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Shukla P, Tarannum I, Roy S, Rajput A, Lama P, Singh SK, Kłak J, Lee J, Das S. Effect of diamagnetic Zn(II) ions on the SMM properties of a series of trinuclear ZnDy 2 and tetranuclear Zn 2Dy 2 (Ln III = Dy, Tb, Gd) complexes: combined experimental and theoretical studies. Dalton Trans 2024; 53:7053-7066. [PMID: 38564260 DOI: 10.1039/d4dt00417e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
To study the effect of diamagnetic ions on magnetic interactions, utilizing a compartmental ligand (Z)-2-(hydroxymethyl)-4-methyl-6-((quinolin-8-ylimino)methyl)phenol (LH2), two different series of ZnII-LnIII complexes, namely the trinuclear series of [DyZn2(L)2(μ2-OAc)2(CH3OH)2]·NO3·MeOH (1), [TbZn2(L)2(μ2-OAc)2(CH3OH)2]·NO3·5MeOH·H2O (2), and [GdZn2(L)2(μ2-OAc)2(CH3OH)2]·NO3·MeOH·CHCl3 (3) and the tetranuclear series of [Dy2Zn2(LH)4(NO3)4(μ2OAc)]·NO3·MeOH·H2O (4), [Tb2Zn2(LH)4(NO3)4(μ2-OAc)]·NO3·MeOH·2H2O (5), and [Gd2Zn2(LH)4(NO3)4(μ2-OAc)]·NO3·MeOH·2H2O (6), were synthesized. Trinuclear ZnII-LnIII complexes 1-3 consist of one LnIII ion sandwiched between two peripheral ZnII ions forming a bent type ZnII-DyIII-ZnII array with an angle of 110.64°. Tetranuclear ZnII-LnIII complexes 4-6 are basically a combination of two dinuclear moieties of [LnZn(LH)2(NO3)2]+ connected by one bidentate bridging acetate ion in μ2-OAc coordination mode. The detailed magnetic analysis reveals that complexes 1 and 4 are single molecule magnets having energy barriers of 34.98 K and 46.71 K with relaxation times (τ0) of 5.05 × 10-4 s and 5.24 × 10-4 s, respectively. Ab initio calculations were employed to analyze the magnetic anisotropy and magnetic exchange interaction between the ZnII and LnIII centers with the aim of gaining better insights into the magnetic dynamics of complexes 1-6.
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Affiliation(s)
- Pooja Shukla
- Department of Basic Sciences, Chemistry Discipline, Institute of Infrastructure Technology Research and Management, Near Khokhra Circle, Maninagar East, Ahmedabad-380026, Gujarat, India.
- Department of Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Ibtesham Tarannum
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502285, Sangareddy, Telangana, India.
| | - Soumalya Roy
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea.
| | - Amit Rajput
- Department of Chemistry, J. C. Bose University of Science & Technology, YMCA, Faridabad 121006, Haryana, India
| | - Prem Lama
- CSIR-Indian Institute of Petroleum, Nanocatalysis Area, LSP Division, Haridwar Road, Mokhampur, Dehradun 248005, India
| | - Saurabh Kumar Singh
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502285, Sangareddy, Telangana, India.
| | - Julia Kłak
- Faculty of Chemistry, University of Wroclaw, Wroclaw 50-383, Poland.
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea.
| | - Sourav Das
- Department of Basic Sciences, Chemistry Discipline, Institute of Infrastructure Technology Research and Management, Near Khokhra Circle, Maninagar East, Ahmedabad-380026, Gujarat, India.
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Kormschikov ID, Polovkova MA, Kirakosyan GA, Martynov AG, Gorbunova YG, Tsivadze AY. Magnetic Anisotropy of Homo- and Heteronuclear Terbium(III) and Dysprosium(III) Trisphthalocyaninates Derived from Paramagnetic 1H-NMR Investigation. Molecules 2024; 29:510. [PMID: 38276588 PMCID: PMC11154240 DOI: 10.3390/molecules29020510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 01/13/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024] Open
Abstract
1H-NMR spectroscopy of lanthanide complexes is a powerful tool for deriving spectral-structural correlations, which provide a clear link between the symmetry of the coordination environment of paramagnetic metal centers and their magnetic properties. In this work, we have first synthesized a series of homo- (M = M* = Dy) and heteronuclear (M ≠ M* = Dy/Y and Dy/Tb) triple-decker complexes [(BuO)8Pc]M[(BuO)8Pc]M*[(15C5)4Pc], where BuO- and 15C5- are, respectively, butoxy and 15-crown-5 substituents on phthalocyanine (Pc) ligands. We provide an algorithmic approach to assigning the 1H-NMR spectra of these complexes and extracting the axial component of the magnetic susceptibility tensor, χax. We show how this term is related to the nature of the lanthanide ion and the shape of its coordination polyhedron, providing an experimental basis for further theoretical interpretation of the revealed correlations.
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Affiliation(s)
- Ilya D. Kormschikov
- Faculty of Chemistry, Lomonosov Moscow State University, GSP-1, Leninskie Gory, 119991 Moscow, Russia;
| | - Marina A. Polovkova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
| | - Gayane A. Kirakosyan
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr., 31, 119991 Moscow, Russia
| | - Alexander G. Martynov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
| | - Yulia G. Gorbunova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr., 31, 119991 Moscow, Russia
| | - Aslan Yu. Tsivadze
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr., 31, 119991 Moscow, Russia
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3
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Adamek M, Pastukh O, Laskowska M, Karczmarska A, Laskowski Ł. Nanostructures as the Substrate for Single-Molecule Magnet Deposition. Int J Mol Sci 2023; 25:52. [PMID: 38203222 PMCID: PMC10778921 DOI: 10.3390/ijms25010052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/06/2023] [Accepted: 12/13/2023] [Indexed: 01/12/2024] Open
Abstract
Anchoringsingle-molecule magnets (SMMs) on the surface of nanostructures is gaining particular interest in the field of molecular magnetism. The accurate organization of SMMs on low-dimensional substrates enables controlled interactions and the possibility of individual molecules' manipulation, paving the route for a broad range of nanotechnological applications. In this comprehensive review article, the most studied types of SMMs are presented, and the quantum-mechanical origin of their magnetic behavior is described. The nanostructured matrices were grouped and characterized to outline to the reader their relevance for subsequent compounding with SMMs. Particular attention was paid to the fact that this process must be carried out in such a way as to preserve the initial functionality and properties of the molecules. Therefore, the work also includes a discussion of issues concerning both the methods of synthesis of the systems in question as well as advanced measurement techniques of the resulting complexes. A great deal of attention was also focused on the issue of surface-molecule interaction, which can affect the magnetic properties of SMMs, causing molecular crystal field distortion or magnetic anisotropy modification, which affects quantum tunneling or magnetic hysteresis, respectively. In our opinion, the analysis of the literature carried out in this way will greatly help the reader to design SMM-nanostructure systems.
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Affiliation(s)
| | | | - Magdalena Laskowska
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Krakow, Poland; (M.A.); (O.P.); (Ł.L.)
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4
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Suryadevara N, Boudalis AK, Olivares Peña JE, Moreno-Pineda E, Fediai A, Wenzel W, Turek P, Ruben M. Molecular-Engineered Biradicals Based on the Y III-Phthalocyanine Platform. J Am Chem Soc 2023; 145:2461-2472. [PMID: 36656167 DOI: 10.1021/jacs.2c11760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A mixed-ligand phthalocyanine/porphyrin yttrium(III) radical double-decker complex (DD) was synthesized using the custom-made 5,10,15-tris(4-methoxyphenyl)-20-(4-((trimethylsilyl)ethynyl)phenyl)porphyrin. The trimethylsilyl functionality was then used to couple two such complexes into biradicals through rigid tethers. Glaser coupling was used to synthesize a short-tethered biradical (C1) and Sonogashira coupling to synthesize longer-tethered ones (C2 and C3). Field-swept echo-detected (FSED), saturation recovery, and spin nutation-pulsed electron paramagnetic resonance experiments revealed marked similarities of the magnetic properties of DD with those of the parent [Y(pc)2]• complex, both in the solid state and in CD2Cl2/CDCl3 4:1 frozen glasses. FSED experiments on the biradicals C2 and C3 revealed a spectral broadening with respect to the spectra of DD and [Y(pc)2]• assigned to the effect of dipolar interactions in solution. Apart from the main resonance, satellite features were also observed, which were simulated with dipole-dipole pairs of shortest distances, suggesting spin delocalization on the organic tether. FSED experiments on C1 yielded spectral line shapes that could not be simulated as the integration of the off-resonance echoes was complicated by field-dependent modulations. While, for all dimers, the on-resonance spin nutation experiments yielded Rabi oscillations of the same frequencies, off-resonance nutations on C1 yielded Rabi oscillations that could be assigned to a MS = -1 to MS = 0 transition within a S = 1 multiplet. The DFT calculations showed that the trans conformation of the complexes was significantly more stable than the cis one and that it induced a marked spin delocalization over the rigid organic tether. This "spin leakage" was most pronounced for the shortest biradical C1.
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Affiliation(s)
- Nithin Suryadevara
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Eggenstein-LeopoldshafenD-76344, Germany.,Institute for Quantum Materials and Technology (IQMT), Karlsruhe Institute of Technology (KIT), Eggenstein-LeopoldshafenD-76344, Germany
| | - Athanassios K Boudalis
- Institute for Quantum Materials and Technology (IQMT), Karlsruhe Institute of Technology (KIT), Eggenstein-LeopoldshafenD-76344, Germany.,Institut de Science et d'Ingénierie Suparamolaiculaires─ISIS, 8 allée Gaspard Monge, BP 70028, Strasbourg CedexF-67083, France.,Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra), Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, StrasbourgF-67081, France
| | - Jorge Enrique Olivares Peña
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Eggenstein-LeopoldshafenD-76344, Germany
| | - Eufemio Moreno-Pineda
- Departamento de Química-Física, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panama0824, Panama
| | - Artem Fediai
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Eggenstein-LeopoldshafenD-76344, Germany
| | - Wolfgang Wenzel
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Eggenstein-LeopoldshafenD-76344, Germany
| | - Philippe Turek
- Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra), Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, StrasbourgF-67081, France
| | - Mario Ruben
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Eggenstein-LeopoldshafenD-76344, Germany.,Institute for Quantum Materials and Technology (IQMT), Karlsruhe Institute of Technology (KIT), Eggenstein-LeopoldshafenD-76344, Germany.,Institut de Science et d'Ingénierie Suparamolaiculaires─ISIS, 8 allée Gaspard Monge, BP 70028, Strasbourg CedexF-67083, France
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5
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Magnetic molecules on surfaces: SMMs and beyond. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Wang TT, Yan H, Che ZW, Sun WB. ZnII-DyIII single-molecule magnets constructed by salen-type ligand, acetate and β-diketonate. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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7
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Redox-Triggered Switching of Conformational State in Triple-Decker Lanthanide Phthalocyaninates. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196498. [PMID: 36235033 PMCID: PMC9571987 DOI: 10.3390/molecules27196498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/24/2022] [Accepted: 09/28/2022] [Indexed: 11/17/2022]
Abstract
Double- and triple-decker lanthanide phthalocyaninates exhibit unique physical-chemical properties, particularly single-molecule magnetism. Among other factors, the magnetic properties of these sandwiches depend on their conformational state, which is determined via the skew angle of the phthalocyanine ligands. Thus, in the present work we report the comprehensive conformational study of substituted terbium(III) and yttrium(III) trisphthalocyaninates in solution depending on the substituents at the periphery of molecules, redox-states and nature of solvents. Conjunction of UV-vis-NIR spectroscopy and quantum-chemical calculations within simplified time-dependent DFT in Tamm-Dancoff approximation provided the spectroscopic signatures of staggered and gauche conformations of trisphthalocyaninates. Altogether, it allowed us to demonstrate that the butoxy-substituted complex behaves as a molecular switcher with controllable conformational state, while the crown-substituted triple-decker complex maintains a staggered conformation regardless of external factors. The analysis of noncovalent interactions within the reduced density gradient approach allowed to shed light on the nature of factors stabilizing certain conformers.
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8
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Singh V, Das D, Anga S, Sutter JP, Chandrasekhar V, Bar AK. Rigid N 3O 2-Pentadentate Ligand-Assisted Octacoordinate Mononuclear Ln(III) Complexes: Syntheses, Characterization, and Slow Magnetization Relaxation. ACS OMEGA 2022; 7:25881-25890. [PMID: 35910178 PMCID: PMC9330846 DOI: 10.1021/acsomega.2c03631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A series of air-stable mononuclear octacoordinate Ln(III) complexes, [(L)Ln(TPPO)3]OTf (Ln = Y (1·Y); Gd (1·Gd); Tb (1·Tb); Dy (1·Dy); Ho (1·Ho); and Er (1·Er)) and [(L)Ln(TPPO)(NO3)] (Ln = Y (2·Y) and Dy (2·Dy)), are synthesized employing a rigid N3O2-pentadentate chelating ligand as the basis ligand and meridional ancillary ligands (where H2L = 2,6-diacetylpyridine bis-benzoylhydrazone, TPPO = triphenylphosphine oxide, and OTf- = trifluoromethanesulfonate). All the complexes are synthesized under aerobic conditions and characterized comprehensively by spectroscopic and X-ray crystallographic techniques. Magnetic property investigation on the polycrystalline solid samples of 1·Ln (Ln = Gd, Tb, Dy, Ho, and Er) and 2·Dy are reported. A field-induced single-molecule magnet behavior was observed for the Dy derivatives. 1·Dy exhibits the highest effective energy barrier of magnetization reversal, U eff/k B = 47 K under H dc = 1 kOe among the complexes presented herein.
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Affiliation(s)
- Vaibhav Singh
- Indian
Institute of Science Education and Research Tirupati, Tirupati 517507 AP, India
| | - Dhiraj Das
- Indian
Institute of Science Education and Research Tirupati, Tirupati 517507 AP, India
| | - Srinivas Anga
- Tata
Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad 500107, India
| | - Jean-Pascal Sutter
- Laboratoire
de Chimie de Coordination Du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse 31062, France
| | | | - Arun Kumar Bar
- Indian
Institute of Science Education and Research Tirupati, Tirupati 517507 AP, India
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Wu DF, Takahashi K, Fujibayashi M, Tsuchiya N, Cosquer G, Huang RK, Xue C, Nishihara S, Nakamura T. Fluoride-bridged dinuclear dysprosium complex showing single-molecule magnetic behavior: supramolecular approach to isolate magnetic molecules. RSC Adv 2022; 12:21280-21286. [PMID: 35975059 PMCID: PMC9344285 DOI: 10.1039/d2ra04119g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 07/20/2022] [Indexed: 11/21/2022] Open
Abstract
Using Na-encapsulated benzo[18]crown-6 (Na)(B18C6) as a counter cation, we successfully magnetically isolated a fluoride-bridging Dy dinuclear complex {[(PW11O39)Dy(H2O)2]2F} (Dy2POM) with lacunary Keggin ligands. (Na)(B18C6) formed two types of tetramers through C-H⋯O, π⋯π and C-H⋯π interactions, and each tetramer aligned in one dimension along the c-axis to form two types of channels. One channel was partially penetrated by a supramolecular cation from the ±a-axis direction, dividing the channel in the form of a "bamboo node". Dy2POM was spatially divided by this "bamboo node," which magnetically isolated one portion from the other. The temperature dependence of the magnetic susceptibility indicated a weak ferromagnetic interaction between the Dy ions bridged by fluoride. Dy2POM exhibited the magnetic relaxation characteristics of a single-molecule magnet, including the dependence of AC magnetic susceptibility on temperature and frequency. Magnetic relaxation can be described by the combination of thermally active Orbach and temperature-independent quantum tunneling processes. The application of a static magnetic field effectively suppressed the relaxation due to quantum tunneling.
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Affiliation(s)
- Dong-Fang Wu
- Graduate School of Environmental Science, Hokkaido University N10W5, Kita-Ward Sapporo Hokkaido 060-0810 Japan
| | - Kiyonori Takahashi
- Graduate School of Environmental Science, Hokkaido University N10W5, Kita-Ward Sapporo Hokkaido 060-0810 Japan .,Research Institute for Electronic Science (RIES), Hokkaido University N20W10, Kita-Ward Sapporo Hokkaido 001-0020 Japan
| | - Masaru Fujibayashi
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-hiroshima Hiroshima 739-8527 Japan
| | - Naoto Tsuchiya
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-hiroshima Hiroshima 739-8527 Japan
| | - Goulven Cosquer
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-hiroshima Hiroshima 739-8527 Japan
| | - Rui-Kang Huang
- Graduate School of Environmental Science, Hokkaido University N10W5, Kita-Ward Sapporo Hokkaido 060-0810 Japan .,Research Institute for Electronic Science (RIES), Hokkaido University N20W10, Kita-Ward Sapporo Hokkaido 001-0020 Japan
| | - Chen Xue
- Graduate School of Environmental Science, Hokkaido University N10W5, Kita-Ward Sapporo Hokkaido 060-0810 Japan .,Research Institute for Electronic Science (RIES), Hokkaido University N20W10, Kita-Ward Sapporo Hokkaido 001-0020 Japan
| | - Sadafumi Nishihara
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-hiroshima Hiroshima 739-8527 Japan.,JST, PRESTO Honcho 4-1-8 Kawaguchi Saitama 332-0012 Japan
| | - Takayoshi Nakamura
- Graduate School of Environmental Science, Hokkaido University N10W5, Kita-Ward Sapporo Hokkaido 060-0810 Japan .,Research Institute for Electronic Science (RIES), Hokkaido University N20W10, Kita-Ward Sapporo Hokkaido 001-0020 Japan
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A tetrairon(III) single-molecule magnet and its solvatomorphs: synthesis, crystal structures and vapor-phase processing. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Wilson BH, Ward JS, Young DC, Liu J, Mathonière C, Clérac R, Kruger PE. Self‐Assembly Synthesis of a [2]Catenane Co
II
Single‐Molecule Magnet. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Benjamin H. Wilson
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical Sciences University of Canterbury Private Bag 4800 Christchurch 8041 New Zealand
- Current address Bernal Institute University of Limerick Limerick V94 T9PX Ireland
| | - Jas S. Ward
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical Sciences University of Canterbury Private Bag 4800 Christchurch 8041 New Zealand
| | - David C. Young
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical Sciences University of Canterbury Private Bag 4800 Christchurch 8041 New Zealand
| | - Jun‐Liang Liu
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031 33600 Pessac France
| | - Corine Mathonière
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031 33600 Pessac France
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031 33600 Pessac France
| | - Paul E. Kruger
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical Sciences University of Canterbury Private Bag 4800 Christchurch 8041 New Zealand
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12
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Martynov AG, Horii Y, Katoh K, Bian Y, Jiang J, Yamashita M, Gorbunova YG. Rare-earth based tetrapyrrolic sandwiches: chemistry, materials and applications. Chem Soc Rev 2022; 51:9262-9339. [DOI: 10.1039/d2cs00559j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review summarises advances in chemistry of tetrapyrrole sandwiches with rare earth elements and highlights the current state of their use in single-molecule magnetism, organic field-effect transistors, conducting materials and nonlinear optics.
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Affiliation(s)
- Alexander G. Martynov
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071, Leninskiy pr., 31, bldg.4, Moscow, Russia
| | - Yoji Horii
- Department of Chemistry, Faculty of Science, Nara Women's University, Nara 630-8506, Japan
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0295, Japan
| | - Yongzhong Bian
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
- Daxing Research Institute, and Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, China
| | - Jianzhuang Jiang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
- Daxing Research Institute, and Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, China
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8578, Japan
| | - Yulia G. Gorbunova
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071, Leninskiy pr., 31, bldg.4, Moscow, Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Leninskiy pr., 31, Moscow, Russia
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13
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Wilson BH, Ward JS, Young DC, Liu JL, Mathonière C, Clérac R, Kruger PE. Self-Assembly Synthesis of a [2]Catenane Co II Single-Molecule Magnet. Angew Chem Int Ed Engl 2021; 61:e202113837. [PMID: 34780082 DOI: 10.1002/anie.202113837] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Indexed: 11/10/2022]
Abstract
We describe herein the self-assembly synthesis of an octanuclear CoII [2]catenane {[Co4 (H2 L)6 ]2 16+ } formed by the mechanical interlocking of two {[Co4 (H2 L)6 ]8+ } rectangles of unprecedented topology. Subtle manipulation of the synthetic conditions allows the isolation of a mixed-valence [Co2 III /Co2 II ]10+ non-catenated rectangle. The CoII centers in the [2]catenane exhibit slow relaxation of their magnetic moment, i. e. single-molecule magnet properties, dominated by quantum tunneling and Raman relaxation processes. This work shows that metallo-supramolecular chemistry can precisely control the organization of single-molecule magnets in topologically complex arrangements.
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Affiliation(s)
- Benjamin H Wilson
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand.,Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Jas S Ward
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand
| | - David C Young
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand
| | - Jun-Liang Liu
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600, Pessac, France
| | - Corine Mathonière
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600, Pessac, France
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600, Pessac, France
| | - Paul E Kruger
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand
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14
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Li X, Liu YH, Zhu GZ, Yang FL, Gao F. Successive syntheses and magnetic properties of homodinuclear lanthanide macrocyclic complexes. Dalton Trans 2021; 50:12215-12225. [PMID: 34396380 DOI: 10.1039/d1dt01514a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of homodinuclear β-diketone lanthanide(III) complexes, formulated as [(acac)4Ln2(L1)] (Ln3+ = Dy3+ (1), Tb3+ (2), and Gd3+ (3), respectively) were first synthesized based on a closed-macrocyclic ligand (H2L1) derived from the [2 + 2] cyclocondensation of 4-tert-butyl-2,6-diformylphenol and o-phenylenediamine in the presence of lanthanide acetylacetonates. Subsequently, by using the above compounds as building blocks to assemble directly with another Schiff base ligand, N,N'-bis(5-chlorosalicylidene)-o-phenylenediamine (H2L2), three new homodinuclear sandwich-type lanthanide complexes with the general formula [Ln2(L1)(L2)2] (Ln3+ = Dy3+ (4), Tb3+ (5), and Gd3+ (6), respectively) were further designed and prepared. Single-crystal X-ray analyses show that the central Ln3+ ion adopts a distorted square antiprism conformation with D4d local symmetry. Magnetic studies reveal ferromagnetic interaction between Dy3+ and Tb3+ centres and zero-field slow relaxation of magnetization for Dy complexes 1 and 4. The corresponding magneto-structural correlations of SMMs 1 and 4 were further discussed by theoretical calculations and with experimental outcomes.
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Affiliation(s)
- Xiang Li
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China.
| | - Yu-Han Liu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China.
| | - Guang-Zhou Zhu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China.
| | - Feng-Lei Yang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China.
| | - Feng Gao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China.
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15
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Horii Y, Damjanović M, Katoh K, Yamashita M. Structural, magnetic and theoretical analyses of anionic and cationic phthalocyaninato-terbium(III) double-decker complexes: magnetic relaxation via higher ligand-field sublevels enhanced by oxidation. Dalton Trans 2021; 50:9719-9724. [PMID: 34227629 DOI: 10.1039/d1dt00775k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Crystal structural and magnetic analyses were performed for the anionic (1-) and cationic (1+) forms of phthalocyaninato-Tb3+ double-decker single-molecule magnets (SMMs). Both charged species showed slow magnetic relaxations and magnetic hysteresis characteristics for SMMs. 1+ showed longer magnetic relaxation times (τ) and higher activation energy for spin reversal (ΔE) than 1- did. Ligand field (LF) splitting calculated using ab initio methods revealed that the experimental ΔE values in 1- and 1+ were considerably larger than the first excited LF levels but rather close to the higher excited ones, indicating the magnetic relaxation via higher excited states.
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Affiliation(s)
- Yoji Horii
- Department of Chemistry, Faculty of Science, Nara Women's University, Nara 630-8506, Japan
| | - Marko Damjanović
- Institute of Inorganic Chemistry, Heidelberg University Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0295, Japan
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan and School of Materials Science and Technology, Nankai University, Tianjin 300350, China
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16
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Yamashita M. Next Generation Multifunctional Nano-Science of Advanced Metal Complexes with Quantum Effect and Nonlinearity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200257] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, P. R. China
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17
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Mulholland KD, Yoon S, Rennie CC, Sitch EK, McKay AI, Edkins K, Edkins RM. Iridium-catalysed 3,5-bis-borylation of phthalonitrile enables access to a family of C 4h octaarylphthalocyanines. Chem Commun (Camb) 2020; 56:8452-8455. [PMID: 32583832 DOI: 10.1039/d0cc03161e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ir-catalysed borylation of phthalonitrile produces both 4-(Bpin)phthalonitrile (1) and 3,5-bis(Bpin)phthalonitrile (2), which are potential divergent intermediates for the synthesis of functionalized phthalocyanines. To exemplify the utility of 2, we have prepared a series of 3,5-bis-arylphthalonitriles that in turn undergo sterically controlled regioselective cyclotetramization to give previously unknown C4h 1,3,8,10,15,17,22,24-octaarylphthalocyanines.
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Affiliation(s)
- Katie D Mulholland
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Sangbin Yoon
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Christopher C Rennie
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - Eleanor K Sitch
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Alasdair I McKay
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - Katharina Edkins
- Division of Pharmacy and Optometry, University of Manchester, Stopford Building, Manchester M13 9PT, UK
| | - Robert M Edkins
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, UK.
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18
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Zou X, Du C, Dong Y, Li G. Slow relaxation of two dimensional salen type lanthanide coordination polymer. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119455] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Cen P, Wang M, Ma X, Chen L, Zhang YQ, Li Y, Tian D, Liu X. Coordination microenvironment perturbed single-ion magnet behavior in a β-diketone Dy( iii) complex. CrystEngComm 2020. [DOI: 10.1039/d0ce00935k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Employing mixed β-diketonate and bpy ligands leads to a mononuclear Dy(iii) SIM, of which the magneto-structural correlation is elucidated by the magnetic and theoretical studies, as well as a comparative study of reported analogues.
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Affiliation(s)
- Peipei Cen
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Meilin Wang
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Xiufang Ma
- 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
| | - Lei Chen
- School of Material Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Yonghong Li
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Danian Tian
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Xiangyu 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
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20
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Sarwar S, Sanz S, van Leusen J, Nichol GS, Brechin EK, Kögerler P. Phthalocyanine-polyoxotungstate lanthanide double deckers. Dalton Trans 2020; 49:16638-16642. [DOI: 10.1039/d0dt03716h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Two archetypal tetradentate ligands with square donor patterns, namely phthalocyanate and monolacunary Keggin-type polyoxotungstate, coordinate to rare earth ions to yield Cs-symmetric heteroleptic double-decker complexes.
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Affiliation(s)
- Sidra Sarwar
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
- Peter Grünberg Institute
| | - Sergio Sanz
- Peter Grünberg Institute
- 52425 Jülich
- Germany
- Jülich-Aachen Research Alliance
- Fundamentals for Future Information Technology (JARA-FIT)
| | - Jan van Leusen
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
| | - Gary S. Nichol
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh
- UK
| | - Euan K. Brechin
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh
- UK
| | - Paul Kögerler
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
- Peter Grünberg Institute
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21
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Swain A, Sarkar A, Rajaraman G. Role of Ab Initio Calculations in the Design and Development of Organometallic Lanthanide-Based Single-Molecule Magnets. Chem Asian J 2019; 14:4056-4073. [PMID: 31557389 DOI: 10.1002/asia.201900828] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 09/23/2019] [Indexed: 11/11/2022]
Abstract
Single-molecule magnets based on lanthanides are very attractive due to their potential applications proposed in the area of microelectronic devices. Very recent advances in this area are due to the blend of conventional lanthanide chemistry with organometallic ligands, and several breakthrough achievements are attained with this combination. Ab initio methods based on multi-reference CASSCF calculations are playing a vital role in the design and development of such molecules. In this minireview, we aim to appraise various contributions in the area of organometallic lanthanide complexes (those containing lanthanide-carbon bonds) and describe how these robust wavefunction-based methods have played a constructive role not only in rationalizing the observed magnetic properties but also proven to be a potential predictive tool with some selected examples.
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Affiliation(s)
- Abinash Swain
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Arup Sarkar
- 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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22
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Prytula‐Kurkunova AY, Pichon C, Duhayon C, Amirkhanov VM, Sutter J. Mononuclear Lanthanide Complexes Containing [O‐O]‐Chelating Sulfonylamidophosphate Type Ligands. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900976] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Angelina Y. Prytula‐Kurkunova
- Department of Chemistry National Taras Shevchenko University of Kyiv 12 Lva Tolstogo str. 01033 Kyiv Ukraine
- LCC‐CNRS Université de Toulouse CNRS 31077 Toulouse France
| | - Céline Pichon
- LCC‐CNRS Université de Toulouse CNRS 31077 Toulouse France
| | - Carine Duhayon
- LCC‐CNRS Université de Toulouse CNRS 31077 Toulouse France
| | - Vladimir M. Amirkhanov
- Department of Chemistry National Taras Shevchenko University of Kyiv 12 Lva Tolstogo str. 01033 Kyiv Ukraine
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23
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Zhi Q, Ma F, Wang C, Chen Y, Wang H, Sun H, Jiang J. Single‐Ion Magnet Investigation of ABAB‐Type Tetrachloro‐ and Tetraalkoxy‐Substituted Bis(phthalocyaninato) Terbium Double‐Decker with
D
2
Symmetrical Ligand Field. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Qianjun Zhi
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of Chemistry University of Science and Technology Beijing Beijing 100083 China
| | - Fang Ma
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials Beijing Normal University Beijing 100875 China
| | - Chiming Wang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of Chemistry University of Science and Technology Beijing Beijing 100083 China
| | - Yuxiang Chen
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of Chemistry University of Science and Technology Beijing Beijing 100083 China
| | - Hailong Wang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of Chemistry University of Science and Technology Beijing Beijing 100083 China
| | - Haoling Sun
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials Beijing Normal University Beijing 100875 China
| | - Jianzhuang Jiang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of Chemistry University of Science and Technology Beijing Beijing 100083 China
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24
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Li H, Meng X, Wang M, Wang Y, Shi W, Cheng P. A {Tb2Fe3} Pyramid Single‐Molecule Magnet with Ferromagnetic Tb‐Fe Interaction. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201800589] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Han Li
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Xixi Meng
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Mengmeng Wang
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Yu‐Xia Wang
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Wei Shi
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Peng Cheng
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
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25
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Yang L, Wang X, Zhu M, Xiao T, Ouyang Z, Bian Y, Wang Z, Jiang J. Ferromagnetic coupling between 4f- and delocalized π-radical spins in mixed (phthalocyaninato)(porphyrinato) rare earth double-decker SMMs. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00595a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Ferromagnetic π–f exchange couplings were revealed in [REIII(Pc)(Por)]0 SMMs (RE = Tb and Dy) by HF-EPR measurements.
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Affiliation(s)
- Liguo Yang
- College of Chemistry and Environmental Engineering
- Anyang Institute of Technology
- Anyang 455000
- China
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
| | - Xin Wang
- College of Chemistry and Environmental Engineering
- Anyang Institute of Technology
- Anyang 455000
- China
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
| | - Mengliang Zhu
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- Department of Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Tongtong Xiao
- Wuhan National High Magnetic Field Center & School of Physics
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Zhongwen Ouyang
- Wuhan National High Magnetic Field Center & School of Physics
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Yongzhong Bian
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- Department of Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center & School of Physics
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Jianzhuang Jiang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- Department of Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
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26
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Gao F, Wang L, Zhu GZ, Liu YH, Yang H, Li X, Yang K. Controllable syntheses and magnetic properties of novel homoleptic triple-decker lanthanide complexes. Dalton Trans 2019; 48:13360-13368. [DOI: 10.1039/c9dt02565k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A class of novel triple-decker lanthanide complexes have been continuously designed and synthesized based on a Schiff base ligand Cl-salphenH2 and precursors [(acac)4Ln2(L)]. The results reveal Dy complex behaves as a typical SMM with intermetallic ferromagnetic interaction.
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Affiliation(s)
- Feng Gao
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Lei Wang
- School of Environmental Science and Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Guang-Zhou Zhu
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Yu-Han Liu
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Han Yang
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Xiang Li
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Ke Yang
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
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27
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Dey A, Kalita P, Chandrasekhar V. Lanthanide(III)-Based Single-Ion Magnets. ACS OMEGA 2018; 3:9462-9475. [PMID: 31459081 PMCID: PMC6644820 DOI: 10.1021/acsomega.8b01204] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/03/2018] [Indexed: 05/27/2023]
Abstract
Mononuclear lanthanide-based single-ion magnets (SIMs) are known since 2003 with the discovery of SIM properties in a bis-(phthalocyaninato)lanthanide complex. A recent report on [Dy(Cpttt)2][BC6F5] indicating that it exhibits the highest known blocking temperature (60 K) has spurred fresh interest in this area. In this article, we discuss about the various requirements of lanthanide-based SIMs along with representative examples. Specifically, we describe the complexes whose coordination numbers vary from 2 to 8. We also discuss the representative examples of organometallic lanthanide complexes that can function as molecular magnets.
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Affiliation(s)
- Atanu Dey
- Tata
Institute of Fundamental Research Hyderabad, Hyderabad 500107, India
| | - Pankaj Kalita
- School
of Chemical Sciences, National Institute of Science Education and
Research, HBNI, Bhubaneswar 752050, India
| | - Vadapalli Chandrasekhar
- Tata
Institute of Fundamental Research Hyderabad, Hyderabad 500107, India
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur 208016, India
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28
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Gao F, Zhang YQ, Sun W, Liu H, Chen X. Syntheses, structures and magnetic properties of macrocyclic Schiff base-supported homodinuclear lanthanide complexes. Dalton Trans 2018; 47:11696-11704. [PMID: 30101952 DOI: 10.1039/c8dt02243g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Five new homodinuclear lanthanide complexes with the general formula [(acac)4Ln2(L)] (Ln3+ = Dy3+ (1), Tb3+ (2), Ho3+ (3), Er3+ (4), and Gd (5)) were synthesized by one-pot [2 + 2] condensation of 2,6-diformyl-4-methylphenol and 1,3-diaminopropane in the presence of various lanthanide acetylacetonates. The eight-coordinate Ln(iii) centre adopts a slightly distorted square antiprism geometry with D4d symmetry. Theoretical analysis and magnetic measurements reveal that the corresponding Dy complex 1 exhibits slow magnetic relaxation behavior, characteristic of a typical SMM with the intramolecular ferromagnetic Dy3+Dy3+ interaction.
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Affiliation(s)
- Feng Gao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China.
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29
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Affiliation(s)
- Alejandro V. Funes
- Departamento de Química Inorgánica; Analítica y Química Física/ INQUIMAE (CONICET); Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires; Pabellón 2, Ciudad Universitaria C1428EHA Buenos Aires Argentina
| | - Pablo Alborés
- Departamento de Química Inorgánica; Analítica y Química Física/ INQUIMAE (CONICET); Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires; Pabellón 2, Ciudad Universitaria C1428EHA Buenos Aires Argentina
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30
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Polyzou CD, Koumousi ES, Lada ZG, Raptopoulou CP, Psycharis V, Rouzières M, Tsipis AC, Mathonière C, Clérac R, Perlepes SP. "Switching on" the single-molecule magnet properties within a series of dinuclear cobalt(iii)-dysprosium(iii) 2-pyridyloximate complexes. Dalton Trans 2018; 46:14812-14825. [PMID: 29038805 DOI: 10.1039/c7dt02717f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The use of 2-pyridinealdoxime (paoH), methyl 2-pyridyl ketone oxime (mepaoH), phenyl 2-pyridyl ketone oxime (phpaoH) and pyridine-2-amidoxime (NH2paoH) for the synthesis of dinuclear CoIII/DyIII complexes is described in the absence or presence of an external base. Complexes [CoDy(pao)3(NO3)3] (1), [CoDy(mepao)3(NO3)3] (2), [CoDy(phpao)3(NO3)3] (3) and [CoDy(NH2pao)3(NO3)3]·3MeOH (4·3MeOH) have been isolated and their structures have been determined by single-crystal X-ray crystallography. The complexes crystallize in non-centrosymmetric (2, 3) or centrosymmetric (1, 4·3MeOH) trigonal space groups and form a family of triply-oximate bridged dinuclear Co(iii)-Dy(iii) complexes. The crystals of 1, 3 and 4·3MeOH contain mixtures of Δ and Λ enantiomers, whereas complex 2 is enantiomerically pure (Λ). A 3-fold crystallographic axis (C3) passes through two metal ions in all complexes. The low-spin CoIII and DyIII ions are bridged by three oximate groups belonging to the η1:η1:η1:μ 2-pyridyloximate ligands. The CoIII centre is octahedrally coordinated by the six nitrogen atoms of the deprotonated organic ligands in a facial arrangement. The DyIII centre is bound to an O9 set of donor atoms, its coordination sphere being completed by three bidentate chelating nitrato groups. The coordination polyhedron around DyIII in 1 is best described as the Johnson tricapped trigonal prism, while the coordination geometries of the DyIII centres in 2, 3 and 4·3MeOH are best described as consisting of spherical tricapped trigonal prismatic coordination polyhedra. The spectroscopic data of the complexes are also reported and discussed in the infra-red region in terms of the coordination modes of the ligands involved. The magnetic properties of these complexes were studied between 300 and 1.8 K revealing mainly the depopulation of the DyIIImj sublevels of the ground 6H15/2 state. The intrinsic magnetic anisotropy of the DyIII centers is clearly observed by the non-superimposed magnetization (M) versus H/T data, but single-molecule magnet (SMM) properties were detected only for the mepao--containing complex 2. The origin of these properties in 2 is critically discussed and supported by computational studies.
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Affiliation(s)
- C D Polyzou
- Department of Chemistry, University of Patras, 265 04 Patras, Greece.
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31
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Chen Y, Ma F, Zhang Y, Zhao L, Wang K, Qi D, Sun HL, Jiang J. Heteroleptic chiral bis(phthalocyaninato) terbium double-decker single-ion magnets. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00493e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Chiral binaphthyl and dibutylamino were incorporated onto the periphery of the bis(phthalocyaninato) terbium SIM, confirming the effectiveness of tuning the double-decker SIM peroperties thorugh tuning the molecular magnetic anisotropy.
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Affiliation(s)
- Yuxiang Chen
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- Department of Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Fang Ma
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials
- Beijing Normal University
- Beijing 100875
- China
| | - Yuehong Zhang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- Department of Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Luyang Zhao
- National Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Kang Wang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- Department of Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Dongdong Qi
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- Department of Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Hao-Ling Sun
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials
- Beijing Normal University
- Beijing 100875
- China
| | - Jianzhuang Jiang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- Department of Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
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32
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McAdams SG, Ariciu AM, Kostopoulos AK, Walsh JP, Tuna F. Molecular single-ion magnets based on lanthanides and actinides: Design considerations and new advances in the context of quantum technologies. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.015] [Citation(s) in RCA: 222] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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The influence of correlation effects on the electronic structure of double-decker bis(phthalocyaninato)-Dy, Tb complexes. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.04.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Yamabayashi T, Katoh K, Breedlove BK, Yamashita M. Molecular Orientation of a Terbium(III)-Phthalocyaninato Double-Decker Complex for Effective Suppression of Quantum Tunneling of the Magnetization. Molecules 2017; 22:molecules22060999. [PMID: 28617317 PMCID: PMC6152734 DOI: 10.3390/molecules22060999] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 06/09/2017] [Accepted: 06/12/2017] [Indexed: 11/22/2022] Open
Abstract
Single-molecule magnet (SMM) properties of crystals of a terbium(III)-phthalocyaninato double-decker complex with different molecular packings (1: TbPc2, 2: TbPc2·CH2Cl2) were studied to elucidate the relationship between the molecular packing and SMM properties. From single crystal X-ray analyses, the high symmetry of the coordination environment of 2 suggested that the SMM properties were improved. Furthermore, the shorter intermolecular Tb–Tb distance and relative collinear alignment of the magnetic dipole in 2 indicated that the magnetic dipole–dipole interactions were stronger than those in 1. This was confirmed by using direct current magnetic measurements. From alternating current magnetic measurements, the activation energy for spin reversal for 1 and 2 were similar. However, the relaxation time for 2 is three orders of magnitude slower than that for 1 in the low-T region due to effective suppression of the quantum tunneling of the magnetization. These results suggest that the SMM properties of TbPc2 highly depend on the molecular packing.
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Affiliation(s)
- Tsutomu Yamabayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
| | - Brian K Breedlove
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
- WPI Research Center, Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, China.
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35
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Kawasaki K, Sugiyama R, Tsuji T, Iwasa T, Tsunoyama H, Mizuhata Y, Tokitoh N, Nakajima A. A designer ligand field for blue-green luminescence of organoeuropium(ii) sandwich complexes with cyclononatetraenyl ligands. Chem Commun (Camb) 2017; 53:6557-6560. [PMID: 28524187 DOI: 10.1039/c7cc03045b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel η9-coordinated double-decker sandwich complex of divalent europium is synthesized. The complex exhibits blue-green photoluminescence at 516 nm, which is significantly blue-shifted from those of other organoeuropium(ii) sandwich complexes (∼630 nm). The blue-shift was quantitatively explained by the weakened electrostatic field of the expanded 10-π ring.
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Affiliation(s)
- Kenshiro Kawasaki
- Department of Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
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36
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Nemec I, Herchel R, Machata M, Trávníček Z. Tetranuclear Ni(ii) and Co(ii) Schiff-base complexes with an M4O6 defective dicubane-like core: zero-field SMM behavior in the cobalt analogue. NEW J CHEM 2017. [DOI: 10.1039/c7nj02281f] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two tetranuclear Ni4 and Co4 complexes were prepared and characterized. Their magnetic properties were thoroughly studied and it was revealed that the Co4 compound behaves as a zero-field single-molecule magnet.
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Affiliation(s)
- Ivan Nemec
- Department of Inorganic Chemistry
- Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-771 46 Olomouc
| | - Radovan Herchel
- Department of Inorganic Chemistry
- Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-771 46 Olomouc
| | - Marek Machata
- Department of Inorganic Chemistry
- Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-771 46 Olomouc
| | - Zdeněk Trávníček
- Department of Inorganic Chemistry
- Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-771 46 Olomouc
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37
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Chen Y, Ma F, Chen X, Dong B, Wang K, Jiang S, Wang C, Chen X, Qi D, Sun H, Wang B, Gao S, Jiang J. Novel bis(phthalocyaninato) rare earth complexes with the bulky and strong electron-donating dibutylamino groups: synthesis, spectroscopy, and SMM properties. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00332c] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dibutylamino groups were incorporated onto the bis(phthalocyaninato) terbium, leading to excellent SIM performance.
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38
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Gao F, Yang FL, Feng X, Xu H, Sun W, Liu H, Li XL. Half-sandwich lanthanide crown ether complexes with the slow relaxation of magnetization and photoluminescence behaviors. Dalton Trans 2017; 46:1317-1323. [DOI: 10.1039/c6dt04353d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Four half-sandwich lanthanide crown ether complexes were successfully synthesized and structurally characterized. Dysprosium complexes show both the slow relaxation of magnetization and photoluminescence behaviors.
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Affiliation(s)
- Feng Gao
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Feng-Lei Yang
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Xiaowan Feng
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Huimin Xu
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Wang Sun
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Huan Liu
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Xiu-Ling Li
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
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39
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Zheng Y, Huang L, Zhang Z, Jiang J, Wang K, Peng LM, Yu G. Sensitivity enhancement of graphene Hall sensors modified by single-molecule magnets at room temperature. RSC Adv 2017. [DOI: 10.1039/c6ra27673c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Sensitivity of graphene Hall sensors was enhanced by modifying single-molecule magnets with excellent linearity, off voltage, repeatability and stability.
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Affiliation(s)
- Yuanhui Zheng
- Beijing National Laboratory for Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Le Huang
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- P. R. China
| | - Zhiyong Zhang
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- P. R. China
| | - Jianzhuang Jiang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- Department of Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Kaiyou Wang
- SKLSM
- Institute of Semiconductors Chinese Academy of Sciences
- Beijing 100083
- P. R. China
| | - Lian-Mao Peng
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- P. R. China
| | - Gui Yu
- Beijing National Laboratory for Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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40
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Mixed (phthalocyaninato)(tetranaphthylporphyrinato) terbium triple-decker complex: Synthesis, crystal structure and magnetic properties. INORG CHEM COMMUN 2016. [DOI: 10.1016/j.inoche.2016.09.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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Bao DX, Xiang S, Wang J, Li YC, Zhao XQ. Review: Single-molecule magnets based on pyridine alcohol ligands. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1231301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Dong-Xu Bao
- College of Science, Sichuan Agricultural University, Ya’an, PR China
| | - Shuo Xiang
- College of Science, Sichuan Agricultural University, Ya’an, PR China
| | - Jin Wang
- College of Science, Sichuan Agricultural University, Ya’an, PR China
| | - Yun-Chun Li
- College of Science, Sichuan Agricultural University, Ya’an, PR China
| | - Xiao-Qing Zhao
- College of Science, Sichuan Agricultural University, Ya’an, PR China
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42
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Vinslava A, Tasiopoulos AJ, Wernsdorfer W, Abboud KA, Christou G. Molecules at the Quantum-Classical Nanoparticle Interface: Giant Mn70 Single-Molecule Magnets of ∼4 nm Diameter. Inorg Chem 2016; 55:3419-30. [PMID: 26859234 DOI: 10.1021/acs.inorgchem.5b02790] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two Mn70 torus-like molecules have been obtained from the alcoholysis in EtOH and 2-ClC2H4OH of [Mn12O12(O2CMe)16(H2O)4]·4H2O·2MeCO2H (1) in the presence of NBu(n)4MnO4 and an excess of MeCO2H. The reaction in EtOH afforded [Mn70O60(O2CMe)70(OEt)20(EtOH)16(H2O)22] (2), whereas the reaction in ClC2H4OH gave [Mn70O60(O2CMe)70(OC2H4Cl)20(ClC2H4OH)18(H2O)22] (3). The complexes are nearly isostructural, each possessing a Mn70 torus structure consisting of alternating near-linear [Mn3(μ3-O)4] and cubic [Mn4(μ3-O)2(μ3-OR)2] (R = OEt, 2; R = OC2H4Cl, 3) subunits, linked together via syn,syn-μ-bridging MeCO2(-) and μ3-bridging O(2-) groups. 2 and 3 have an overall diameter of ∼4 nm and crystallize as highly ordered supramolecular nanotubes. Alternating current (ac) magnetic susceptibility measurements, performed on microcrystalline samples in the 1.8-10 K range and a 3.5 G ac field with oscillation frequencies in the 5-1500 Hz range, revealed frequency-dependent out-of-phase signals below ∼2.4 K for both molecules indicative of the slow magnetization relaxation of single-molecule magnets (SMMs). Single-crystal, magnetization vs field studies on both complexes revealed hysteresis loops below 1.5 K, thus confirming 2 and 3 to be new SMMs. The hysteresis loops do not show the steps that are characteristic of quantum tunneling of magnetization (QTM). However, low-temperature studies revealed temperature-independent relaxation rates below ∼0.2 K for both compounds, the signature of ground state QTM. Fitting of relaxation data to the Arrhenius equation gave effective barriers for magnetization reversal (Ueff) of 23 and 18 K for 2 and 3, respectively. Because the Mn70 molecule is close to the classical limit, it was also studied using a method based on the Néel-Brown model of thermally activated magnetization reversal in a classical single-domain magnetic nanoparticle. The field and sweep-rate dependence of the coercive field was investigated and yielded the energy barrier, the spin, the Arrhenius pre-exponential, and the cross-over temperature from the classical to the quantum regime. The validity of this approach emphasizes that large SMMs can be considered as being at or near the quantum-classical nanoparticle interface.
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Affiliation(s)
- Alina Vinslava
- Department of Chemistry, University of Florida , Gainesville, Florida 32611, United States
| | | | - Wolfgang Wernsdorfer
- Institut Néel-CNRS and University Grenoble Alpes , F-38000 Grenoble, Cedex 9, France
| | - Khalil A Abboud
- Department of Chemistry, University of Florida , Gainesville, Florida 32611, United States
| | - George Christou
- Department of Chemistry, University of Florida , Gainesville, Florida 32611, United States
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43
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Katoh K, Breedlove BK, Yamashita M. Symmetry of octa-coordination environment has a substantial influence on dinuclear Tb III triple-decker single-molecule magnets. Chem Sci 2016; 7:4329-4340. [PMID: 30155079 PMCID: PMC6013818 DOI: 10.1039/c5sc04669f] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 03/07/2016] [Indexed: 11/21/2022] Open
Abstract
This work shows that the SMM properties can be fine-tuned by introducing different octa-coordination geometries while maintaining the same TbIII–TbIII distances.
Single-molecule magnet (SMM) properties of terbium(iii)-phthalocyaninato and porphyrinato mixed ligand triple-decker complexes, [(TTP)Tb(Pc)Tb(TTP)] (1) and [(Pc)Tb(Pc)Tb(TTP)] type (2), were studied and were compared with those of the TbIII homoleptic triple-decker complex [(obPc)Tb(obPc)Tb(obPc)] (3) in order to elucidate the relationship between octa-coordination environments and SMM properties (TbIII = terbium(iii), TTP2– = tetraphenylporphyrinato, Pc2– = phthalocyaninato, obPc2– = 2,3,9,10,16,17,23,24-octabutoxyphthalocyaninato). By combining TTP2– and Pc2– with TbIII ions, it is possible to make three octa-coordination environments: SP–SP, SAP–SP and SAP–SAP sites, where SAP is square-antiprismatic and SP is square-prismatic. The direction and magnitude of the ligand field (LF) strongly affect the magnetic properties. Complexes 2 and 3, which have SAP–SAP sites, undergo dual magnetic relaxation processes in the low temperature region in a direct current magnetic field. On the other hand, 1, which has an SP–SP environment, undergoes a single magnetic relaxation process, indicating that the octa-coordination environments strongly influence the SMM properties. The SMM behaviour of dinuclear TbIII SMMs 1–3 were explained by using X-ray crystallography and static and dynamic susceptibility measurements. This work shows that the SMM properties can be fine-tuned by introducing different octa-coordination geometries with the same TbIII–TbIII distances.
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Affiliation(s)
- Keiichi Katoh
- Department of Chemistry , Graduate School of Science , Tohoku University , 6-3 Aramaki Aza Aoba, Aoba-ku , Sendai , Miyagi 980-8578 , Japan .
| | - Brian K Breedlove
- Department of Chemistry , Graduate School of Science , Tohoku University , 6-3 Aramaki Aza Aoba, Aoba-ku , Sendai , Miyagi 980-8578 , Japan .
| | - Masahiro Yamashita
- Department of Chemistry , Graduate School of Science , Tohoku University , 6-3 Aramaki Aza Aoba, Aoba-ku , Sendai , Miyagi 980-8578 , Japan .
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44
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Katoh K, Komeda T, Yamashita M. The Frontier of Molecular Spintronics Based on Multiple-Decker Phthalocyaninato TbIIISingle-Molecule Magnets. CHEM REC 2016; 16:987-1016. [DOI: 10.1002/tcr.201500290] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Keiichi Katoh
- Department of Chemistry Graduate School of Science; Tohoku University; 6-3, Aramaki-Aza-Aoba Aoba-Ku Sendai 980-8578 Japan
| | - Tadahiro Komeda
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen)Tohoku University; 22-1-1, Katahira Aoba-Ku Sendai 980-0877 (Japan)E-mail: Additional Supporting Information may be found in the online version of this article
| | - Masahiro Yamashita
- Department of Chemistry Graduate School of Science; Tohoku University; 6-3, Aramaki-Aza-Aoba Aoba-Ku Sendai 980-8578 Japan
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45
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Kariaka NS, Rusanova JA, Smola SS, Kolotilov SV, Znovjyak KO, Weselski M, Sliva TY, Amirkhanov VM. First examples of carbacylamidophosphate pentanuclear hydroxo-complexes: Synthesis, structure, luminescence and magnetic properties. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.12.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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46
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Chorazy S, Rams M, Hoczek A, Czarnecki B, Sieklucka B, Ohkoshi SI, Podgajny R. Structural anisotropy of cyanido-bridged {CoII9WV6} single-molecule magnets induced by bidentate ligands: towards the rational enhancement of an energy barrier. Chem Commun (Camb) 2016; 52:4772-5. [DOI: 10.1039/c5cc10371a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
{CoII9[WV(CN)8]6} clusters capped by odd and even number of bidentate ligands reveal the improved slow magnetic relaxation due to the significant structural anisotropy.
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Affiliation(s)
- Szymon Chorazy
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Krakow
- Poland
- Department of Chemistry
| | - Michał Rams
- Institute of Physics
- Jagiellonian University
- 30-348 Krakow
- Poland
| | - Anna Hoczek
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Krakow
- Poland
| | | | | | - Shin-ichi Ohkoshi
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Robert Podgajny
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Krakow
- Poland
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47
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Single-molecule magnetism of tetrapyrrole lanthanide compounds with sandwich multiple-decker structures. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.07.004] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Gao F, Feng X, Yang L, Chen X. New sandwich-type lanthanide complexes based on closed-macrocyclic Schiff base and phthalocyanine molecules. Dalton Trans 2016; 45:7476-82. [DOI: 10.1039/c6dt00683c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Two new sandwich-type lanthanide complexes simultaneously containing closed-macrocyclic Schiff base and phthalocyanine molecules were synthesized and structurally characterized. The magnetic studies reveal the corresponding dysprosium complex behaves as a typical SMM.
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Affiliation(s)
- Feng Gao
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Xiaowan Feng
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Liu Yang
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Xiaoyu Chen
- School of Safety
- China University of Mining and Technology
- Xuzhou 221116
- P. R. China
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Nguyen TN, Wernsdorfer W, Shiddiq M, Abboud KA, Hill S, Christou G. Supramolecular aggregates of single-molecule magnets: exchange-biased quantum tunneling of magnetization in a rectangular [Mn 3] 4 tetramer. Chem Sci 2015; 7:1156-1173. [PMID: 29896376 PMCID: PMC5952871 DOI: 10.1039/c5sc02599k] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 11/01/2015] [Indexed: 11/22/2022] Open
Abstract
Exchange-biased QTM within a magnetically-supramolecular tetramer of Mn3 single-molecule magnets with spin S = 6 has been analyzed.
The syntheses and properties of four magnetically-supramolecular oligomers of triangular Mn3 units are reported: dimeric [Mn6O2(O2CMe)8(CH3OH)2(pdpd)2] (3) and [Mn6O2(O2CMe)8(py)2(pdpd)2](ClO4)2 (4), and tetrameric [Mn12O4(O2CR)12(pdpd)6](ClO4)4 (R = Me (5), tBu (6)). They were all obtained employing 3-phenyl-1,5-di(pyridin-2-yl)pentane-1,5-dione dioxime (pdpdH2), either in direct synthesis reactions involving oxidation of MnII salts or in metathesis reactions with the preformed complex [Mn3O(O2CMe)6(py)3](ClO4) (1); complex 6 was then obtained by carboxylate substitution on complex 5. Complexes 3 and 4 contain two [MnIII2MnII(μ3-O)]6+ and [MnIII3(μ3-O)]7+ units, respectively, linked by two pdpd2– groups. Complexes 5 and 6 contain four [MnIII3(μ3-O)]7+ units linked by six pdpd2– groups into a rectangular tetramer [MnIII3]4. Solid-state dc magnetic susceptibility studies showed that the Mn3 subunits in 3 and 4 have a ground-state spin of S = 3/2 and S = 2, respectively, while the Mn3 subunits in 5 and 6 possess an S = 6 ground state. Complexes 5 and 6 exhibit frequency-dependent out-of-phase (χ′′M) ac susceptibility signals indicating 5 and 6 to be tetramers of Mn3 single-molecule magnets (SMMs). High-frequency EPR studies of a microcrystalline powder sample of 5·2CH2Cl2 provided precise spin Hamiltonian parameters of D = –0.33 cm–1, |E| = 0.03 cm–1, B04 = –8.0 × 10–5 cm–1, and g = 2.0. Magnetization vs. dc field sweeps on a single crystal of 5·xCH2Cl2 gave hysteresis loops below 1 K that exhibit exchange-biased quantum tunneling of magnetization (QTM) steps with a bias field of 0.19 T. Simulation of the loops determined that each Mn3 unit is exchange-coupled to the two neighbors linked to it by the pdpd2– linkers, with an antiferromagnetic inter-Mn3 exchange interaction of J/kB = –0.011 K (Ĥ = –2Jŝi·ŝj convention). The work demonstrates a rational approach to synthesizing magnetically-supramolecular aggregates of SMMs as potential multi-qubit systems for quantum computing.
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Affiliation(s)
- Tu N Nguyen
- Department of Chemistry , University of Florida , Gainesville , Florida 32611-7200 , USA .
| | | | - Muhandis Shiddiq
- National High Magnetic Field Laboratory and Department of Physics , Florida State University , Tallahassee , Florida 32310 , USA
| | - Khalil A Abboud
- Department of Chemistry , University of Florida , Gainesville , Florida 32611-7200 , USA .
| | - Stephen Hill
- National High Magnetic Field Laboratory and Department of Physics , Florida State University , Tallahassee , Florida 32310 , USA
| | - George Christou
- Department of Chemistry , University of Florida , Gainesville , Florida 32611-7200 , USA .
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Ligand π-Radical Interaction with f-Shell Unpaired Electrons in Phthalocyaninato-Lanthanoid Single-Molecule Magnets: A Solution NMR Spectroscopic and DFT Study. Chemistry 2015; 21:14421-32. [DOI: 10.1002/chem.201501944] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Indexed: 12/31/2022]
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