.
| | - Mario Ruben
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany.
- Institute of Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
- Centre Européen de Sciences Quantiques (CESQ), Institutde Science et d'Ingénierie Supramoléculaires (ISIS), 8 allée Gaspard Monge, BP 70028, 67083, Strasbourg Cedex, France
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2
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Peng XH, Shang T, Zheng J, Liu M, Zheng Q, Guo FS. Enhancing the magnetic properties of Dy(III) single-molecule magnets in octahedral coordination symmetry by tuning the equatorial ligands. Dalton Trans 2024. [PMID: 39344482 DOI: 10.1039/d4dt02482f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
Conventionally, octahedral (Oh) coordination symmetry of lanthanide centers is not ideal for constructing high-performance single-molecule magnets (SMMs). However, introducing a strong ligand field in the axial direction to increase crystal field splitting can potentially overcome this limitation. Herein, we successfully obtained two dysprosium(III) single-molecule magnets, [Dy(OCtBu3)X2(py)3] (X = Cl (1), I (2), py = pyridine), in Oh coordination symmetry. The two complexes differ only in the coordinating anions on the equatorial plane, yet their magnetic performances are distinctly different. When chloride is replaced by a weaker donor iodide, the energy barrier is dramatically improved from 29 cm-1 (1) to 860 cm-1 (2), highlighting the importance of weakening the transverse ligand field and maximizing the axial ligand field for high-performance SMMs.
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Affiliation(s)
- Xiao-Han Peng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Xiyuan Avenue 2006, Chengdu 611731, China.
| | - Tao Shang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Xiyuan Avenue 2006, Chengdu 611731, China.
| | - Jieyu Zheng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Xiyuan Avenue 2006, Chengdu 611731, China.
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Ming Liu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Xiyuan Avenue 2006, Chengdu 611731, China.
| | - Qi Zheng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Xiyuan Avenue 2006, Chengdu 611731, China.
| | - Fu-Sheng Guo
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Xiyuan Avenue 2006, Chengdu 611731, China.
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3
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Arumugam S, Schwarz B, Ravichandran P, Kumar S, Ungur L, Mondal KC. Dipotassiumtetrachloride-bridged dysprosium metallocenes: a single-molecule magnet. Dalton Trans 2023; 52:15326-15333. [PMID: 37387215 DOI: 10.1039/d3dt01325a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
The present work describes the dynamic magnetic properties of the complex [(CpAr3)4DyIII2Cl4K2]·3.5(C7H8) (1), synthesized by employing a tri-aryl-substituted cyclopentadienyl ligand (CpAr3), [4,4'-(4-phenylcyclopenta-1,3-diene-1,2-diyl)bis(methylbenzene) = CpAr3H]. Each Dy(III)-metallocene weakly couples via K2Cl4, displaying slow relaxation of magnetization below 14.5 K under zero applied dc field via KD3 energy levels with an energy barrier of 136.9/133.7 cm-1 on the Dy sites. The single-ion axial anisotropy energy barrier is reduced by geometrical distortion due to the coordination of two chloride ions at each Dy centre.
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Affiliation(s)
- Selvakumar Arumugam
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, India.
| | - Björn Schwarz
- Institute for Applied Materials - Energy Storage Systems (IAM-ESS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | | | - Sunil Kumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, India.
| | - Liviu Ungur
- Department of Chemistry, National University of Singapore, Singapore.
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4
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Delano F, Benner F, Jang S, Demir S. Pyrrolyl-Bridged Metallocene Complexes: From Synthesis, Electronic Structure, to Single-Molecule Magnetism. Inorg Chem 2023; 62:14604-14614. [PMID: 37638984 DOI: 10.1021/acs.inorgchem.3c01724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
The π- and σ-basicity of the pyrrolyl ligand affords several coordination modes. A sterically encumbering coordination sphere around metal centers may foster new coordination modes for the pyrrolyl ligand. Here, we present three dinuclear rare earth complexes [Cp*2RE(μ-pyr)]2, [RE = Y (1), La (2), Dy (3); Cp* = pentamethylcyclopentadienyl, pyr = pyrrolyl], which were synthesized through a protonolysis reaction between allyl complexes and H-pyrrole. Each metal is ligated by two Cp* ligands and the N atom of the pyrrolyl ring while interacting with the π-system of the other pyrrolyl ligand, yielding an unprecedented coordination mode for pyrrolyl best described as [((η5-Cp*)2RE)2(μ-1η2-pyr-2κN)(μ-2η2-pyr-1κN)]. The steric congestion implemented by the Cp* ligands forces this asymmetric coordination of the pyrrolyl ligand. 1-3 were characterized by crystallography, electrochemistry, and spectroscopy. Density functional theory calculations on 1 uncovered the bonding situation between the pyrrolyl ligand and the yttrium(III) ion. Excitingly, 3 displays slow magnetic relaxation under zero dc field with Ueff = 98.9(7) cm-1 and τo = 6.7(1) × 10-8 s, placing it among coveted dinuclear metallocene single-molecule magnets. CASSCF calculations provided the energy of the crystal field states of DyIII and confirmed the barrier height.
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Affiliation(s)
- Francis Delano
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824, United States
| | - Florian Benner
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824, United States
| | - Seoyun Jang
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824, United States
| | - Selvan Demir
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824, United States
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5
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Mironova OA, Sukhikh TS, Konchenko SN, Pushkarevsky NA. Structural Diversity and Multielectron Reduction Reactivity of Samarium(II) Iodido-β-diketiminate Complexes Dependent on Tetrahydrofuran Content. Inorg Chem 2022; 61:15484-15498. [PMID: 36130049 DOI: 10.1021/acs.inorgchem.2c02101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The molecular structures of complexes [Sm(Nacnac)I(thf)n] (Nacnac = HC(C(Me)Ndipp)2-, dipp = 2,6-diisopropylphenyl, thf = tetrahydrofuran) depending on the number of thf ligands are studied. The complete removal of thf from a known complex [Sm(Nacnac)I(thf)2] leads to a tetranuclear product [Sm(Nacnac)I]4 (4). The partial removal of thf results in mixtures of dinuclear [Sm2(Nacnac)2I2(thf)] (2), trinuclear [Sm3(Nacnac)3I3(thf)] (3), and tetranuclear [Sm4(Nacnac)4I4(thf)2] (4*) complexes and 4, depending on the conditions. The reaction of solvent-free SmI2 with 1 equiv of K(Nacnac) results mainly in [Sm(Nacnac)2] (1), while the interaction of 4 with certain amounts of thf allows obtaining pure 2 and 3 (with the admixture of 4*). Complex 4* is the exact dimer of 2, and both compounds are stable in solutions. Reactions with 3 and 4 as reductants are studied. 4 is oxidized by I2 to stoichiometrically yield two products, mixed-valent tetranuclear [Sm4(Nacnac)4I5] (5) and binuclear [Sm(Nacnac)I2]2 (6) complexes. In the reaction of 4 with nBu3PTe, a trinuclear complex [Sm3(Nacnac)3(μ-I)3(μ3-E)2] (8, E = I or Te) is formed in small amounts, with the formation of 6 as the second product. 3 serves as a two-electron reductant in the reaction with nBu3PTe to yield a trinuclear complex [Sm3(Nacnac)3I3(μ-Te2)] (7). Complexes 2, 4, 4*, 5, 6, and 8 possess a unique flat SmxIy core of heavy atoms, which is assumed to be a consequence of the Nacnac ligand geometry.
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Affiliation(s)
- Olga A Mironova
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia
| | - Taisiya S Sukhikh
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia
| | - Sergey N Konchenko
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia
| | - Nikolay A Pushkarevsky
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia
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6
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Nguyen GT, Ungur L. The Role of Radical Bridges in Polynuclear Single‐Molecule Magnets. Chemistry 2022; 28:e202200227. [DOI: 10.1002/chem.202200227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Giang Truong Nguyen
- Department of Chemistry Faculty of Science National University of Singapore Block S8 Level 3, 3 Science Drive 3 Singapore Singapore 117543
| | - Liviu Ungur
- Department of Chemistry Faculty of Science National University of Singapore Block S8 Level 3, 3 Science Drive 3 Singapore Singapore 117543
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7
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Sheikh JA, Jena HS, Konar S. Co 3Gd 4 Cage as Magnetic Refrigerant and Co 3Dy 3 Cage Showing Slow Relaxation of Magnetisation. Molecules 2022; 27:molecules27031130. [PMID: 35164395 PMCID: PMC8840112 DOI: 10.3390/molecules27031130] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 02/04/2023] Open
Abstract
Two structurally dissimilar 3d-4f cages having the formulae [(CoIII)3Gd4(μ3-OH)2(CO3) (O2CtBu)11(teaH)3]·5H2O (1) and [(CoIII)3Dy3(μ3-OH)4(O2CtBu)6(teaH)3]·(NO3)2·H2O (2) have been isolated under similar reaction conditions and stoichiometry of the reactants. The most important factor for structural diversity seems to be the incorporation of one μ3-carbonate anion in 1 and not in 2. Co atoms are in a +3 oxidation state in both complexes, as shown by the Bond Valence Sum (BVS) calculations and bond lengths, and as further supported by magnetic measurements. Co3Gd4 displays a significant magnetocaloric effect (−∆Sm = 25.67 J kg−1 K−1), and Co3Dy3 shows a single molecule magnet (SMM) behavior.
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Affiliation(s)
- Javeed Ahmad Sheikh
- Department of Chemistry, Government, College for Women, Constituent College of Cluster University, M. A. Road, Srinagar 190001, Jammu and Kashmir, India
- Department of Chemistry, IISER Bhopal, Bhopal By-Pass Road, Bhopal 462066, Madhya Pradesh, India; or
- Correspondence: (J.A.S.); (S.K.); Tel.: +91-7889872799 (J.A.S.)
| | - Himanshu Sekhar Jena
- Department of Chemistry, IISER Bhopal, Bhopal By-Pass Road, Bhopal 462066, Madhya Pradesh, India; or
- Department of Chemistry, Ghent University, Krijgslaan 281-S3 B, 9000 Ghent, Belgium
| | - Sanjit Konar
- Department of Chemistry, IISER Bhopal, Bhopal By-Pass Road, Bhopal 462066, Madhya Pradesh, India; or
- Correspondence: (J.A.S.); (S.K.); Tel.: +91-7889872799 (J.A.S.)
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8
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Yang W, Velkos G, Sudarkova S, Büchner B, Avdoshenko SM, Liu F, Popov AA, Chen N. Carbon cage isomers and magnetic Dy⋯Dy interactions in Dy 2O@C 88 and Dy 2C 2@C 88 metallofullerenes. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01796b] [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
Isomers of Dy2O@C88 and Dy2C2@C88 show a strong variation in the type and strength of Dy⋯Dy superexchange interactions and magnetization relaxation rate.
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Affiliation(s)
- Wei Yang
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Georgios Velkos
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Svetlana Sudarkova
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Bernd Büchner
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Stanislav M. Avdoshenko
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Fupin Liu
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Alexey A. Popov
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Ning Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, P. R. China
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9
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Wang HS, Zhou PF, Wang J, Long QQ, Hu Z, Chen Y, Li J, Song Y, Zhang YQ. Significantly Enhancing the Single-Molecule-Magnet Performance of a Dinuclear Dy(III) Complex by Utilizing an Asymmetric Auxiliary Organic Ligand. Inorg Chem 2021; 60:18739-18752. [PMID: 34865470 DOI: 10.1021/acs.inorgchem.1c02169] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this work, we employed an asymmetric auxiliary organic ligand (1,1,1-trifluoroacetylacetone, Htfac) to further regulate the magnetic relaxation behavior of series of Dy2 single-molecule magnets (SMMs) with a N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2L) ligand. Fortunately, an air-stable Dy2 complex, [Dy2(L)2(tfac)2] (1; Htfac = 1,1,1-trifluoroacetylacetone) was obtained at room temperature. A structural analysis indicated that some Dy-O or Dy-N bond lengths for 1 are not in the range of those for the complexes [DyIII2(L)2(acac)2]·2CH2Cl2 (Dy2-acac; Hacac = acetylacetone) and [DyIII2(L)2(hfac)2] (Dy2-hfac; Hhfac = hexafluoroacetylacetone), although the electron-withdrawing ability of tfac- is stronger than that of acac- but weaker than that of hfac-. Additionally, the Dy-O3/O3a (the two O atoms bridged to DyIII ions) bond lengths are also affected by the asymmetrical Htfc ligand. This indicated that the charge distribution of the coordination atoms around DyIII has been modified in 1, which leads to the fine-tuning of the magnetic relaxation behavior of 1. Magnetic studies indicated that the values of effective energy barrier (Ueff) for 1 and its diluted sample (2) are 234.8(3) and 188.0(6) K, respectively, which are both higher than the reported value of 110 K for the complex Dy2-hfac. More interestingly, 1 exhibits a magnetic hysteresis opening when T < 2.5 K at zero field, while the hysteresis loops of 2 are closed at a zero dc field. This discrepancy is due to the weak intramolecular exchange coupling in 2, which cannot overcome the QTM of the single DyIII ion. Ab initio calculations for 1 revealed that the charge distributions of the coordination atoms around DyIII ions were regulated and the intramolecular exchange coupling was indeed improved when the asymmetrical Htfc was employed as a ligand for the synthesis of this kind of Dy2 SMM.
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Affiliation(s)
- Hui-Sheng Wang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, People's Republic of China
| | - Peng-Fei Zhou
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, People's Republic of China
| | - Jia Wang
- State Key Laboratory of Coordinate Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Qiao-Qiao Long
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, People's Republic of China
| | - Zhaobo Hu
- State Key Laboratory of Coordinate Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Yong Chen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, People's Republic of China
| | - Jing Li
- State Key Laboratory of Coordinate Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - You Song
- State Key Laboratory of Coordinate Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, People's Republic of China
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10
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Swain A, Sen A, Rajaraman G. Are lanthanide-transition metal direct bonds a route to achieving new generation {3d-4f} SMMs? Dalton Trans 2021; 50:16099-16109. [PMID: 34647556 DOI: 10.1039/d1dt02256c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lanthanide based single-molecule magnets are gaining wide attention due to their potential applications in emerging technologies. One of the main challenges in this area is quenching quantum tunnelling of magnetisation (QTM), which often undercuts the magnetisation reversal barrier. Among the several strategies employed, enhancing exchange coupling has been studied in detail, with large exchanges resulting in stronger quenching of QTM effects. Lanthanides, however, suffer from weak exchanges offered by the deeply buried 4f orbitals and the numerous attempts to enhance the exchange coupling in the {3d-4f} pairs have not exceeded values larger than 30 cm-1. In this work, using a combination of DFT and the ab initio CASSCF/RASSI-SO method, we have explored lanthanide-transition metal direct bonds as a tool to quench QTM effects. In this direction, we have modelled [PyCp2LnMCp(CO)2] (Ln = Gd(III), Dy(III), and Er(III) and M = V(0), Mn(0), Co(0) and Fe(I) and here PyCp2 = [2,6-(CH2C5H3)2C5H3N]2- using [PyCp2DyFeCp(CO)2] as an example as reported by Nippe et al. (C. P. Burns, X. Yang, J. D. Wofford, N. S. Bhuvanesh, M. B. Hall and M. Nippe, Angew. Chem., Int. Ed. 2018, 57, 8144). Bonding analysis reveals a dative Ln-TM bond with a donation of π(V/Mndxy-π*CO) to 5dz2 (Gd) in the case of Gd-V and Gd-Mn and 4s(Co) to 5dxy/5dyz (Gd) for Gd-Co with the transition metal ion being found in the low-spin S = ½ configurations in all the cases. B3LYP/TZV (Gd;CSDZ) calculations on [PyCp2GdMCp(CO)2] yield JGd-V = -46.1 cm-1, JGd-Mn = -57.1 cm-1, JGd-Co = +55.3 cm-1, JGd-Fe+ = +13.9 cm-1, JGd-Vhs = -162.1 cm-1 and JGd-Mnhs = -343.9 cm-1 and unveiling record-high J values for {3d-4f} complexes. The mechanism of magnetic coupling is developed, which discloses the dominating presence of strong 3d-4f orbital overlaps in most of the cases studied, leading to antiferromagnetic exchange. When these overlaps are weaker and 3d to Gd(5dz2), charge transfer dominates, yielding a ferromagnetic coupling for the Gd-Co/Gd-Fe+ complexes. Calculations performed on the anisotropic Dy(III) and Er(III) complexes reveal that the ground state gzz axis lies along the Cp-Ln-Cp axis and the Ln-TM bonds, respectively. Thus the Ln-TM bond hinders the single-ion anisotropy of Dy(III) by offering equatorial ligation and lowering the mJ = ±½ state energy, and at the same time, helping in enhancing the axiality of Er(III). When strong {3d-4f} exchange couplings are introduced, record-high barrier heights as high as 229 cm-1 were accomplished. Furthermore, the exchange coupling annihilates the QTM effects and suggests the lanthanide-transition metal direct bond as a viable alternative to enhance exchange coupling to bring {3d-4f} complexes back in the race for high-blocking SMMs.
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Affiliation(s)
- Abinash Swain
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India.
| | - Asmita Sen
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India.
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11
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Jung J, Benner F, Herbst‐Irmer R, Demir S, Stalke D. Slow Magnetic Relaxation in Mono- and Bimetallic Lanthanide Tetraimido-Sulfate S(NtBu) 4 2- Complexes. Chemistry 2021; 27:12310-12319. [PMID: 33978251 PMCID: PMC8453918 DOI: 10.1002/chem.202101076] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Indexed: 12/16/2022]
Abstract
Lanthanide ions are particularly well-suited for the design of single-molecule magnets owing to their large unquenched orbital angular momentum and strong spin-orbit coupling that gives rise to high magnetic anisotropy. Such nanoscopic bar magnets can potentially revolutionize high-density information storage and processing technologies, if blocking temperatures can be increased substantially. Exploring non-classical ligand scaffolds with the aim to boost the barriers to spin-relaxation are prerequisite. Here, the synthesis, crystallographic and magnetic characterization of a series of each isomorphous mono- and dinuclear lanthanide (Ln=Gd, Tb, Dy, Ho, Er) complexes comprising tetraimido sulfate ligands are presented. The dinuclear Dy complex [{(thf)2 Li(NtBu)2 S(tBuN)2 DyCl2 }2 ⋅ ClLi(thf)2 ] (1c) shows true signatures of single-molecule magnet behavior in the absence of a dc field. In addition, the mononuclear Dy and Tb complexes [{(thf)2 Li(NtBu)2 S(tBuN)2 LnCl2 (thf)2 ] (2b,c) show slow magnetic relaxation under applied dc fields.
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Affiliation(s)
- Jochen Jung
- Institut für Anorganische ChemieGeorg-August Universität GöttingenTammannstraße 437077GöttingenGermany
| | - Florian Benner
- Department of ChemistryMichigan State University578 S Shaw LaneEast LansingMI 48824USA
| | - Regine Herbst‐Irmer
- Institut für Anorganische ChemieGeorg-August Universität GöttingenTammannstraße 437077GöttingenGermany
| | - Selvan Demir
- Department of ChemistryMichigan State University578 S Shaw LaneEast LansingMI 48824USA
| | - Dietmar Stalke
- Institut für Anorganische ChemieGeorg-August Universität GöttingenTammannstraße 437077GöttingenGermany
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12
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Rosado Piquer L, Dreiser J, Sañudo EC. Heterometallic Co-Dy SMMs grafted on iron oxide nanoparticles. Dalton Trans 2021; 50:9589-9597. [PMID: 34160526 DOI: 10.1039/d1dt01519b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Heterometallic 3d-4f SMM [Co4Dy(OH)2(SALOH)5(chp)4(MeCN)(H2O)2] (1) has been deposited onto iron oxide nanoparticles (NPs) with an oleate self-assembled monolayer (SAM) as a surfactant. The obtained hybrid molecular-inorganic system 1-NP has been thoroughly characterized. The oleate SAM separates SMM 1 from the magnetic substrate to avoid the strong-coupling between the surface and molecule to ensure that 1 retains its magnetic properties in 1-NP. The magnetic properties of the hybrid system 1-NP have been characterized by element specific XMCD: the heterometallic SMM retains its magnetic properties on the surface of the iron oxide NPs while there is an enhancement of the magnetic properties of the NPs.
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Affiliation(s)
- Lidia Rosado Piquer
- Department of Inorganic and Organic Chemistry, Inorganic Chemistry Section, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain. and Institut de Nanociència i Nanotecnologia IN2UB, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Jan Dreiser
- Swiss Light Source, Paul Scherrer Institut, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
| | - E Carolina Sañudo
- Department of Inorganic and Organic Chemistry, Inorganic Chemistry Section, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain. and Institut de Nanociència i Nanotecnologia IN2UB, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain
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13
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Mayans J, Tesi L, Briganti M, Boulon ME, Font-Bardia M, Escuer A, Sorace L. Single-Ion Anisotropy and Intramolecular Interactions in Ce III and Nd III Dimers. Inorg Chem 2021; 60:8692-8703. [PMID: 34110135 PMCID: PMC8277162 DOI: 10.1021/acs.inorgchem.1c00647] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 12/11/2022]
Abstract
This article reports the syntheses, characterization, structural description, together with magnetic and spectroscopic properties of two isostructural molecular magnets based on the chiral ligand N,N'-bis((1,2-diphenyl-(pyridine-2-yl)methylene)-(R,R/S,S)-ethane-1,2-diamine), L1, of general formula [Ln2(RR-L1)2(Cl6)]·MeOH·1.5H2O, (Ln = Ce (1) or Nd (2)). Multifrequency electron paramagnetic resonance (EPR), cantilever torque magnetometry (CTM) measurements, and ab initio calculations allowed us to determine single-ion magnetic anisotropy and intramolecular magnetic interactions in both compounds, evidencing a more important role of the anisotropic exchange for the NdIII derivative. The comparison of experimental and theoretical data indicates that, in the case of largely rhombic lanthanide ions, ab initio calculations can fail in determining the orientation of the weakest components, while being reliable in determining their principal values. However, they remain of paramount importance to set the analysis of EPR and CTM on sound basis, thus obtaining a very precise picture of the magnetic interactions in these systems. Finally, the electronic structure of the two complexes, as obtained by this approach, is consistent with the absence of zero-field slow relaxation observed in ac susceptibility.
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Affiliation(s)
- Júlia Mayans
- Departament
de Química Inorgànica i Orgànica, Secció
Inorgànica and Institute of Nanoscience and Nanotechnology
(INUB), Universitat de Barcelona, Martí i Franques 1-11, Barcelona-08028, Spain
| | - Lorenzo Tesi
- Dipartimento
di Chimica “Ugo Schiff” & INSTM RU, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Firenze), Italy
| | - Matteo Briganti
- Dipartimento
di Chimica “Ugo Schiff” & INSTM RU, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Firenze), Italy
| | - Marie-Emmanuelle Boulon
- Dipartimento
di Chimica “Ugo Schiff” & INSTM RU, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Firenze), Italy
| | - Mercè Font-Bardia
- Unitat
de Difracció de R-X, Centre Científic i Tecnològic
de la Universitat de Barcelona (CCiTUB), Universitat de Barcelona, Solé i Sabarís 1-3, 08028 Barcelona, Spain
| | - Albert Escuer
- Departament
de Química Inorgànica i Orgànica, Secció
Inorgànica and Institute of Nanoscience and Nanotechnology
(INUB), Universitat de Barcelona, Martí i Franques 1-11, Barcelona-08028, Spain
| | - Lorenzo Sorace
- Dipartimento
di Chimica “Ugo Schiff” & INSTM RU, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Firenze), Italy
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14
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Jin P, Yu K, Zhai Y, Luo Q, Wang Y, Zhang X, Lv Y, Zheng Y. Chelating Guanidinates for Dysprosium(
III
)
Single‐Molecule
Magnets
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Peng‐Bo Jin
- Xi'an Jiaotong University Shenzhen Research School, Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Physics and School of Chemistry, Xi'an Jiaotong University 99 Yanxiang Road, Xi'an Shaanxi 710054 China
| | - Ke‐Xin Yu
- Xi'an Jiaotong University Shenzhen Research School, Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Physics and School of Chemistry, Xi'an Jiaotong University 99 Yanxiang Road, Xi'an Shaanxi 710054 China
| | - Yuan‐Qi Zhai
- Xi'an Jiaotong University Shenzhen Research School, Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Physics and School of Chemistry, Xi'an Jiaotong University 99 Yanxiang Road, Xi'an Shaanxi 710054 China
| | - Qian‐Cheng Luo
- Xi'an Jiaotong University Shenzhen Research School, Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Physics and School of Chemistry, Xi'an Jiaotong University 99 Yanxiang Road, Xi'an Shaanxi 710054 China
| | - Yi‐Dian Wang
- Xi'an Jiaotong University Shenzhen Research School, Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Physics and School of Chemistry, Xi'an Jiaotong University 99 Yanxiang Road, Xi'an Shaanxi 710054 China
| | - Xu‐Feng Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University 277 West Yanta Road, Xi'an Shaanxi 710061 China
| | - Yi Lv
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University 277 West Yanta Road, Xi'an Shaanxi 710061 China
| | - Yan‐Zhen Zheng
- Xi'an Jiaotong University Shenzhen Research School, Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Physics and School of Chemistry, Xi'an Jiaotong University 99 Yanxiang Road, Xi'an Shaanxi 710054 China
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15
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Dong L, Lu YB, Zhu SD, Wu JW, Zhang XT, Liao Y, Liu CM, Liu SJ, Xie YR, Zhang SY. A new family of dinuclear lanthanide complexes exhibiting luminescence, magnetic entropy changes and single molecule magnet behaviors. CrystEngComm 2021. [DOI: 10.1039/d0ce01477j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Four isomorphic and dinuclear lanthanide complexes were synthesized. Complexes EuIII and TbIII exhibit strong emissions, while GdIII shows the magnetocaloric effect and DyIII displays a single-molecule magnet.
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16
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Saber MR, Przyojski JA, Tonzetich ZJ, Dunbar KR. Slow magnetic relaxation in cobalt N-heterocyclic carbene complexes. Dalton Trans 2020; 49:11577-11582. [PMID: 32749418 DOI: 10.1039/d0dt02286a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The combined experimental and theoretical investigation of the magnetic properties of the cobalt(ii) NHC complexes (NHC = N-heterocyclic carbene); [Co(CH2SiMe3)2(IPr)] (1), [CoCl2(IMes)2] (2) and [Co(CH3)2(IMes)2] (3) revealed a large easy plane anisotropy for 1 (D = +73.7 cm-1) and a moderate easy axis anisotropy for 2 (D = -7.7 cm-1) due to significant out-of-state spin-orbit coupling. Dynamic magnetic measurements revealed slow relaxation of the magnetization for 1 (Ueff = 22.5 K, τ0 = 3 × 10-7 s, 1000 Oe) and for 2 (Ueff = 20.2 K, τ0 = 1.73 × 10-8 s, 1500 Oe). The molecular origin of the slow relaxation phenomena was further supported by the retention of AC signal in 10% solutions in 2-MeTHF which reveals a second zero field AC signal in 1 at higher frequencies. Compound 3 was found to be an S = 1/2 system.
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Affiliation(s)
- Mohamed R Saber
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA. and Chemistry Department, Faculty of Science, Fayoum University, Fayoum 63514, Egypt
| | - Jacob A Przyojski
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio, TX 78249, USA
| | - Zachary J Tonzetich
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio, TX 78249, USA
| | - Kim R Dunbar
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA.
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17
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Yao B, Lu F, Gan DX, Liu S, Zhang YQ, Deng YF, Zhang YZ. Incorporating Trigonal-Prismatic Cobalt(II) Blocks into an Exchange-Coupled [Co 2Cu] System. Inorg Chem 2020; 59:10389-10394. [PMID: 32700532 DOI: 10.1021/acs.inorgchem.0c01151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Taking advantage of a rigid tetradentate ligand of bis(pyrazoly)(3-pyrazolypyridinyl)methane (PyPz3) and the [CuII(opba)]2- unit [opba4- = o-phenylenebis(oxamato)], the trinuclear complex [{CoII(PyPz3)}2CuII(opba)][ClO4]2·5MeCN·MeOH (1) was constructed, in which the CoII centers adopt a trigonal-prismatic geometry, while considerable intramolecular magnetic coupling was successfully introduced through the oxamido bridges, representing another very first example of single-molecule magnets marrying both selected coordination geometry and magnetic exchanges.
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Affiliation(s)
- Binling Yao
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Fang Lu
- Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China
| | - De-Xuan Gan
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Shihao Liu
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, 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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18
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Han T, Giansiracusa MJ, Li ZH, Ding YS, Chilton NF, Winpenny REP, Zheng YZ. Exchange-Biasing in a Dinuclear Dysprosium(III) Single-Molecule Magnet with a Large Energy Barrier for Magnetisation Reversal. Chemistry 2020; 26:6773-6777. [PMID: 32097529 DOI: 10.1002/chem.202000719] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Indexed: 11/05/2022]
Abstract
A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy2 L2 (μ-Cl)2 (thf)2 ] has been made by using a diamine-bis(phenolate) ligand, H2 L. Magnetic studies show an energy barrier for magnetisation reversal (Ueff ) around 1000 K. An exchange-biasing effect is clearly seen in magnetic hysteresis with steps up to 3 K. Ab initio calculations exclude the possibility of a pure dipolar origin of this effect leading to the conclusion that super-exchange through the chloride bridging ligands is important.
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Affiliation(s)
- Tian Han
- School of Science, Frontier Institute of Science and Technology (FIST), Research institute of Xi'an Jiaotong University (Zhejiang), State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of, Sustainable Energy and Materials Chemistry, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Marcus J Giansiracusa
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Zi-Han Li
- School of Science, Frontier Institute of Science and Technology (FIST), Research institute of Xi'an Jiaotong University (Zhejiang), State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of, Sustainable Energy and Materials Chemistry, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - You-Song Ding
- School of Science, Frontier Institute of Science and Technology (FIST), Research institute of Xi'an Jiaotong University (Zhejiang), State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of, Sustainable Energy and Materials Chemistry, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.,Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Nicholas F Chilton
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Richard E P Winpenny
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Yan-Zhen Zheng
- School of Science, Frontier Institute of Science and Technology (FIST), Research institute of Xi'an Jiaotong University (Zhejiang), State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of, Sustainable Energy and Materials Chemistry, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
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19
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Jin P, Zhai Y, Yu K, Winpenny REP, Zheng Y. Dysprosiacarboranes as Organometallic Single‐Molecule Magnets. Angew Chem Int Ed Engl 2020; 59:9350-9354. [DOI: 10.1002/anie.202001401] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Peng‐Bo Jin
- Frontier Institute of Science and Technology (FIST)Xi'an Jiaotong University Shenzhen Research SchoolState Key Laboratory of Mechanical BehaviorMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MaterXi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | - Yuan‐Qi Zhai
- Frontier Institute of Science and Technology (FIST)Xi'an Jiaotong University Shenzhen Research SchoolState Key Laboratory of Mechanical BehaviorMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MaterXi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | - Ke‐Xin Yu
- Frontier Institute of Science and Technology (FIST)Xi'an Jiaotong University Shenzhen Research SchoolState Key Laboratory of Mechanical BehaviorMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MaterXi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | | | - Yan‐Zhen Zheng
- Frontier Institute of Science and Technology (FIST)Xi'an Jiaotong University Shenzhen Research SchoolState Key Laboratory of Mechanical BehaviorMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MaterXi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
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20
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Jin P, Zhai Y, Yu K, Winpenny REP, Zheng Y. Dysprosiacarboranes as Organometallic Single‐Molecule Magnets. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001401] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Peng‐Bo Jin
- Frontier Institute of Science and Technology (FIST)Xi'an Jiaotong University Shenzhen Research SchoolState Key Laboratory of Mechanical BehaviorMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MaterXi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | - Yuan‐Qi Zhai
- Frontier Institute of Science and Technology (FIST)Xi'an Jiaotong University Shenzhen Research SchoolState Key Laboratory of Mechanical BehaviorMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MaterXi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | - Ke‐Xin Yu
- Frontier Institute of Science and Technology (FIST)Xi'an Jiaotong University Shenzhen Research SchoolState Key Laboratory of Mechanical BehaviorMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MaterXi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | | | - Yan‐Zhen Zheng
- Frontier Institute of Science and Technology (FIST)Xi'an Jiaotong University Shenzhen Research SchoolState Key Laboratory of Mechanical BehaviorMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MaterXi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
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21
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Wen HR, Hu JJ, Yang K, Zhang JL, Liu SJ, Liao JS, Liu CM. Family of Chiral ZnII–LnIII (Ln = Dy and Tb) Heterometallic Complexes Derived from the Amine–Phenol Ligand Showing Multifunctional Properties. Inorg Chem 2020; 59:2811-2824. [DOI: 10.1021/acs.inorgchem.9b03164] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- He-Rui Wen
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
- School of Chemistry and Chemical Engineering, Jinggangshan University, Ji’an 343000, People’s Republic of China
| | - Jun-Jie Hu
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Kai Yang
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Jia-Li Zhang
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Sui-Jun Liu
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Jin-Sheng Liao
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
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22
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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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23
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Ke H, Yang Y, Wei W, Jiang Y, Zhang YQ, Xie G, Chen S. Synergistic effect of mixed ligands on the anisotropy axis of two dinuclear dysprosium complexes. Dalton Trans 2020; 49:10594-10602. [DOI: 10.1039/d0dt02139c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the synergistic effect of mixed ligands on the anisotropy axis of two dinuclear dysprosium complexes.
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Affiliation(s)
- Hongshan Ke
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Yongsheng Yang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Wen Wei
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Youdong Jiang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- P. R. China
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
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24
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Meng YS, Qiao YS, Yang MW, Xiong J, Liu T, Zhang YQ, Jiang SD, Wang BW, Gao S. Weak exchange coupling effects leading to fast magnetic relaxations in a trinuclear dysprosium single-molecule magnet. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01252d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we investigated the magnetic anisotropy and the influence of weak exchange interactions on the magnetic relaxations of a triangular type dysprosium single-molecule magnet.
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Affiliation(s)
- Yin-Shan Meng
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- P. R. China
- Beijing National Laboratory for Molecular Sciences
| | - Yu-Sen Qiao
- Beijing National Laboratory for Molecular Sciences
- Beijing Key Laboratory for Magnetoelectric Materials and Devices
- Peking University
- Beijing 100871
- P. R. China
| | - Mu-Wen Yang
- Beijing National Laboratory for Molecular Sciences
- Beijing Key Laboratory for Magnetoelectric Materials and Devices
- Peking University
- Beijing 100871
- P. R. China
| | - Jin Xiong
- Beijing National Laboratory for Molecular Sciences
- Beijing Key Laboratory for Magnetoelectric Materials and Devices
- Peking University
- Beijing 100871
- P. R. China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- P. R. China
| | - Shang-Da Jiang
- Beijing National Laboratory for Molecular Sciences
- Beijing Key Laboratory for Magnetoelectric Materials and Devices
- Peking University
- Beijing 100871
- P. R. China
| | - Bing-Wu Wang
- Beijing National Laboratory for Molecular Sciences
- Beijing Key Laboratory for Magnetoelectric Materials and Devices
- Peking University
- Beijing 100871
- P. R. China
| | - Song Gao
- Beijing National Laboratory for Molecular Sciences
- Beijing Key Laboratory for Magnetoelectric Materials and Devices
- Peking University
- Beijing 100871
- P. R. China
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25
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Zhang S, Shen N, Liu S, Ma R, Zhang YQ, Hu DW, Liu XY, Zhang JW, Yang DS. Rare CH3O−/CH3CH2O−-bridged nine-coordinated binuclear DyIII single-molecule magnets (SMMs) significantly regulate and enhance the effective energy barriers. CrystEngComm 2020. [DOI: 10.1039/c9ce02000d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work presents an efficient approach to regulating and enhancing the magnetic anisotropy barriers through using bridged CH3O− anion or CH3CH2O− anion and constructing triple bridges.
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Affiliation(s)
- 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
| | - 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
| | - 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
| | - Rong Ma
- 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
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Deng-Wei 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
| | - Xiang-Yu Liu
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Chemical Engineering
- Ningxia University
- Yinchuan 750021
| | - Jiang-Wei Zhang
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS)
- Dalian 116023
- P.R. China
| | - De-Suo Yang
- 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
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26
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Liu S, Lu J, Li XL, Zhu Z, Tang J. Counter anions influence the relaxation dynamics of phenoxy-bridged Dy2 single molecule magnets. Dalton Trans 2020; 49:12372-12379. [DOI: 10.1039/d0dt02451a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structural and magnetic investigations into four dinuclear dysprosium complexes reveal that the counter anion influences the dynamic relaxation process in these complexes.
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Affiliation(s)
- Shuting Liu
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Jingjing Lu
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Xiao-Lei Li
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Zhenhua Zhu
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
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27
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Moreno-Pineda E, Taran G, Wernsdorfer W, Ruben M. Quantum tunnelling of the magnetisation in single-molecule magnet isotopologue dimers. Chem Sci 2019; 10:5138-5145. [PMID: 31183066 PMCID: PMC6524608 DOI: 10.1039/c9sc01062a] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 04/12/2019] [Indexed: 01/19/2023] Open
Abstract
Quantum tunnelling of the magnetisation plays a major role in the magnetic properties of lanthanide Single-Molecule Magnets: while it is considered a problem for data storage device applications since it leads to information loss, it is an essential pre-requisite for the read-out and manipulation of the nuclear states in Quantum Information Processing schemes. Here we describe two isotopologue dysprosium dimers, i.e. [(163Dy(tmhd)3)2(bpym)] and [(164Dy(tmhd)3)2(bpym)] (tmd = tris(tetramethylheptanedionato) and bpym = bipyrimidine), where the nuclear spin presence or absence clearly affects the magnetic properties of the systems. Through μ-SQUID studies at milli-Kelvin temperatures and alternating current magnetic measurements, we find significant differences in the magnetic behaviour of both complexes. While simulation of the hysteresis loops at 30 mK reveals that the presence of nuclear spin does not influence the tunnelling rate, we find that it facilitates the coupling to the phonon bath enhancing the direct relaxation process; an observation reflected in the temperature and field dependence of the relaxation rates.
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Affiliation(s)
- Eufemio Moreno-Pineda
- Institute of Nanotechnology (INT) , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , D-76344 Eggenstein-Leopoldshafen , Germany . ; ;
| | - Gheorghe Taran
- Physikalisches Institut , Karlsruhe Institute of Technology , D-76131 Karlsruhe , Germany
| | - Wolfgang Wernsdorfer
- Institute of Nanotechnology (INT) , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , D-76344 Eggenstein-Leopoldshafen , Germany . ; ;
- Physikalisches Institut , Karlsruhe Institute of Technology , D-76131 Karlsruhe , Germany
- CNRS , Institut Néel , F-38042 Grenoble , France
| | - Mario Ruben
- Institute of Nanotechnology (INT) , Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1 , D-76344 Eggenstein-Leopoldshafen , Germany . ; ;
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) , CNRS-Université de Strasbourg , 23 rue du Loess, BP 43 , F-67034 Strasbourg Cedex 2 , France
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28
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Guo FS, Bar AK, Layfield RA. Main Group Chemistry at the Interface with Molecular Magnetism. Chem Rev 2019; 119:8479-8505. [PMID: 31059235 DOI: 10.1021/acs.chemrev.9b00103] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Innovative synthetic coordination and, increasingly, organometallic chemistry are at the heart of advances in molecular magnetism. Smart ligand design is essential for implementing controlled modifications to the electronic structure and magnetic properties of transition metal and f-element compounds, and many important recent developments use nontraditional ligands based on low-coordinate main group elements to drive the field forward. This review charts progress in molecular magnetism from the perspective of ligands in which the donor atoms range from low-coordinate 2p elements-particularly carbon but also boron and nitrogen-to the heavier p-block elements such as phosphorus, arsenic, antimony, and even bismuth. Emphasis is placed on the role played by novel main group ligands in addressing magnetic anisotropy of transition metal and f-element compounds, which underpins the development of single-molecule magnets (SMMs), a family of magnetic materials that can retain magnetization in the absence of a magnetic field below a blocking temperature. Nontraditional p-block donor atoms, with their relatively diffuse valence orbitals and more diverse bonding characteristics, also introduce scope for tuning the spin-orbit coupling properties and metal-ligand covalency in molecular magnets, which has implications in areas such as magnetic exchange coupling and spin crossover phenomena. The chemistry encompasses transition metals, lanthanides, and actinides and describes recently discovered molecular magnets that can be regarded, currently, as defining the state of the art. This review identifies that main group chemistry at the interface molecular magnetism is an area with huge potential to deliver new types of molecular magnets with previously unseen properties and applications.
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Affiliation(s)
- Fu-Sheng Guo
- Department of Chemistry, School of Life Sciences , University of Sussex , Brighton BN1 9QJ , United Kingdom
| | - Arun Kumar Bar
- Department of Chemistry, School of Life Sciences , University of Sussex , Brighton BN1 9QJ , United Kingdom
| | - Richard A Layfield
- Department of Chemistry, School of Life Sciences , University of Sussex , Brighton BN1 9QJ , United Kingdom
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29
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Wen HR, Zhang JL, Liang FY, Yang K, Liu SJ, Liu CM. Multifunctional Lanthanide Complexes Based on Tetraazacyclolamidophenol Ligand with Field-Induced Slow Magnetic Relaxation, Luminescent and SHG Properties. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801492] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- He-Rui Wen
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; 341000 Ganzhou Jiangxi Province P. R. China
| | - Jia-Li Zhang
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; 341000 Ganzhou Jiangxi Province P. R. China
| | - Fu-Yong Liang
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; 341000 Ganzhou Jiangxi Province P. R. China
| | - Kai Yang
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; 341000 Ganzhou Jiangxi Province P. R. China
| | - Sui-Jun Liu
- School of Metallurgy and Chemical Engineering; Jiangxi University of Science and Technology; 341000 Ganzhou Jiangxi Province P. R. China
| | - Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences; Center for Molecular Science; Chinese Academy of Sciences; 100190 Institute of Chemistry P. R. China
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30
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Jiang Z, Sun L, Li M, Wu H, Xia Z, Ke H, Zhang Y, Xie G, Chen S. Solvent-tuned magnetic exchange interactions in Dy2 systems ligated by a μ-phenolato heptadentate Schiff base. RSC Adv 2019; 9:39640-39648. [PMID: 35541401 PMCID: PMC9076079 DOI: 10.1039/c9ra08754k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 11/25/2019] [Indexed: 12/02/2022] Open
Abstract
A series of binuclear dysprosium compounds, namely, [Dy(api)]2 (1), [Dy(api)]2·2CH2Cl2 (2), [Dy(Clapi)]2·2C4H8O (3), and [Dy(Clapi)]2·2C3H6O (4) (H3api = 2-(2-hydroxyphenyl)-1,3-bis[4-(2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazoline; H3Clapi = 2-(2′-hydroxy-5′-chlorophenyl)-1,3-bis[3′-aza-4′-(2′′-hydroxy-5′′-chlorophenyl)prop-4′-en-1′-yl]-1,3-imidazolidine), have been isolated by the reactions of salen-type ligands H3api/H3Clapi with DyCl3·6H2O in different solvent systems. Structural analysis reveals that each salen-type ligand provides a heptadentate coordination pocket (N4O3) to encapsulate a DyIII ion and all of the DyIII centers in 1–4 adopt a distorted square antiprism geometry with D4d symmetry. Magnetic studies showed that compound 1 did not exhibit single-molecule magnetic (SMMs) behavior. With the introduction of different lattice solvents, compounds 2–4 showed filed-induced slow magnetic relaxation with barriers Ueff of 18.2 K (2), 28.0 K (3) and 16.4 K (4), respectively. Ab initio calculations were employed to interpret the magnetization behavior of 1–4. The combination of experimental and theoretical data reveal the importance of the weak exchange interaction between the DyIII ions in the observation of slow magnetic relaxation, and a relaxation mechanism has been developed to rationalize the observed difference in the Ueff values. The different lattice solvents influence Dy–O–Dy bond angles and thus alter the torsion of the square antiprism geometry, consequently resulting in distinct magnetic interactions and the magnetic behavior. Solvent-tuning changes the magnetic exchange interaction and results in different magnetic relaxation dynamics in Dy2 systems ligated by a μ-phenolato heptadentate Schiff base.![]()
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Affiliation(s)
- Zhijie Jiang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Lin Sun
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Min Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Haipeng Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Zhengqiang Xia
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Hongshan Ke
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Yiquan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Sanping Chen
- 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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31
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Bai C, Li CT, Hu HM, Liu B, Li JD, Xue G. Dy(iii) zig-zag chains assembled in a 3D framework with single-molecule magnet behaviour. Dalton Trans 2019; 48:814-817. [DOI: 10.1039/c8dt03617a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new lanthanide-based framework, [Dy(STP)(1,2-bdc)]n (1), represents 1D dysprosium zigzag chain architecture in a 3D framework and displays SMM behaviour under zero dc field.
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Affiliation(s)
- Chao Bai
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
- China
| | - Chuan-Ti Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
- China
| | - Huai-Ming Hu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
- China
| | - Bin Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
- China
| | - Jin-Dian Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
- China
| | - Ganglin Xue
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
- China
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32
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Han T, Ding YS, Li ZH, Yu KX, Zhai YQ, Chilton NF, Zheng YZ. A dichlorido-bridged dinuclear Dy(iii) single-molecule magnet with an effective energy barrier larger than 600 K. Chem Commun (Camb) 2019; 55:7930-7933. [PMID: 31219110 DOI: 10.1039/c9cc02436k] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We report a dichlorido-bridged dinuclear dysprosium(iii) single-molecule magnet [Dy(Cy2N)2(μ-Cl)(THF)]2 which shows an effective energy barrier for magnetization reversal (Ueff) of ca. 623 K. This is by far the largest Ueff barrier for any chlorido-bridged lanthanide single-molecule magnet. We observe two relaxation processes with near-identical temperature dependencies, one of which disappears upon magnetic dilution. We suspect that these two processes are the isolated and coupled relaxation processes.
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Affiliation(s)
- Tian Han
- School of Science, and Frontier Institute of Science and Technology (FIST), State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, China.
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33
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Wen HR, Zhang JL, Liang FY, Yang K, Liu SJ, Liao JS, Liu CM. TbIII/3d–TbIII clusters derived from a 1,4,7-triazacyclononane-based hexadentate ligand with field-induced slow magnetic relaxation and oxygen-sensitive luminescence. NEW J CHEM 2019. [DOI: 10.1039/c8nj05777j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family of new TbIII/3d–TbIII cluster complexes based on N,N′,N′′-tris(3,5-dimethyl-2-hydroxybenzyl)-1,4,7-triazacyclononane have been synthesized and they exhibit interesting magnetic and luminescent properties.
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Affiliation(s)
- He-Rui Wen
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Jia-Li Zhang
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Fu-Yong Liang
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Kai Yang
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Sui-Jun Liu
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Jin-Sheng Liao
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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34
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Rosado Piquer L, Dey S, Castilla-Amorós L, Teat SJ, Cirera J, Rajaraman G, Sañudo EC. Microwave assisted synthesis of heterometallic 3d–4f M4Ln complexes. Dalton Trans 2019; 48:12440-12450. [DOI: 10.1039/c9dt02567g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We describe the solvent-free microwave assisted synthesis and magnetic properties of a series of 3d–4f complexes of formula [M4Ln(OH)2(chp)4(SALOH)5(H2O)(MeCN)(Solv)] (Solv = MeOH, MeCN, H2O, M = Ni(ii), Co(ii); Ln = La, Gd, Dy, Tb).
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Affiliation(s)
- L. Rosado Piquer
- Departament de Química Inorgànica i Orgànica
- Secció Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - S. Dey
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - L. Castilla-Amorós
- Departament de Química Inorgànica i Orgànica
- Secció Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - S. J. Teat
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - J. Cirera
- Departament de Química Inorgànica i Orgànica
- Secció Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - G. Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - E. C. Sañudo
- Departament de Química Inorgànica i Orgànica
- Secció Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
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35
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Rosado Piquer L, Escoda-Torroella M, Ledezma Gairaud M, Carneros S, Daffé N, Studniarek M, Dreiser J, Wernsdorfer W, Sañudo EC. Hysteresis enhancement on a hybrid Dy(iii) single molecule magnet/iron oxide nanoparticle system. Inorg Chem Front 2019. [DOI: 10.1039/c8qi01346b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A novel hybrid NP-Dy12 system presents an enhancement of the magnetization hysteresis with respect to the isolated components while retaining the morphological characteristics of the parent NPs.
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Affiliation(s)
- Lidia Rosado Piquer
- Institut de Nanociència i Nanotecnologia-UB
- Barcelona
- Spain
- Secció de Química Inorgànica
- Departament de Química Inorgànica i Orgànica
| | - Mariona Escoda-Torroella
- Institut de Nanociència i Nanotecnologia-UB
- Barcelona
- Spain
- Secció de Química Inorgànica
- Departament de Química Inorgànica i Orgànica
| | - Marisol Ledezma Gairaud
- Escuela de Química
- Universidad de Costa Rica
- San José
- Costa Rica
- Centro de Electroquímica y Energía Química
| | - Saul Carneros
- Secció de Química Inorgànica
- Departament de Química Inorgànica i Orgànica
- Universitat de Barcelona
- Av. Diagonal 645
- Spain
| | - Niéli Daffé
- Swiss Light Source
- Paul Scherrer Institute
- Villigen PSI
- Switzerland
| | | | - Jan Dreiser
- Swiss Light Source
- Paul Scherrer Institute
- Villigen PSI
- Switzerland
| | | | - E. Carolina Sañudo
- Institut de Nanociència i Nanotecnologia-UB
- Barcelona
- Spain
- Secció de Química Inorgànica
- Departament de Química Inorgànica i Orgànica
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36
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Guo M, Zhang YQ, Zhu Z, Tang J. Dysprosium Compounds with Hula-Hoop-like Geometries: The Influence of Magnetic Anisotropy and Magnetic Interactions on Magnetic Relaxation. Inorg Chem 2018; 57:12213-12221. [DOI: 10.1021/acs.inorgchem.8b01878] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mei Guo
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Zhenhua Zhu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
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37
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Skvortsov GG, Cherkasov AV, Long J, Larionova J, Trifonov AA. Synthesis, structure and magnetic properties of the dinuclear complex [1,3-C6H4{NC(Ph)N(SiMe3)}2]3Dy2 coordinated by ansa-bis(amidinate) ligands with a m-phenylene linker. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.09.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Day BM, Guo FS, Layfield RA. Cyclopentadienyl Ligands in Lanthanide Single-Molecule Magnets: One Ring To Rule Them All? Acc Chem Res 2018; 51:1880-1889. [PMID: 30091896 DOI: 10.1021/acs.accounts.8b00270] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The discovery of materials capable of storing magnetic information at the level of single molecules and even single atoms has fueled renewed interest in the slow magnetic relaxation properties of single-molecule magnets (SMMs). The lanthanide elements, especially dysprosium, continue to play a pivotal role in the development of potential nanoscale applications of SMMs, including, for example, in molecular spintronics and quantum computing. Aside from their fundamentally fascinating physics, the realization of functional materials based on SMMs requires significant scientific and technical challenges to be overcome. In particular, extremely low temperatures are needed to observe slow magnetic relaxation, and while many SMMs possess a measurable energy barrier to reversal of the magnetization ( Ueff), very few such materials display the important properties of magnetic hysteresis with remanence and coercivity. Werner-type coordination chemistry has been the dominant method used in the synthesis of lanthanide SMMs, and most of our knowledge and understanding of these materials is built on the many important contributions based on this approach. In contrast, lanthanide organometallic chemistry and lanthanide magnetochemistry have effectively evolved along separate lines, hence our goal was to promote a new direction in single-molecule magnetism by uniting the nonclassical organometallic synthetic approach with the traditionally distinct field of molecular magnetism. Over the last several years, our work on SMMs has focused on obtaining a detailed understanding of why magnetic materials based on the dysprosium metallocene cation building block {Cp2Dy}+ display slow magnetic relaxation. Specifically, we aspired to control the SMM properties using novel coordination chemistry in a way that hinges on key considerations, such as the strength and the symmetry of the crystal field. In establishing that the two cyclopentadienyl ligands combine to provide a strongly axial crystal field, we were able to propose a robust magneto-structural correlation for understanding the properties of dysprosium metallocene SMMs. In doing so, a blueprint was established that allows Ueff and the magnetic blocking temperature ( TB) to be improved in a well-defined way. Although experimental discoveries with SMMs occur more rapidly than quantitative theory can (currently) process and explain, a clear message emanating from the literature is that a combination of the two approaches is most effective. In this Account, we summarize the main findings from our own work on dysprosium metallocene SMMs, and consider them in the light of related experimental studies and theoretical interpretations of related materials reported by other protagonists. In doing so, we aim to contribute to the nascent and healthy debate on the nature of spin dynamics in SMMs and allied molecular nanomagnets, which will be crucial for the further advancement of this vibrant research field.
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Affiliation(s)
- Benjamin M. Day
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Fu-Sheng Guo
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Richard A. Layfield
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, United Kingdom
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Three cyclic lanthanide-radical complexes syntheses, crystal structures and magnetic properties. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.05.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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40
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Roitershtein DM, Puntus LN, Vinogradov AA, Lyssenko KA, Minyaev ME, Dobrokhodov MD, Taidakov IV, Varaksina EA, Churakov AV, Nifant'ev IE. Polyphenylcyclopentadienyl Ligands as an Effective Light-Harvesting π-Bonded Antenna for Lanthanide +3 Ions. Inorg Chem 2018; 57:10199-10213. [PMID: 30051707 DOI: 10.1021/acs.inorgchem.8b01405] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A new approach to design "antenna-ligands" to enhance the photoluminescence of lanthanide coordination compounds has been developed based on a π-type ligand-the polyphenyl-substituted cyclopentadienyl. The complexes of di-, tri-, and tetraphenyl cyclopentadienyl ligands with Tb and Gd have been synthesized and all the possible structural types from mononuclear to di- and tetranuclear complexes, as well as a coordination polymer were obtained. All types of the complexes have been studied by single-crystal X-ray diffraction and optical spectroscopy. All terbium complexes are luminescent at ambient temperature and two of them have relatively high quantum yields (50 and 60%). Analysis of energy transfer process has been performed and supported by quantum chemical calculations. The role of a low-lying intraligand charge transfer state formed by extra coordination with K+ in the Tb3+ ion luminescence sensitization is discussed. New aspects for design of lanthanide complexes containing π-type ligands with desired luminescence properties have been proposed.
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Affiliation(s)
- Dmitrii M Roitershtein
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia.,N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , 47 Leninsky Prospect , 119991 , Moscow , Russia
| | - Lada N Puntus
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia.,V.A. Kotel'nikov Institute of Radioengineering and Electronics , Russian Academy of Sciences , 11-7 Mokhovaya Str. , 125009 , Moscow , Russia
| | - Alexander A Vinogradov
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia
| | - Konstantin A Lyssenko
- A.N. Nesmeyanov Institute of Organoelement Compounds , Russian Academy of Sciences , 28 Vavilova Str. , 119991 , Moscow , Russia
| | - Mikhail E Minyaev
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia
| | - Mikhail D Dobrokhodov
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia
| | - Ilya V Taidakov
- A.N. Nesmeyanov Institute of Organoelement Compounds , Russian Academy of Sciences , 28 Vavilova Str. , 119991 , Moscow , Russia.,P.N. Lebedev Physical Institute , Russian Academy of Sciences , 53 Leninsky Prospect , Moscow 119991 , Russia
| | - Evgenia A Varaksina
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia.,P.N. Lebedev Physical Institute , Russian Academy of Sciences , 53 Leninsky Prospect , Moscow 119991 , Russia
| | - Andrei V Churakov
- N.S. Kurnakov Institute of General and Inorganic Chemistry , Russian Academy of Sciences , 31 Leninsky Prospect , 119991 , Moscow , Russia
| | - Ilya E Nifant'ev
- A.V. Topchiev Institute of Petrochemical Synthesis , Russian Academy of Sciences , 29 Leninsky Prospect , 119991 , Moscow , Russia.,M.V. Lomonosov Moscow State University , Chemistry Department , 1 Leninskie Gory Str., Building 3 , 119991 , Moscow , Russia
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41
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Long J, Guari Y, Ferreira RA, Carlos LD, Larionova J. Recent advances in luminescent lanthanide based Single-Molecule Magnets. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.02.019] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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42
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Su K, Wu M, Wang W, Zhou M, Yuan D, Hong M. 3D metal-organic frameworks based on lanthanide-seamed dimeric pyrogallol[4]arene nanocapsules. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9220-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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43
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Wen HR, Yang K, Liu SJ, Liang FY, Xie XR, Liu CM, Li YW. Chiral mononuclear Dy(III) complex based on pyrrolidine-dithiocarboxylate S-donors with field-induced single-ion magnet behavior. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.12.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Zhang P, Perfetti M, Kern M, Hallmen PP, Ungur L, Lenz S, Ringenberg MR, Frey W, Stoll H, Rauhut G, van Slageren J. Exchange coupling and single molecule magnetism in redox-active tetraoxolene-bridged dilanthanide complexes. Chem Sci 2018; 9:1221-1230. [PMID: 29675167 PMCID: PMC5885778 DOI: 10.1039/c7sc04873d] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 12/07/2017] [Indexed: 12/22/2022] Open
Abstract
Tetraoxolene radical-bridged lanthanide SMM systems were prepared for the first time by reduction of the respective neutral compounds. Magnetic measurements reveal the profound influence of the radical center on magnetic behavior. Strong magnetic couplings are revealed in the radical species, which switch on SMM behavior under zero applied field for DyIII and TbIII compounds. HFEPR spectra unravel the contributions of the magnetic coupling and the magnetic anisotropy. For GdIII this results in much more accurate magnetic coupling parameters with respect to bulk magnetic measurements.
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Affiliation(s)
- Peng Zhang
- Institut für Physikalische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 , Stuttgart , Germany .
| | - Mauro Perfetti
- Institut für Physikalische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 , Stuttgart , Germany .
- Department of Chemistry , University of Copenhagen , Universitetparken 5 , 2100 Copenhagen , Denmark
| | - Michal Kern
- Institut für Physikalische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 , Stuttgart , Germany .
| | - Philipp P Hallmen
- Institut für Physikalische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 , Stuttgart , Germany .
| | - Liviu Ungur
- Theory of Nanomaterials Group , INPAC-Institute of Nanoscale Physics and Chemistry , Katholieke Universiteit Leuven , 3001 Leuven , Belgium
| | - Samuel Lenz
- Institut für Physikalische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 , Stuttgart , Germany .
| | - Mark R Ringenberg
- Institut für Anorganische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Wolfgang Frey
- Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Hermann Stoll
- Institut für Theoretische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Guntram Rauhut
- Institut für Theoretische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Joris van Slageren
- Institut für Physikalische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 , Stuttgart , Germany .
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45
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Long J, Lyubov DM, Mahrova TV, Cherkasov AV, Fukin GK, Guari Y, Larionova J, Trifonov AA. Synthesis, structure and magnetic properties of tris(pyrazolyl)methane lanthanide complexes: effect of the anion on the slow relaxation of magnetization. Dalton Trans 2018; 47:5153-5156. [DOI: 10.1039/c8dt00458g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis and magnetic properties of tris(pyrazolyl)methane lanthanide complexes.
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Affiliation(s)
- Jérôme Long
- Institut Charles Gerhardt
- Equipe Ingénierie Moléculaire et Nano-Objets
- Université de Montpellier
- ENSCM
- CNRS Place Eugène Bataillon
| | - Dimitry M. Lyubov
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
- Institute of Organoelement Compounds of Russian Academy of Sciences
- Moscow
| | - Tatyana V. Mahrova
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Anton V. Cherkasov
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Georgy K. Fukin
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Yannick Guari
- Institut Charles Gerhardt
- Equipe Ingénierie Moléculaire et Nano-Objets
- Université de Montpellier
- ENSCM
- CNRS Place Eugène Bataillon
| | - Joulia Larionova
- Institut Charles Gerhardt
- Equipe Ingénierie Moléculaire et Nano-Objets
- Université de Montpellier
- ENSCM
- CNRS Place Eugène Bataillon
| | - Alexander A. Trifonov
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
- Institute of Organoelement Compounds of Russian Academy of Sciences
- Moscow
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46
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Tian H, Wang BL, Lu J, Liu HT, Su J, Li D, Dou J. Consecutive one-/two-step relaxation transformations of single-molecule magnets via coupling dinuclear dysprosium compounds with chloride bridges. Chem Commun (Camb) 2018; 54:12105-12108. [DOI: 10.1039/c8cc06699j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A dimer of a dinuclear dysprosium(iii) SMM has been successfully isolated by assembling Dy2 SMMs. Such structural transformation involves the generation and cleavage of chloride bridges and leads to consecutive transformations of one- and two-step slow relaxation.
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Affiliation(s)
- Haiquan Tian
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
| | - Bao-Lin Wang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- P. R. China
| | - Jing Lu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
| | - Hou-Ting Liu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
| | - Jianhui Su
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
| | - Dacheng Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
| | - Jianmin Dou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
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47
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Rasamsetty A, Das C, Sañudo EC, Shanmugam M, Baskar V. Effect of coordination geometry on the magnetic properties of a series of Ln2 and Ln4 hydroxo clusters. Dalton Trans 2018; 47:1726-1738. [DOI: 10.1039/c7dt00172j] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Tetra and di-nuclear Lanthanide hydroxo clusters have been synthesized and characterized magnetically.
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Affiliation(s)
| | - Chinmoy Das
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - E. Carolina Sañudo
- Departament de Química Inorgànica i Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- Barcelona
- Spain
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48
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Hu P, Xiao FP, Li Y, Cao JF, Chen ZS, Zhu LL, Huang WP. One mononuclear single-molecule magnet derived from Dy(III) and dmbpy (dmbpy = 4,4′-dimethyl-2,2′-dipyridyl). INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.07.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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49
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Li Y, Zhao P, Zhang S, Li R, Zhang YQ, Yang EC, Zhao XJ. A Rare Water and Hydroxyl-Extended One-Dimensional Dysprosium(III) Chain and Its Magnetic Dilution Effect. Inorg Chem 2017; 56:9594-9601. [DOI: 10.1021/acs.inorgchem.7b01058] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan Li
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Pu Zhao
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Shan Zhang
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Rui Li
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for
NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, People’s Republic of China
| | - En-Cui Yang
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Xiao-Jun Zhao
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, People’s Republic of China
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50
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Mononuclear Dy(III) complex based on bipyridyl-tetrazolate ligand with field-induced single-ion magnet behavior and luminescent properties. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.03.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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