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Moorthy S, Tarannum I, Kumari K, Singh SK. A highly anisotropic family of hexagonal bipyramidal Dy(III) unsaturated 18-crown-6 complexes exceeding the blockade barrier over 2700 K: a computational exploration. Dalton Trans 2024. [PMID: 38787652 DOI: 10.1039/d4dt00632a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
In the present work, we have explored a series of unsaturated hexa-18-crown-6 (U18C6) ligands towards designing highly anisotropic Dy(III) based single-ion magnets (SIMs) with the general formula [Dy(U18C6)X2]+ (where U18C6 = [C12H12O6] (1), [C12H12S6] (2), [C12H12Se6] (3), [C12H12O4S2] (4), [C12H12O4Se2] (5) and X = F, Cl, Br, I, OtBu and OSiPh3). By analysing the electronic structure, bonding and magnetic properties, we find that the U18C6 ligands prefer stabilising the highly symmetric eight-coordinated hexagonal bipyramidal geometry (HBPY-8), which is the source of the near-Ising type anisotropy in all the [Dy(U18C6)X2]+ complexes. Moreover, the ability of sulfur/selenium substituted U18C6 ligands to stabilize the highly anisotropic HBPY-8 geometry makes them more promising towards engineering the equatorial ligand field compared to substituted saturated 18C6 ligands where the exodentate arrangement of the S lone pairs results in low symmetry. Magnetic relaxation analysis predicts a record barrier height over 2700 K for [Dy(C12H12O6)F2]+ and [Dy(C12H12S6)X2]+ (where X = F, OtBu and OSiPh3) complexes, nearly 23% higher than those of the top performing Dy(III) based SIMs in the literature.
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Affiliation(s)
- Shruti Moorthy
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy, Telangana, 502284, India.
| | - Ibtesham Tarannum
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy, Telangana, 502284, India.
| | - Kusum Kumari
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy, Telangana, 502284, India.
| | - Saurabh Kumar Singh
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy, Telangana, 502284, India.
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2
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Xu W, Luo Q, Li Z, Zhai Y, Zheng Y. Bis-Alkoxide Dysprosium(III) Crown Ether Complexes Exhibit Tunable Air Stability and Record Energy Barrier. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308548. [PMID: 38400593 PMCID: PMC11077650 DOI: 10.1002/advs.202308548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/16/2024] [Indexed: 02/25/2024]
Abstract
High-performance and air-stable single-molecule magnets (SMMs) can offer great convenience for the fabrication of information storage devices. However, the controversial requisition of high stability and magnetic axiality is hard to balance for lanthanide-based SMMs. Here, a family of dysprosium(III) crown ether complexes possessing hexagonal-bipyramidal (pseudo-D6h symmetry) local coordination geometry with tunable air stability and effective energy barrier for magnetization reversal (Ueff) are shown. The three complexes share the common formula of [Dy(18-C-6)L2][I3] (18-C-6 = 1,4,7,10,13,16-hexaoxacyclooctadecane; L = I, 1; L = OtBu 2 and L = 1-AdO 3). 1 is highly unstable in the air. 2 can survive in the air for a few minutes, while 3 remains unchanged in the air for more than 1 week. This is roughly in accordance with the percentage of buried volumes of the axial ligands. More strikingly, 2 and 3 show progressive enhancement of Ueff and 3 exhibits a record high Ueff of 2427(19) K, which significantly contributes to the 100 s blocking temperature up to 11 K for Yttrium-diluted sample, setting a new benchmark for solid-state air-stable SMMs.
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Affiliation(s)
- Wen‐Jie Xu
- Department of Hepatobiliary Surgery and Institute of Advanced Surgical Technology and EngineeringThe First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxi710061P. R. China
- Frontier Institute of Science and Technology (FIST)State Key Laboratory of Electrical Insulation and Power EquipmentMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi'an Key Laboratory of Electronic Devices and Material Chemistry, and School of ChemistryXi'an Jiaotong UniversityXi'anShaanxi710054P. R. China
| | - Qian‐Cheng Luo
- Department of Hepatobiliary Surgery and Institute of Advanced Surgical Technology and EngineeringThe First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxi710061P. R. China
- Frontier Institute of Science and Technology (FIST)State Key Laboratory of Electrical Insulation and Power EquipmentMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi'an Key Laboratory of Electronic Devices and Material Chemistry, and School of ChemistryXi'an Jiaotong UniversityXi'anShaanxi710054P. R. China
| | - Zi‐Han Li
- Department of Hepatobiliary Surgery and Institute of Advanced Surgical Technology and EngineeringThe First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxi710061P. R. China
- Frontier Institute of Science and Technology (FIST)State Key Laboratory of Electrical Insulation and Power EquipmentMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi'an Key Laboratory of Electronic Devices and Material Chemistry, and School of ChemistryXi'an Jiaotong UniversityXi'anShaanxi710054P. R. China
| | - Yuan‐Qi Zhai
- Department of Hepatobiliary Surgery and Institute of Advanced Surgical Technology and EngineeringThe First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxi710061P. R. China
- Frontier Institute of Science and Technology (FIST)State Key Laboratory of Electrical Insulation and Power EquipmentMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi'an Key Laboratory of Electronic Devices and Material Chemistry, and School of ChemistryXi'an Jiaotong UniversityXi'anShaanxi710054P. R. China
| | - Yan‐Zhen Zheng
- Department of Hepatobiliary Surgery and Institute of Advanced Surgical Technology and EngineeringThe First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxi710061P. R. China
- Frontier Institute of Science and Technology (FIST)State Key Laboratory of Electrical Insulation and Power EquipmentMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi'an Key Laboratory of Electronic Devices and Material Chemistry, and School of ChemistryXi'an Jiaotong UniversityXi'anShaanxi710054P. R. China
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3
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Borah A, Dey S, Gupta SK, Rajaraman G, Murugavel R. Field-induced SIM behaviour in early lanthanide(III) organophosphates containing 18-crown-6. Dalton Trans 2023. [PMID: 37317701 DOI: 10.1039/d3dt01206a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Single-ion magnets (SIMs) have attracted wide attention in recent years. Despite tremendous progress in late lanthanide SIMs, reports on early lanthanides exhibiting SIM characteristics are scarce. A series of five novel 18-crown-6 encapsulated mononuclear early lanthanide(III) organophosphates, [{(18-crown-6)Ln(dippH)3}{(18-crown-6)Ln(dippH)2(dippH2)}]·[I3] [Ln = Ce (1), Pr (2), Nd (3)] and [{Ln(18-crown-6)(dippH)2(H2O)}·{I3}] [Ln = Sm (4) and Eu (5)], have been synthesised in the present study. 18-crown-6 coordinates to Ln(III) ions in an equatorial position while the axial positions are occupied by either three phosphate moieties as in 1-3 or two phosphate moieties and one water molecule as in 4 and 5, resulting in a muffin-shaped coordination geometry around the Ln(III) centres. Magnetic susceptibility measurements reveal that Ce and Nd complexes are field-induced single-ion magnets with significant barrier heights. Furthermore, the ab initio CASSCF/RASSI-SO/SINGLE_ANISO calculations on complexes 1 and 3 reveal significant QTM in the ground state rationalising the field-induced single-ion magnetism behaviour of these complexes.
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Affiliation(s)
- Aditya Borah
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
| | - Sandeep K Gupta
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
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4
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Observation of field-induced single-molecule magnet behavior in an octahedrally coordinated binuclear Co2 compound. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Synthesis, structure, fluorescence and thermochemical properties of the lanthanide complexes of 2-chloro-6-fluorobenzoic acid and 2,2′:6′2″-tripyridine ligands. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Gil Y, Castro-Alvarez A, Fuentealba P, Spodine E, Aravena D. Lanthanide SMMs Based on Belt Macrocycles: Recent Advances and General Trends. Chemistry 2022; 28:e202200336. [PMID: 35648577 DOI: 10.1002/chem.202200336] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Indexed: 11/06/2022]
Abstract
Enhancement of axial magnetic anisotropy is the central objective to push forward the performance of Single-Molecule Magnet (SMM) complexes. In the case of mononuclear lanthanide complexes, the chemical environment around the paramagnetic ion must be tuned to place strongly interacting ligands along either the axial positions or the equatorial plane, depending on the oblate or prolate preference of the selected lanthanide. One classical strategy to achieve a precise chemical environment for a metal centre is using highly structured, chelating ligands. A natural approach for axial-equatorial control is the employment of macrocycles acting in a belt conformation, providing the equatorial coordination environment, and leaving room for axial ligands. In this review, we present a survey of SMMs based on the macrocycle belt motif. Literature systems are divided in three families (crown ether, Schiff-base and metallacrown) and their general properties in terms of structural stability and SMM performance are briefly discussed.
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Affiliation(s)
- Yolimar Gil
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago, Chile.,Centro para la Nanociencia y Nanotecnología (CEDENNA), Santiago, Estación Central, Región Metropolitana, Chile
| | - Alejandro Castro-Alvarez
- Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, Correo 33, Santiago, Chile
| | - Pablo Fuentealba
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago, Chile
| | - Evgenia Spodine
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago, Chile.,Centro para la Nanociencia y Nanotecnología (CEDENNA), Santiago, Estación Central, Región Metropolitana, Chile
| | - Daniel Aravena
- Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, Correo 33, Santiago, Chile
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7
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Ahmed N, Ansari KU. Zero-field slow magnetic relaxation behavior of Zn 2Dy in a family of trinuclear near-linear Zn 2Ln complexes: synthesis, experimental and theoretical investigations. Dalton Trans 2022; 51:8766-8776. [PMID: 35615914 DOI: 10.1039/d2dt00926a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We hereby report a series of near-linear trinuclear [Zn2LnIII(HL)4(CH3COO)]·(NO3)2 (where LnIII = La (1-La), Ce (2-Ce), Nd (3-Nd), Sm (4-Sm), Tb (5-Tb), and Dy (6-Dy)) complexes with Schiff base ligand (H2L). Magnetization relaxation dynamic studies on complexes 2-Ce, 5-Tb, and 6-Dy reveal the existence of well resolved frequency dependent zero-field out-of-phase χ''M signals, which is an indicator of a typical single-ion magnet behavior observed only for complex 6-Dy with Ueff = 43.7 K (τ0 = 2.42 × 10-6 s). The presence of two Zn(II) ions near the coordination geometry of Dy(III) ion in 6-Dy is likely to keep the first excited mJ levels significantly away from the ground state mJ level and is responsible for the observation of zero field slow magnetic relaxation behavior. The data collected in the presence of a magnetic field of Hdc = 2 kOe enhances the energy barrier by two-fold (88.63 K, τ0 = 1.36 × 10-7 s) in 6-Dy, suggesting the presence of QTM at zero field along with other under barrier relaxations, such as the Raman process. On the other hand, complex 2-Ce shows field induced slow relaxation of magnetization behavior with an effective energy barrier of 12.24 K (τ0 = 1.89 × 10-4 s). The CASSCF/SO-RASSI/SINGLE_ANISO based ab initio calculations using MOLCAS 8.0 code further rationalized our experimentally observed magnetization dynamics.
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Affiliation(s)
- Naushad Ahmed
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai-400076, Maharashtra, India.
| | - Kamal Uddin Ansari
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai-400076, Maharashtra, India.
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8
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Ding YS, Blackmore WJA, Zhai YQ, Giansiracusa MJ, Reta D, Vitorica-Yrezabal I, Winpenny REP, Chilton NF, Zheng YZ. Studies of the Temperature Dependence of the Structure and Magnetism of a Hexagonal-Bipyramidal Dysprosium(III) Single-Molecule Magnet. Inorg Chem 2021; 61:227-235. [PMID: 34939782 DOI: 10.1021/acs.inorgchem.1c02779] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The hexagonal-bipyramidal lanthanide(III) complex [Dy(OtBu)Cl(18-C-6)][BPh4] (1; 18-C-6 = 1,4,7,10,13,16-hexaoxacyclooctadecane ether) displays an energy barrier for magnetization reversal (Ueff) of ca. 1000 K in a zero direct-current field. Temperature-dependent X-ray diffraction studies of 1 down to 30 K reveal bending of the Cl-Ln-OtBu angle at low temperature. Using ab initio calculations, we show that significant bending of the O-Dy-Cl angle upon cooling from 273 to 100 K leads to a ca. 10% decrease in the energy of the excited electronic states. A thorough exploration of the temperature and field dependencies of the magnetic relaxation rate reveals that magnetic relaxation is dictated by five mechanisms in different regimes: Orbach, Raman-I, quantum tunnelling of magnetization, and Raman-II, in addition to the observation of a phonon bottleneck effect.
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Affiliation(s)
- You-Song Ding
- Frontier Institute of Science and Technology, 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, School of Chemistry, and School of Physics, 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, United Kingdom.,Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - William J A Blackmore
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Yuan-Qi Zhai
- Frontier Institute of Science and Technology, 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, School of Chemistry, and School of Physics, 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, United Kingdom
| | - Daniel Reta
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Inigo Vitorica-Yrezabal
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Richard E P Winpenny
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Nicholas F Chilton
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology, 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, School of Chemistry, and School of Physics, Xi'an Jiaotong University, Xi'an 710049, P. R. China
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9
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Wu J, Demeshko S, Dechert S, Meyer F. Macrocycle based dinuclear dysprosium(III) single molecule magnets with local D5h coordination geometry. Dalton Trans 2021; 50:17573-17582. [PMID: 34806736 DOI: 10.1039/d1dt02815d] [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
Targeted approaches for manipulating the coordination geometry of lanthanide ions are a promising way to synthesize high-performance single-molecule magnets (SMMs), but most of the successful examples reported to date focus on mononuclear complexes. Herein, we describe a strategy to assemble dinuclear SMMs with DyIII ions in approximate D5h coordination geometry based on pyrazolate-based macrocyclic ligands with two binding sites. A Dy4 complex with a rhomb-like arrangement of four DyIII as well as two dinuclear complexes having axial chlorido ligands (Dy2·Cl and Dy2*·Cl) were obtained; in the latter case, substituting Cl- by SCN- gave Dy2·SCN. Magneto-structural studies revealed that the μ-OH bridges with short Dy-O bonds dominate the magnetic anisotropy of the DyIII ions in centrosymmetric Dy4 to give a vortex type diamagnetic ground state. Dynamic magnetic studies of Dy4 identified two relaxation processes under zero field, one of which is suppressed after applying a dc field. For complexes Dy2·Cl and Dy2*·Cl, the DyIII ions feature almost perfect D5h environment, but both complexes only behave as field-induced SMMs (Ueff = 19 and 25 K) due to the weak axial Cl- donors. In Dy2·SCN additional MeOH coordination leads to a distorted D2d geometry of the DyIII ions, yet SMMs properties at zero field are observed due to the relatively strong axial ligand field provided by SCN- (Ueff = 43 K). Further elaboration of preorganizing macrocyclic ligands appears to be a promising strategy for imposing a desired coordination geometry with parallel orientation of the anisotropy axes of proximate DyIII ions in a targeted approach.
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Affiliation(s)
- Jianfeng Wu
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstr. 4, D-37077 Göttingen, Germany. .,School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, P. R. China
| | - Serhiy Demeshko
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstr. 4, D-37077 Göttingen, Germany.
| | - Sebastian Dechert
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstr. 4, D-37077 Göttingen, Germany.
| | - Franc Meyer
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstr. 4, D-37077 Göttingen, Germany.
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10
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Poe TN, Molinari S, Beltran-Leiva MJ, Celis-Barros C, Ramanantoanina H, Albrecht-Schönzart TE. Influence of Outer-Sphere Anions on the Photoluminescence from Samarium(II) Crown Complexes. Inorg Chem 2021; 60:15196-15207. [PMID: 34590830 DOI: 10.1021/acs.inorgchem.1c01606] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three samarium(II) crown ether complexes, [Sm(15-crown-5)2]I2 (1), [Sm(15-crown-5)2]I2·CH3CN (2), and [Sm(benzo-15-crown-5)2]I2 (3), have been prepared via the reaction of SmI2 with the corresponding crown ether in either THF or acetonitrile in good to moderate yields. The compounds have been characterized by single crystal X-ray diffraction and a variety of spectroscopic techniques. In all cases, the Sm(II) centers are sandwiched between two crown ether molecules and are bound by the five etheric oxygen atoms from each crown ether to yield 10-coordinate environments. Despite the higher symmetry crystal class of 1 (R3c), the samarium center resides on a general position, whereas in 2 and 3 (both in P21/c) the metal centers lie upon inversion centers. Moreover, the complexes in 2 and 3 are approximated well by D5d symmetry. The molecule in 1, however, is distorted from idealized D5d symmetry, and the crown ethers are more puckered than observed in 2 and 3. All three complexes luminesce in the NIR at low temperatures. However, the nature of the luminescence differs between the three compounds. 1 exhibits broadband photoluminescence at 20 °C but at low temperatures transitions to narrow peaks. 2 only exhibits nonradiative decay at 20 °C and at low temperatures retains a mixture of broadband and fine transitions. Finally, 3 displays broadband luminescence regardless of temperature. Spin-orbit (SO) CASSCF calculations reveal that the outer-sphere iodide anions influence whether broadband luminescence from 5d → 4f or fine 4f → 4f transitions occur through the alteration of symmetry around the metal centers and the nature of the excited states as a function of temperature.
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Affiliation(s)
- Todd N Poe
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Sarah Molinari
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Maria J Beltran-Leiva
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Cristian Celis-Barros
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Harry Ramanantoanina
- Department of Chemistry, Johannes Gutenberg-University of Mainz, 55128 Mainz, Germany
| | - Thomas E Albrecht-Schönzart
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
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11
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Kong M, Feng X, Wang J, Zhang YQ, Song Y. Tuning magnetic anisotropy via terminal ligands along the Dy⋯Dy orientation in novel centrosymmetric [Dy2] single molecule magnets. Dalton Trans 2021; 50:568-577. [DOI: 10.1039/d0dt03854g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The SMM properties of four dinuclear DyIII complexes can be effectively tuned by the appropriate alteration of terminal ligands and lattice guests.
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Affiliation(s)
- Ming Kong
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- People's Republic of China
| | - Xin Feng
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- People's Republic of China
| | - Jia Wang
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- People's Republic of China
| | - Yi-Quan Zhang
- Jiangsu Key Lab For NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- People's Republic of China
| | - You Song
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- People's Republic of China
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12
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High-Coordinate Mononuclear Ln(III) Complexes: Synthetic Strategies and Magnetic Properties. MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry7010001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Single-molecule magnets involving monometallic 4f complexes have been investigated extensively in last two decades to understand the factors that govern the slow magnetization relaxation behavior in these complexes and to establish a magneto-structural correlation. The prime goal in this direction is to suppress the temperature independent quantum tunneling of magnetization (QTM) effect via fine-tuning the coordination geometry/microenvironment. Among the various coordination geometries that have been pursued, complexes containing high coordination number around Ln(III) are sparse. Herein, we present a summary of the various synthetic strategies that were used for the assembly of 10- and 12-coordinated Ln(III) complexes. The magnetic properties of such complexes are also described.
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13
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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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14
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Canaj AB, Dey S, Wilson C, Céspedes O, Rajaraman G, Murrie M. Engineering macrocyclic high performance pentagonal bipyramidal Dy(iii) single-ion magnets. Chem Commun (Camb) 2020; 56:12037-12040. [DOI: 10.1039/d0cc04559d] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We highlight the vast synthetic scope for macrocyclic engineering of magnetic anisotropy, generating a high performance pentagonal bipyramidal Dy(iii) single-ion magnet where the weak equatorial ligand field is created entirely by using a macrocycle.
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Affiliation(s)
- Angelos B. Canaj
- School of Chemistry
- University of Glasgow
- University Avenue
- Glasgow
- UK
| | - Sourav Dey
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai
- India
| | - Claire Wilson
- School of Chemistry
- University of Glasgow
- University Avenue
- Glasgow
- UK
| | - Oscar Céspedes
- School of Physics and Astronomy
- University of Leeds
- Leeds LS2 9JT
- UK
| | - Gopalan Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai
- India
| | - Mark Murrie
- School of Chemistry
- University of Glasgow
- University Avenue
- Glasgow
- UK
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15
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Zhang XM, Duan YY, Gao HL, Cui JZ. Solvent-induced single-molecule magnet behavior and near-infrared luminescence properties of rare earth complexes. NEW J CHEM 2020. [DOI: 10.1039/d0nj03837g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate a route for designing and improving outstanding SMMs by means of a solvent-controlled crystallization.
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Affiliation(s)
- Xue-Mei Zhang
- Department of Chemistry
- Tianjin University
- Tianjin
- China
| | - Yao-Yao Duan
- Department of Chemistry
- Tianjin University
- Tianjin
- China
| | - Hong-Ling Gao
- Department of Chemistry
- Tianjin University
- Tianjin
- China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
| | - Jian-Zhong Cui
- Department of Chemistry
- Tianjin University
- Tianjin
- China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
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16
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Li D, Ding MM, Ge Y, Tello Yepes DF, Sun M, Najib MS, Li Y, Zhang YQ, Yao JL. Assembling two Dy 2 single-molecule magnets with different energy barriers via fine-tuning the geometries of Dy III sites. NEW J CHEM 2020. [DOI: 10.1039/d0nj04009f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Two Dy2 single-molecule magnets are prepared. The energy barrier of 2 is slightly enhanced by adjusting the geometries of DyIII centers.
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Affiliation(s)
- Dawei Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University
- Suzhou
- China
| | - Man-Man Ding
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University
- Nanjing
- China
| | - Yu Ge
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University
- Suzhou
- China
| | - David Felipe Tello Yepes
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Mathematics and Physics, Suzhou University of Science and Technology
- Suzhou
- China
| | - Mingyuan Sun
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University
- Suzhou
- China
| | - Muhammad Saleem Najib
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Mathematics and Physics, Suzhou University of Science and Technology
- Suzhou
- China
| | - Yahong Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University
- Suzhou
- China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University
- Nanjing
- China
| | - Jin-lei Yao
- College of Environmental Engineering
- University of Waterloo
- Waterloo N2L3G1
- Canada
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17
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Wu T, Zhai YQ, Deng YF, Chen WP, Zhang T, Zheng YZ. Correlating magnetic anisotropy with the subtle coordination geometry variation of a series of cobalt(ii)-sulfonamide complexes. Dalton Trans 2019; 48:15419-15426. [PMID: 31065655 DOI: 10.1039/c9dt01296f] [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
Systematic substitution on the N-(pyridine-2-ylmethyl)-sulfonamide ligand leads to the subtle variation of the CoN4 coordination geometry in a series of cobalt(ii) complexes sharing the common formula of Co[R1(C6N2H5)R2]2, where R1 = H, R2 = 4-tert-butylphenylsulfonyl (tBuphs) 1, R2 = 5-(dimethylamino)naphthalen-1-ylsulfonyl (DNps) 2, R2 = mesitylsulfonyl (Ms) 3, R2 = tosyl (Tos) 4, and R2 = naphthalen-1-ylsulfonyl (Nps) 5; R1 = Me, R2 = tBuphs 6. Magnetic studies show that the axial zero-field splitting parameter (D) is subtlely correlated with the coordination geometric variation subjected to the peripheral substituted groups. Specifically, the distortion from the ideal tetrahedral geometry (Td symmetry) to the seesaw geometry (D2d symmetry) increases uniaxial magnetic anisotropy. The degree of distortion measured by the continuous symmetry measure (CSM) shows that a narrow interval of CSM (6-7), which corresponds to 14-15 degree deviation from the standard tetrahedron, is ideal for maximising the D value in this coordination geometry, while the direction of the D tensor is less sensitive to such a structural variation.
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Affiliation(s)
- Tao Wu
- Frontier Institute of Science and Technology (FIST), State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science Xi'an Jiaotong University, 99 Yanxiang Road, Xi'an, Shaanxi 710054, P. R. China.
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18
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Single‐Molecule Magnetism in Three Dy
2
Complexes from the Use of a Pentadentate Schiff Base Ligand and Different Benzoates. Chem Asian J 2019; 14:2846-2852. [DOI: 10.1002/asia.201900636] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/19/2019] [Indexed: 01/13/2023]
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19
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Liu P, Li C, Yuan WJ. Modulating dynamic magnetic behaviors of dysprosium(III) dinuclear compounds based on a Schiff base-like ligand by using two different β-diketone coligands. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.02.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Ge Y, Huang Y, Montenegro JLB, Cui Y, Liu W, Li Y, Wang BL. Synthesis, Structures, and Single-Molecule Magnetic Properties of Three Dy 2 Complexes. Chem Asian J 2019; 14:986-994. [PMID: 30628179 DOI: 10.1002/asia.201801643] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/08/2019] [Indexed: 02/05/2023]
Abstract
To explore the influences of the subtle structural variations in the ligand backbones on the single-molecule magnetic properties of dinuclear dysprosium(III) complexes, three ligands-H2 L1 (H2 L1 =N1 ,N3 -bis(salicylaldehyde)diethylenetriamine), H2 L2 (H2 L2 =N1 ,N3 -bis(3-methoxysalicylidene)diethylenetriamine), and H2 L3 (H2 L3 =N1 ,N3 -bis(5-chlorosalicyladehyde)diethylenetriamine)-were synthesized and employed to prepare the expected dinuclear dysprosium(III) complexes. The three ligands differ in terms of the substituents at the benzene rings of the salicylaldehyde moieties. The reactions of Dy(NO3 )3 ⋅6 H2 O, pivalic acid, and the ligands H2 L1 , H2 L2 , and H2 L3 generated complexes with the formulae [Dy2 (L1 )2 (piv)2 ] (1), [Dy2 (L2 )2 (piv)2 ] (2), and [Dy2 (L3 )2 (piv)2 ]⋅ 2 MeCN (3), respectively. The purposeful attachment of the functional groups with varied sizes at the benzene rings of the salicylaldehyde backbones resulted in slight differences in the Dy-O-Dy bond angles and the Dy⋅⋅⋅Dy bond lengths in 1-3; consequently, the three complexes exhibited distinct magnetic properties. They all showed slow magnetization relaxation with energy barriers of 40.32 (1), 31.67 (2), and 33.53 K (3). Complete active space self-consistent field (CASSCF) calculations were performed on complexes 1-3 to rationalize the slight discrepancy observed in the magnetic behavior. The calculated results satisfactorily explained the experimental outcomes.
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Affiliation(s)
- Yu Ge
- College of Chemistry, Chemical Engineering and Materials, Science Soochow University, Suzhou, 215123, China
| | - Yuan Huang
- College of Chemistry, Chemical Engineering and Materials, Science Soochow University, Suzhou, 215123, China
| | | | - Yanfeng Cui
- College of Chemistry, Chemical Engineering and Materials, Science Soochow University, Suzhou, 215123, China
| | - Wei Liu
- College of Chemistry, Chemical Engineering and Materials, Science Soochow University, Suzhou, 215123, China
| | - Yahong Li
- College of Chemistry, Chemical Engineering and Materials, Science Soochow University, Suzhou, 215123, China
| | - Bao-Lin Wang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing, 210023, China
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21
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Solvent-induced two Dy2 compounds with different structures showing distinct slow magnetization relaxation behaviors. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.12.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Modulating the magnetization dynamics of rare earth complexes by structural regulation utilizing different solvents. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Jia JH, Li QW, Chen YC, Liu JL, Tong ML. Luminescent single-molecule magnets based on lanthanides: Design strategies, recent advances and magneto-luminescent studies. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2017.11.012] [Citation(s) in RCA: 173] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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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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25
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Herchel R, Zoufalý P, Nemec I. The effect of the second coordination sphere on the magnetism of [Ln(NO3)3(H2O)3]·(18-crown-6) (Ln = Dy and Er). RSC Adv 2019; 9:569-575. [PMID: 35521623 PMCID: PMC9059281 DOI: 10.1039/c8ra09648a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 12/14/2018] [Indexed: 11/21/2022] Open
Abstract
The objective of this work was the exploration of the effect of the second coordination sphere on the magnetic properties of [Ln(NO3)3(H2O)3]·(18C6) (Ln = Dy (1) and Er (2)) compounds comprising co-crystallized 18-crown-6 ethers. Both compounds were identified as field-induced single molecule magnets (SMMs) with estimated magnetization reversal barriers Ueff = 66–71 K for 1 and Ueff = 21–24 K for 2. Theoretical calculations with the B3LYP functional revealed substantial change and redistribution of the electrostatic potential upon accounting for the second coordination sphere represented by two 18C6 molecules, which resulted in the change of the crystal-field around metal atoms. As a result, the multireference CASSCF calculations exposed significant impact of the second coordination sphere on the energy splitting of the respective 6H15/2 (DyIII) and 4I15/2 (ErIII) ground states, the magnetization reversal barrier and the magnetic anisotropy parameters. Moreover, the calculated magnetization reversal barriers, Ucalc. = 57 K for 1 and Ucalc. = 16 K for 2, are in good agreement with the experimental values accentuating the importance of the second coordination sphere on the magnetic properties of SMMs. The impact of the second coordination sphere on the magnetic properties of [Ln(NO3)3(H2O)3]·(18C6) compounds comprising co-crystallized 18-crown-6 ethers was investigated.![]()
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Affiliation(s)
- Radovan Herchel
- Department of Inorganic Chemistry
- Faculty of Science
- Palacký University
- CZ-771 46 Olomouc
- Czech Republic
| | - Pavel Zoufalý
- Department of Inorganic Chemistry
- Faculty of Science
- Palacký University
- CZ-771 46 Olomouc
- Czech Republic
| | - Ivan Nemec
- Department of Inorganic Chemistry
- Faculty of Science
- Palacký University
- CZ-771 46 Olomouc
- Czech Republic
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26
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Maxwell L, Amoza M, Ruiz E. Mononuclear Lanthanide Complexes with 18-Crown-6 Ether: Synthesis, Characterization, Magnetic Properties, and Theoretical Studies. Inorg Chem 2018; 57:13225-13234. [DOI: 10.1021/acs.inorgchem.8b01688] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Lindley Maxwell
- Departament de Química Inorgànica i Orgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, E-08028 Barcelona, Spain
- Advanced Lithium and Industrial Minerals Research Center, Universidad de Antofagasta, Avenida Universidad de Antofagasta, 02800 Antofagasta, Chile
| | - Martín Amoza
- Departament de Química Inorgànica i Orgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, E-08028 Barcelona, Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica i Orgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, E-08028 Barcelona, Spain
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27
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Rousset E, Piccardo M, Boulon M, Gable RW, Soncini A, Sorace L, Boskovic C. Slow Magnetic Relaxation in Lanthanoid Crown Ether Complexes: Interplay of Raman and Anomalous Phonon Bottleneck Processes. Chemistry 2018; 24:14768-14785. [DOI: 10.1002/chem.201802779] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Elodie Rousset
- School of Chemistry University of Melbourne Victoria 3010 Australia
| | - Matteo Piccardo
- School of Chemistry University of Melbourne Victoria 3010 Australia
| | - Marie‐Emmanuelle Boulon
- UdR INSTM and Department of Chemistry “U. Schiff” University of Florence 50019 Sesto Fiorentino (FI) Italy
| | - Robert W. Gable
- School of Chemistry University of Melbourne Victoria 3010 Australia
| | | | - Lorenzo Sorace
- UdR INSTM and Department of Chemistry “U. Schiff” University of Florence 50019 Sesto Fiorentino (FI) Italy
| | - Colette Boskovic
- School of Chemistry University of Melbourne Victoria 3010 Australia
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28
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Wong HY, Chan WTK, Law GL. Assembly of Lanthanide(III) Cubanes and Dimers with Single-Molecule Magnetism and Photoluminescence. Inorg Chem 2018; 57:6893-6902. [DOI: 10.1021/acs.inorgchem.8b00505] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ho-Yin Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong
| | - Wesley Ting Kwok Chan
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong
| | - Ga-Lai Law
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong
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29
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Li XL, Li J, Zhu C, Han B, Liu Y, Yin Z, Li F, Liu CM. An intense luminescent Dy(iii) single-ion magnet with the acylpyrazolonate ligand showing two slow magnetic relaxation processes. NEW J CHEM 2018. [DOI: 10.1039/c8nj03345e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new Dy(iii)-acylpyrazolonate complex displays both intense yellow-light emission and single-ion magnet behavior with two slow magnetic relaxation processes, acting as a potential bifunctional material.
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Affiliation(s)
- Xi-Li Li
- Henan Provincial Key Laboratory of Surface and Interface Science
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | - Junfeng Li
- Henan Provincial Key Laboratory of Surface and Interface Science
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | - Cancan Zhu
- Henan Provincial Key Laboratory of Surface and Interface Science
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | - Bing Han
- Henan Provincial Key Laboratory of Surface and Interface Science
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | - Yingfan Liu
- Henan Provincial Key Laboratory of Surface and Interface Science
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | - Zhigang Yin
- Henan Provincial Key Laboratory of Surface and Interface Science
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | - Fengcai Li
- Henan Provincial Key Laboratory of Surface and Interface Science
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | - Cai-Ming Liu
- Bejing National Laboratory for Molecular Sciences
- Institution of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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30
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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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31
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Zhang X, Xu N, Shi W, Wang BW, Cheng P. The influence of an external magnetic field and magnetic-site dilution on the magnetization dynamics of a coordination network based on ferromagnetic coupled dinuclear dysprosium(iii) units. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00663b] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 2D coordination network was synthesized and structurally characterized. Ferromagnetic interactions, multi-process slow relaxation of magnetization and hysteresis loops were also studied.
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Affiliation(s)
- Xuejing Zhang
- College of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- China
| | - Na Xu
- College of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- China
| | - Wei Shi
- College of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- China
| | - Bing-Wu Wang
- Beijing National Laboratory of Molecular Science
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Peng Cheng
- College of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- China
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32
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Zhang WY, Tian YM, Li HF, Chen P, Zhang YQ, Yan PF, Sun WB. Strictly linear trinuclear Dy-Ca/Mg-Dy single-molecule magnets: the impact of long-range f-f ferromagnetic interactions on suppressing quantum tunnelling of magnetization leading to slow magnetic relaxation. Dalton Trans 2017; 46:8259-8268. [PMID: 28613300 DOI: 10.1039/c7dt01395g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, structural characterization and magnetic properties of four heterometallic complexes with formulas Ln2M(OQ)8 [Ln(iii) = Dy, M(ii) = Ca (1), Mg (2); Ln(iii) = Er, M(ii) = Ca (3), Mg (4); HOQ = 8-hydroxyquinoline] are reported. Complexes display a perfectly linear arrangement of three metal ions involving two terminal Ln(iii) ions and one central alkaline earth M(ii) ion, and they are bridged by three phenolato oxygen atoms from three 8-hydroxyquinoline ligands. Direct-current (dc) magnetic susceptibility studies show that there exists a long-range ferromagnetic (FM) interaction between two f-electronic centers in Dy-based complexes 1 and 2 albeit they are separated by diamagnetic alkaline earth ions, and the FM interaction has been successfully reproduced by ab initio calculations. Alternating current (ac) magnetic susceptibility measurements indicate that complexes 1 and 2 exhibit significant single-molecule magnet (SMM) behaviors. This is mostly attributed to the parallel magnetic axes of individual Dy(iii) sites aligning closely to the Dy-M-Dy direction, and the linearly extending magnetic susceptibility tensors of each ion lead to the FM interaction. The dc and ac susceptibility studies of the intramolecularly diluted complexes reveal that the f-f coupling suppresses the QTMs significantly in the absence of the external magnetic field.
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Affiliation(s)
- Wan-Ying Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, Harbin 150080, P. R. China.
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33
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Lucio-Martínez F, Bermúdez B, Ortigueira JM, Adams H, Fernández A, Pereira MT, Vila JM. A Highly Effective Strategy for Encapsulating Potassium Cations in Small Crown Ether Rings on a Dinuclear Palladium Complex. Chemistry 2017; 23:6255-6258. [PMID: 28301065 DOI: 10.1002/chem.201700597] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Fátima Lucio-Martínez
- Departamento de Química Inorgánica; Universidade de Santiago de Compostela; Avenida das Ciencias s/n 15782 Santiago de Compostela Spain
| | - Brais Bermúdez
- Departamento de Química Inorgánica; Universidade de Santiago de Compostela; Avenida das Ciencias s/n 15782 Santiago de Compostela Spain
| | - Juan M. Ortigueira
- Departamento de Química Inorgánica; Universidade de Santiago de Compostela; Avenida das Ciencias s/n 15782 Santiago de Compostela Spain
| | - Harry Adams
- Departament of Chemistry; The University of Sheffield; Sheffield S3 7HF UK
| | - Alberto Fernández
- Departamento de Química Fundamental and Centro de Investigacións Científicas Avanzadas (CICA); Facultade de Ciencias; Universidade da Coruña; 15071 A Coruña Spain
| | - M. Teresa Pereira
- Departamento de Química Inorgánica; Universidade de Santiago de Compostela; Avenida das Ciencias s/n 15782 Santiago de Compostela Spain
| | - José M. Vila
- Departamento de Química Inorgánica; Universidade de Santiago de Compostela; Avenida das Ciencias s/n 15782 Santiago de Compostela Spain
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34
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Peng G, Zhang YY, Li ZY. Effect of coordination environment on the magnetic relaxation of mononuclear Dy III field-induced single molecule magnets. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.01.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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35
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Tang Q, Li PF, Zou ZM, Liu Z, Liu SX. A novel cryogenic magnetic refrigerant metal-organic framework based on 1D gadolinium(III) chain. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2016.12.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Tu HR, Sun WB, Li HF, Chen P, Tian YM, Zhang WY, Zhang YQ, Yan PF. Complementation and joint contribution of appropriate intramolecular coupling and local ion symmetry to improve magnetic relaxation in a series of dinuclear Dy2 single-molecule magnets. Inorg Chem Front 2017. [DOI: 10.1039/c6qi00508j] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The joint contribution of appropriate intramolecular coupling and local ion symmetry to improve magnetic relaxation in a series of dinuclear Dy2 SMMs.
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Affiliation(s)
- Hao-Ran Tu
- Department Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- Heilongjiang University
- Harbin 150080
- China
| | - Wen-Bin Sun
- Department Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- Heilongjiang University
- Harbin 150080
- China
| | - Hong-Feng Li
- Department Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- Heilongjiang University
- Harbin 150080
- China
| | - Peng Chen
- Department Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- Heilongjiang University
- Harbin 150080
- China
| | - Yong-Mei Tian
- Department Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- Heilongjiang University
- Harbin 150080
- China
| | - Wan-Ying Zhang
- Department Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- Heilongjiang University
- Harbin 150080
- China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Peng-Fei Yan
- Department Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education
- Heilongjiang University
- Harbin 150080
- China
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37
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Lyu DP, Zheng JY, Li QW, Liu JL, Chen YC, Jia JH, Tong ML. Construction of lanthanide single-molecule magnets with the “magnetic motif” [Dy(MQ)4]−. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00393e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
[Dy2(MQ)4(NO3)3]+ is SMM-silent (SMM = single-molecule magnet) owing to the unfavourable magnetic interactions. Introducing an additional “magnetic motif” [Dy(MQ)4]− to diminish such interactions gave a trinuclear [Dy3(MQ)8(NO3)], which behaves as an SMM.
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Affiliation(s)
- Deng-Ping Lyu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- 510275 Guangzhou
- P. R. China
| | - Jie-Yu Zheng
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- 510275 Guangzhou
- P. R. China
| | - Quan-Wen Li
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- 510275 Guangzhou
- P. R. China
| | - Jun-Liang Liu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- 510275 Guangzhou
- P. R. China
| | - Yan-Cong Chen
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- 510275 Guangzhou
- P. R. China
| | - Jian-Hua Jia
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- 510275 Guangzhou
- P. R. China
| | - Ming-Liang Tong
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- 510275 Guangzhou
- P. R. China
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38
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Deng YF, Han T, Yin B, Zheng YZ. On balancing the QTM and the direct relaxation processes in single-ion magnets – the importance of symmetry control. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00135e] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Two mononuclear trigonal-planar Co(ii) complexes with a similar coordination environment except for the symmetries were reported to exhibit distinct relaxation dynamics due to the effect of the QTM and direct process.
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Affiliation(s)
- Yi-Fei Deng
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory for Mechanical Behavior of Materials and School of Science
- Xi'an Jiaotong University
- Xi'an 710054
- China
| | - Tian Han
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory for Mechanical Behavior of Materials and School of Science
- Xi'an Jiaotong University
- Xi'an 710054
- China
| | - Bing Yin
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory for Mechanical Behavior of Materials and School of Science
- Xi'an Jiaotong University
- Xi'an 710054
- China
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39
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Chen S, Mereacre V, Kostakis GE, Anson CE, Powell AK. Systematic studies of hexanuclear {MIII4LnIII2} complexes (M = Fe, Ga; Ln = Er, Ho): structures, magnetic properties and SMM behavior. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00091j] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first heterometallic GaIII–ErIII single-molecule magnet has been synthesized and the role of GaIII in extracting the FeIII–ErIII and ErIII–ErIII interaction has been assessed.
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Affiliation(s)
- Sihuai Chen
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
- State Key Laboratory of Structural Chemistry
| | - Valeriu Mereacre
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
| | - George E. Kostakis
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton BN1 9QJ
- UK
| | - Christopher E. Anson
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
| | - Annie K. Powell
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
- Institute of Nanotechnology
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40
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Akhtar MN, Liao XF, Chen YC, Liu JL, Tong ML. Di- and octa-nuclear dysprosium clusters derived from pyridyl-triazole based ligand: {Dy2} showing single molecule magnetic behaviour. Dalton Trans 2017; 46:2981-2987. [DOI: 10.1039/c7dt00047b] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DyIII-based two complexes, {Dy2} (1) and {Dy8} (2), were successfully isolated with H2bpte ligand. In 1, H2bpte bears trans,trans- while in 2 has cis,cis- coordination modes. {Dy2} displays the single-molecule magnet behaviour with an energy barrier Ueff = 59(4) K.
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Affiliation(s)
- Muhammad Nadeem Akhtar
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Xiao-Fen Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Yan-Cong Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Jun-Liang Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Ming-Liang Tong
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
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41
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Yu KX, Ding YS, Han T, Leng JD, Zheng YZ. Magnetic relaxations in four-coordinate Dy(iii) complexes: effects of anionic surroundings and short Dy–O bonds. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00117c] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two four-coordinate Dy(iii) mononuclear complexes show disparate magnetic relaxation behaviour due to the differentiated Dy–O/N bond lengths.
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Affiliation(s)
- Ke-Xin Yu
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior of Materials and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
- Xi'an 710054
- P. R. China
| | - You-Song Ding
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior of Materials and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
- Xi'an 710054
- P. R. China
| | - Tian Han
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior of Materials and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
- Xi'an 710054
- P. R. China
| | - Ji-Dong Leng
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior of Materials and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
- Xi'an 710054
- P. R. China
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST)
- State Key Laboratory of Mechanical Behavior of Materials and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
- Xi'an 710054
- P. R. China
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