1
|
Li WQ, Ma MX, Ni QL, Li SM, Gui LC, Wang XJ. Synthesis, structures and magnetic properties of four dysprosium-based complexes with a multidentate ligand with steric constraint. CrystEngComm 2023. [DOI: 10.1039/d2ce01201d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Four dysprosium-based complexes with a multidentate ligand with steric constraint were constructed. Their structures and magnetic properties were studied.
Collapse
Affiliation(s)
- Wen-Qiang Li
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Meng-Xia Ma
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Qing-Ling Ni
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Shi-Ming Li
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Liu-Cheng Gui
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Xiu-Jian Wang
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| |
Collapse
|
2
|
Mandal S, Pramanik A, Dey S, Carrella LM, Rajaraman G, Rentschler E, Mohanta S. Experimental and theoretical investigations on three Dy III4 single molecule magnets: structural and magneto-structural correlations. Dalton Trans 2022; 51:14753-14766. [PMID: 36106563 DOI: 10.1039/d2dt02348b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The work in this report describes the syntheses, crystal structures, dc/ac magnetic behaviour, and theoretical calculations (both ab initio CASSCF and DFT) of three defect dicubane/planar butterfly type tetradysprosium(III) compounds of compositions [DyIII4L4(μ3-OH)2(carboxylate)2(dmf)2] (carboxylate = formate (1), acetate (2), propionate (3)), where H2L = 2-(2-hydroxy-3-ethoxybenzylideneamino)phenol. In the butterfly type structures, two DyIII centres (Dyb) occupy the body positions while two other (Dyw) units occupy the wing positions. SHAPE analyses reveal that the coordination geometries of the Dyb and Dyw centres, both octacoordinated, are triangular dodecahedron (TDD) and square antiprism (SAPR), respectively. Variable-temperature magnetic susceptibility measurements give an indication of weak antiferromagnetic interactions and variable-field magnetization measurements reveal strong anisotropy in all the three compounds. The variable-temperature/frequency in-phase/out-of-phase AC susceptibility data reveal that all these three compounds are SMMs with two relaxation channels under zero dc field; slow relaxation (SR) and fast relaxation (FR) processes could be assigned to the SAPR (Dyw) and TDD (Dyb) metal centres, respectively. The simulated Ueff and τ0 values are: 49.0 cm-1 and 1.76 × 10-7 s for 1, 30.3 cm-1 and 1.51 × 10-8 s for 2 and 23.4 cm-1 and 9.64 × 10-7 s for 3. Furthermore, ab initio CASSCF/RASSI-SO/SINGLE_ANISO calculations reveal that the ground state of DyIII centres are axial in nature with a dominating contribution from mJ = |±15/2>. The magnetization relaxation occurs via the first excited KD resulting in the large computed blocking barrier of Dyw (SAPR) centres compared to that of the Dyb (TDD) centres which corroborates the experimental measurements. The exchange parameters obtained from DFT calculations are generally in line with those obtained from the fitting of χMT vs. T in POLY_ANISO calculations. Interesting structural and magneto-structural correlations have been found, which are the major outcomes of this investigation.
Collapse
Affiliation(s)
- Shuvankar Mandal
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India.
| | - Abhishek Pramanik
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India.
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Luca M Carrella
- Department of Chemistry, Johannes-Gutenberg University Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Eva Rentschler
- Department of Chemistry, Johannes-Gutenberg University Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Sasankasekhar Mohanta
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India.
| |
Collapse
|
3
|
Synthesis, Crystal Structures, Photoluminescence and Magnetic Properties of Lanthanide(III) Complexes Based on 2-(Thiophen-2-ylselanyl)acetic Acid Ligand. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02266-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
4
|
Roy S, Shukla P, Prakash Sahu P, Sun Y, Ahmed N, Chandra Sahoo S, Wang X, Kumar Singh S, Das S. Zero‐field Slow Magnetic Relaxation Behavior of Dy
2
in a Series of Dinuclear {Ln
2
} (Ln=Dy, Tb, Gd and Er) Complexes: A Combined Experimental and Theoretical Study. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100983] [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]
Affiliation(s)
- Soumalya Roy
- Department of Basic Sciences, Chemistry Discipline Institute of Infrastructure Technology Research And Management Near Khokhra Circle, Maninagar East Ahmedabad 380026, Gujarat India
| | - Pooja Shukla
- Department of Basic Sciences, Chemistry Discipline Institute of Infrastructure Technology Research And Management Near Khokhra Circle, Maninagar East Ahmedabad 380026, Gujarat India
| | - Prem Prakash Sahu
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi- 502285, Sangareddy Telangana India
| | - Yu‐Chen Sun
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Naushad Ahmed
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi- 502285, Sangareddy Telangana India
| | | | - Xin‐Yi Wang
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Saurabh Kumar Singh
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi- 502285, Sangareddy Telangana India
| | - Sourav Das
- Department of Basic Sciences, Chemistry Discipline Institute of Infrastructure Technology Research And Management Near Khokhra Circle, Maninagar East Ahmedabad 380026, Gujarat India
| |
Collapse
|
5
|
Ji XQ, Xiong J, Sun R, Ma F, Sun HL, Zhang YQ, Gao S. Enhancing the magnetic performance of pyrazine-N-oxide bridged dysprosium chains through controlled variation of ligand coordination modes. Dalton Trans 2021; 50:7048-7055. [PMID: 33949544 DOI: 10.1039/d1dt00635e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
While assembling superparamagnetic units in a controlled manner is crucial for future applications of molecular nanomagnets, optimizing their magnetic properties while achieving directional assembly of these units still remains a formidable challenge. Herein, we demonstrate how the assembly of two dysprosium chain complexes, namely, [Dy2(L)2Cl2(CH3OH)3]n·nCH3OH (1) and [Dy(L)Cl(DMF)]n (2) (H2L = N'-(5-bromo-2-hydroxybenzylidene)pyrazine-N-oxide-carbohydrazide), can be successfully manipulated using an appropriate bridging ligand design. Both complexes contain similar dimeric units bridged by two alkoxido oxygens from an L2- ligand, but extended by its pyrazine-N-oxide group exhibiting two distinct coordination modes, namely, single and double pyrazine-N-oxide bridges, respectively. Magnetic studies reveal that both complexes display typical slow magnetic relaxation under zero direct-current field; however, the anisotropy barrier and the coercive field at 2 K for complex 2 are twice as much as that of 1. A further theoretical study indicates that switching the coordination mode from a single pyrazine-N-oxide bridge to double bridges can enhance both the magnetic anisotropy of dysprosium ions and magnetic coupling within the dimeric cores. The synergistic effect between the magnetic anisotropy of dysprosium ions and magnetic interactions among them directly contributes to the overall better performance of complex 2.
Collapse
Affiliation(s)
- Xiao-Qin Ji
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing Normal University, Beijing 100875, P. R. China.
| | | | | | | | | | | | | |
Collapse
|
6
|
Li D, Ding MM, Huang Y, Tello Yepes DF, Li H, Li Y, Zhang YQ, Yao J. Evolution from a single relaxation process to two-step relaxation processes of Dy 2 single-molecule magnets via the modulations of the terminal solvent ligands. Dalton Trans 2021; 50:217-228. [PMID: 33295893 DOI: 10.1039/d0dt03093g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
To explore the influences of magnetic interactions on the relaxation dynamics of single-molecule magnets (SMMs) and to understand the relationship between single-ion relaxation and the relaxation of a molecular entity, it is very important to design dinuclear lanthanide-based SMMs with two-step relaxation processes. Here, three Dy2 complexes of compositions [Dy2(L)2(NO3)2(MeOH)2] (1), [Dy2(L)2(NO3)2(EtOH)2] (2), and [Dy2(L)2(NO3)2(DMF)2]·0.5EtOH (3) (H2L = 2-(((2-hydroxy-3-methoxybenzyl)imino)methyl)-4-methoxyphenol) were successfully synthesized via elaborately introducing different terminal solvent ligands. X-ray single-crystal diffraction analyses revealed that complexes 1-3 are isostructural. The two DyIII ions of 1 and 2 both adopt D2d symmetry, while the two DyIII centres of 3 display D2d and D4d symmetries, respectively. The magnetic property studies of 1-3 indicated that all three complexes exhibit single-molecule magnet (SMM) behaviours with energy barriers of 104 K for 1, 98.94 K for 2, and 76.28 K and 45.54 K for 3 under zero dc field. The target of assembling Dy2 SMMs with two-step relaxation processes was achieved by gradually increasing the sizes of the terminal solvent ligands. Complex 3 exhibits two-step relaxation processes. Complete active space self-consistent field (CASSCF) calculations were performed on 1-3 to rationalize the observed differences in the magnetic behaviour. It is found that both the angles θ between the magnetic axis and the vector connecting two DyIII ions and the symmetries of DyIII ions are vital factors that affect the energy barriers of 1-3. The high local symmetries of the central metals in 1 and 2 make the complexes act as SMMs with higher energy barriers, while the smaller θ angle and different symmetries of the two DyIII ions render complex 3 as a SMM with a two-step relaxation process. This work demonstrates a new methodology for preparing SMMs with two-step relaxation processes by fine-tuning the terminal solvent ligands.
Collapse
Affiliation(s)
- Dawei Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
7
|
Wu J, Liu D, Yang Q, Ge Y, Tang J, Qi Z. Magnetic investigation in di- and tetranuclear lanthanide complexes. NEW J CHEM 2021. [DOI: 10.1039/d0nj04247a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Dinuclear and tetranuclear dysprosium-based complexes have been constructed by using a crab-like hydrazone ligand, with the former acting as a typical single-molecule magnet and the later showing diamagnetic ground state.
Collapse
Affiliation(s)
- Jianfeng Wu
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, School of Life Sciences, Northwestern Polytechnical University
- Xi'an
- P. R. China
| | - Dan Liu
- Institute of Flexible Electronics (IFE), Northwestern Polytechnical University
- Xi’an
- China
| | - Qianqian Yang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Yan Ge
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, School of Life Sciences, Northwestern Polytechnical University
- Xi'an
- P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Zhenhui Qi
- Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, School of Life Sciences, Northwestern Polytechnical University
- Xi'an
- P. R. China
| |
Collapse
|
8
|
Xu SM, An ZW, Zhang W, Zhang YQ, Yao MX. Ligand field and anion-driven structures and magnetic properties of dysprosium complexes. CrystEngComm 2021. [DOI: 10.1039/d1ce00115a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Based on the organic ligand H2L, three Dy-based complexes were synthesized, and structurally and magnetically characterized. Theoretical calculations are performed to analyze the performance of single molecule magnets.
Collapse
Affiliation(s)
- Shao-Min Xu
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Zhong-Wu An
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Wei Zhang
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Lab for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Min-Xia Yao
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| |
Collapse
|
9
|
Su SD, Li JX, Xu F, Wang CX, Wang K, Li Y, Zhang SH, Zhang XQ, Zhang YQ, Liang FP. Dy III single-molecule magnets from ligands incorporating both amine and acylhydrazine Schiff base groups: the centrosymmetric {Dy 2} displaying dual magnetic relaxation behaviors. Dalton Trans 2020; 49:15739-15749. [PMID: 33146181 DOI: 10.1039/c9dt04434e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The novel multidentate chelating ligands N'-(2-pyridylmethylidene)-2-(2-pyridylmethylideneamino)benzohydrazide (Hpphz) and N'-(2-salicylmethylidene)-2-(2-salicylmethylideneamino)benzohydrazide (H3sshz), which incorporate both amine and acylhydrazine Schiff base groups, were synthesized and investigated in DyIII coordination chemistry. The reactions of Hpphz and Dy(OAc)3·4H2O have yielded two {Dy2} featuring double OAc- bridges: [Dy2(H2aphz)2(OAc)4(ROH)2] [R = Me (1) and Et (2)], where the Hpphz ligands were in situ hydrolyzed into 2-amino-(2-pyridylmethylideneamino)benzohydrazide ions (H2aphz-). Besides, the reaction between H3sshz and Dy(NO)3·6H2O afforded a [Dy6(sshz)4(μ3-OH)4(μ4-O)(MeOH)4]2·17.5MeOH·2H2O cluster (3). This cluster contained two discrete {Dy6} cores, each of which consisted of a pair of {Dy3} triangular units. All the complexes displayed a single relaxation process of single-molecule magnet (SMM) behaviors under a zero dc field. Both 1 and 2 showed field-induced dual magnetic-relaxation behaviors. However, their diluted samples (1@Y and 2@Y) only showed one-step relaxation behaviors whether under a zero or applied dc field, indicating that the dual magnetic-relaxation behaviors of 1 and 2 were absent after the dilution. Combined with ab initio calculations, it could be infered that the dual magnetic-relaxation behaviors of 1 and 2 might be ascribled to the joint contributions of the single ion anisotropy and magnetic interactions. Examples of this type are rather rare in previous studies. Ab initio calculations also suggested that the discrepancy between the relaxation processes of 1 and 2 may be caused by the small difference between their magnetic interactions.
Collapse
Affiliation(s)
- Sen-Da Su
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Zhang L, Yang P, Li L, Hu Y, Gao Y, Tao J. A series of Salen‐type homodinuclear lanthanide complexes and their slow magnetic relaxation in Dy
2
and Ho
2. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5331] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lun Zhang
- College of Chemistry and Materials ScienceHuaibei Normal University 100 Dongshan Road Huaibei 235000 People's Republic of China
| | - Pei‐Pei Yang
- College of Chemistry and Materials ScienceHuaibei Normal University 100 Dongshan Road Huaibei 235000 People's Republic of China
- Anhui Key Laboratory of Energetic MaterialsHuaibei Normal University 100 Dongshan Road Huaibei 235000 People's Republic of China
| | - Ling‐Fei Li
- College of Chemistry and Materials ScienceHuaibei Normal University 100 Dongshan Road Huaibei 235000 People's Republic of China
| | - Yi‐Ye Hu
- College of Chemistry and Materials ScienceHuaibei Normal University 100 Dongshan Road Huaibei 235000 People's Republic of China
| | - Yu Gao
- College of Chemistry and Materials ScienceHuaibei Normal University 100 Dongshan Road Huaibei 235000 People's Republic of China
| | - Jin Tao
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and TechnologyNanjing Normal University Nanjing 210023 People's Republic of China
| |
Collapse
|
11
|
Duan YY, Wu DF, Chen HH, Wang YJ, Li L, Gao HL, Cui JZ. New dinuclear compounds of dysprosium and erbium constructed by an O-vanillin ligand and β-diketonate coligand: Synthesis, near-Infrared luminescent and magnetism. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119203] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Wang WM, Hu XY, Yang Y, Zhao JQ, Zhang YX, Kang XM, Wu ZL. Modulation of magnetic relaxation behaviors via replacing coordinated solvents in a series of linear tetranuclear Dy4 complexes. NEW J CHEM 2020. [DOI: 10.1039/d0nj01830a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Four linear tetranuclear Dy4 complexes with different coordinated solvents exhibit distinct magnetic relaxation behaviors.
Collapse
Affiliation(s)
- Wen-Min Wang
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
| | - Xin-Yan Hu
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Yang Yang
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Jia-Qi Zhao
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Ya-Xin Zhang
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Xiao-Min Kang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Nankai University
- Tianjin 300071
- China
| | - Zhi-Lei Wu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Nankai University
- Tianjin 300071
- China
- Key Laboratory of Analytical Science and Technology of Hebei Province
| |
Collapse
|
13
|
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.
Collapse
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)
| |
Collapse
|
14
|
Zhang W, Xu SM, Zhu ZX, Ru J, Zhang YQ, Yao MX. Strong intramolecular DyIII–DyIII magnetic couplings up to 15.00 cm−1 in phenoxyl-bridged dinuclear 4f complexes. NEW J CHEM 2020. [DOI: 10.1039/c9nj05971g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unexpectedly, intramoleular DyIII–DyIII magnetic couplings are up to 15.00 cm−1 in the phenolate-bridged Dy2 complexes. And single-molecule magnet behavior is exhibited with effective energy of 76.18 K under zero dc field.
Collapse
Affiliation(s)
- Wei Zhang
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Shao-Min Xu
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Zhao-Xia Zhu
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Jing Ru
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Lab for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Min-Xia Yao
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| |
Collapse
|
15
|
Cen P, Liu X, Zhang YQ, Ferrando-Soria J, Xie G, Chen S, Pardo E. Modulating magnetic dynamics through tailoring the terminal ligands in Dy2 single-molecule magnets. Dalton Trans 2020; 49:808-816. [DOI: 10.1039/c9dt03993g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The alternation of terminal ligands leads to distinct arrangements of anisotropy axes and magnetic interactions in two Dy2 complexes which present different dynamic magnetic behaviors.
Collapse
Affiliation(s)
- Peipei Cen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- 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
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Jesús Ferrando-Soria
- Departamento de Química Inorgánica
- Instituto de Ciencia Molecular (ICMOL)
- Universidad de Valencia
- Paterna 46980
- Spain
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Emilio Pardo
- Departamento de Química Inorgánica
- Instituto de Ciencia Molecular (ICMOL)
- Universidad de Valencia
- Paterna 46980
- Spain
| |
Collapse
|
16
|
Yang W, Velkos G, Liu F, Sudarkova SM, Wang Y, Zhuang J, Zhang H, Li X, Zhang X, Büchner B, Avdoshenko SM, Popov AA, Chen N. Single Molecule Magnetism with Strong Magnetic Anisotropy and Enhanced Dy∙∙∙Dy Coupling in Three Isomers of Dy-Oxide Clusterfullerene Dy 2O@C 82. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1901352. [PMID: 31637168 PMCID: PMC6794633 DOI: 10.1002/advs.201901352] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/24/2019] [Indexed: 06/10/2023]
Abstract
A new class of single-molecule magnets (SMMs) based on Dy-oxide clusterfullerenes is synthesized. Three isomers of Dy2O@C82 with C s(6), C 3v(8), and C 2v(9) cage symmetries are characterized by single-crystal X-ray diffraction, which shows that the endohedral Dy-(µ2-O)-Dy cluster has bent shape with very short Dy-O bonds. Dy2O@C82 isomers show SMM behavior with broad magnetic hysteresis, but the temperature and magnetization relaxation depend strongly on the fullerene cage. The short Dy-O distances and the large negative charge of the oxide ion in Dy2O@C82 result in the very strong magnetic anisotropy of Dy ions. Their magnetic moments are aligned along the Dy-O bonds and are antiferromagnetically (AFM) coupled. At low temperatures, relaxation of magnetization in Dy2O@C82 proceeds via the ferromagnetically (FM)-coupled excited state, giving Arrhenius behavior with the effective barriers equal to the AFM-FM energy difference. The AFM-FM energy differences of 5.4-12.9 cm-1 in Dy2O@C82 are considerably larger than in SMMs with {Dy2O2} bridges, and the Dy∙∙∙Dy exchange coupling in Dy2O@C82 is the strongest among all dinuclear Dy SMMs with diamagnetic bridges. Dy-oxide clusterfullerenes provide a playground for the further tuning of molecular magnetism via variation of the size and shape of the fullerene cage.
Collapse
Affiliation(s)
- Wei Yang
- College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123P. R. China
| | - Georgios Velkos
- Leibniz Institute for Solid State and Materials Research (IFW Dresden)Helmholtzstrasse 2001069DresdenGermany
| | - Fupin Liu
- Leibniz Institute for Solid State and Materials Research (IFW Dresden)Helmholtzstrasse 2001069DresdenGermany
| | - Svetlana M. Sudarkova
- Leibniz Institute for Solid State and Materials Research (IFW Dresden)Helmholtzstrasse 2001069DresdenGermany
| | - Yaofeng Wang
- College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123P. R. China
| | - Jiaxin Zhuang
- College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123P. R. China
| | - Hanning Zhang
- College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123P. R. China
| | - Xiang Li
- College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123P. R. China
| | - Xingxing Zhang
- College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123P. R. China
| | - Bernd Büchner
- Leibniz Institute for Solid State and Materials Research (IFW Dresden)Helmholtzstrasse 2001069DresdenGermany
| | - Stanislav M. Avdoshenko
- Leibniz Institute for Solid State and Materials Research (IFW Dresden)Helmholtzstrasse 2001069DresdenGermany
| | - Alexey A. Popov
- Leibniz Institute for Solid State and Materials Research (IFW Dresden)Helmholtzstrasse 2001069DresdenGermany
| | - Ning Chen
- College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123P. R. China
| |
Collapse
|
17
|
|
18
|
Zhang K, Li GP, Zhang C, Wang YY. Dramatic impact of auxiliary ligands on the two-step magnetic relaxation process in Dy 4(iii) single-molecule magnets. Dalton Trans 2019; 48:5793-5799. [PMID: 30977505 DOI: 10.1039/c9dt01076a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
To better understand the factors determining the multi-step relaxation processes in polynuclear lanthanide single molecule magnets (SMMs), two Dy(iii)4 SMMs showing two-step relaxation processes were elaborately designed and investigated for their structure-dependent magnetic properties. Through targetedly fine-tuning the auxiliary ligand (from the anion of 1-phenylbutane-1,3-dione to 2-acetylcyclopentanone) on specific Dy(iii) sites while retaining the same type of coordination atoms, one of the two relaxation processes shifted to higher temperature with an increase of energy barrier, which permits the unambiguous assignment of the relaxation processes to specific metal sites. Therefore, the present {Dy4} systems provide a good example to probe the factors determining the relaxation dynamics, and point to a simple way to optimize the magnetic performance of polynuclear dysprosium SMMs.
Collapse
Affiliation(s)
- Kun Zhang
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, P.R. China.
| | | | | | | |
Collapse
|
19
|
Zhang K, Li GP, Montigaud V, Cador O, Le Guennic B, Tang J, Wang YY. Tetranuclear dysprosium single-molecule magnets: tunable magnetic interactions and magnetization dynamics through modifying coordination number. Dalton Trans 2019; 48:2135-2141. [PMID: 30667435 DOI: 10.1039/c8dt05004j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The study of mononuclear lanthanide-based systems, where the observed Single Molecule Magnets (SMMs) properties originate from the local magnetic anisotropy of the single lanthanide ion, has been extensively investigated in the literature. The case for polynuclear lanthanide SMMs becomes more challenging both experimentally and theoretically due to the complexity of such architectures involving interactions between the magnetic centers. Much interest was devoted to the study of the structural effect on the magnetic interactions and relaxation dynamics. However, the understanding of the structural influence on those two factors remains a difficult task. To address this issue, a system containing two structurally related tetranuclear Dy(iii) SMMs, namely [Dy4(L)4(OH)2(DMF)4(NO3)2]·2(DMF)·(H2O) (1) and [Dy4(L)4(OH)2(DMF)2(NO3)2] (2) (H2L = 2-(2-hydroxy-3-methoxybenzylideneamino)phenol), is introduced and investigated. Through modifying the ligands on the changeable coordination sites, the intramolecular magnetic interactions and relaxation dynamics in these two Dy(iii)4 SMMs can be tuned. Both complexes exhibit slow relaxation of their magnetization with a relaxation barrier of 114 K for complex 2 while a blocking temperature below 2 K is observed for complex 1. Ab initio calculations reveal that changes in coordination numbers and geometries on the Dy(iii) sites can significantly affect the magnetic interactions as well as single-ion anisotropy. The combination of experimental work and ab initio calculations offers insight into the relationship between structures and magnetic properties and sheds light on the rational design of future polynuclear lanthanide SMMs with enhanced magnetic properties.
Collapse
Affiliation(s)
- Kun Zhang
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, P.R. China.
| | | | | | | | | | | | | |
Collapse
|
20
|
Yu S, Hu Z, Chen Z, Li B, Zhang YQ, Liang Y, Liu D, Yao D, Liang F. Two Dy(III) Single-Molecule Magnets with Their Performance Tuned by Schiff Base Ligands. Inorg Chem 2019; 58:1191-1200. [PMID: 30632372 DOI: 10.1021/acs.inorgchem.8b02637] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
To develop new lanthanide single-molecule magnets (SMMs), two new complexes of [Dy2(MeOH)2(HL1)2(NO3)2]·2MeOH (1) and [Dy6(μ3-OH)2(L2)2(HL2)2(H2L2)2Cl2(EtOH)2]Cl2·3EtOH·CH3CN (2) were obtained by reacting Dy(NO)3·6H2O with 3-amino-1,2-propanediol in the presence of 2-hydroxynaphthaldehyde for 1 and by reacting DyCl3·6H2O with 1,1-di(hydroxymethyl)ethylamine in the presence of 2-hydroxynaphthaldehyde for 2, respectively, in which the Schiff base ligands of 3-(((2-hydroxynaphthaen-1-yl)methylene)amino)-propane-1,2-diol (H3L1) and 2-(β-naphthalideneamino)-2-(hydroxylmethyl)-1-propanol (H3L2) were in situ formed. The two Dy(III) ions in 1 are linked by two Oalkoxy atoms of two (HL1)2- ligands to build a dinuclear skeleton. Complex 2 presents a nearly planar hexanuclear skeleton constructed from four edge-shared triangular Dy3 units with the two peripheral Dy3 units consolidated by two μ3-O bridges and the two central Dy3 units consolidated by one μ3-O bridge. Obviously, they exhibit a different topological arrangement resulting from the linkage of the Schiff base ligands. Both of them are typical SMMs under zero dc fields, with a Ueff/ kB value of 34 K for 1 and 40 K for 2, respectively. Multiple processes are involved in the relaxation processes of 1 and 2. The different SMM performances of the two titled complexes reveal a tuning effect of Schiff base ligands through tuning the coordination environments and topological arrangements of dysprosium(III) ions, which is supported by the theoretical calculations.
Collapse
Affiliation(s)
- Shui Yu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , P. R. China
| | - Zhaobo Hu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , P. R. China
| | - Zilu Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , P. R. China
| | - Bo Li
- College of Chemistry and Pharmaceutical Engineering , Nanyang Normal University , Nanyang 473061 , P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology , Nanjing Normal University , Nanjing 210023 , P. R. China
| | - Yuning Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , P. R. China
| | - Dongcheng Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , P. R. China
| | - Di Yao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , P. R. China
| | - Fupei Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , P. R. China.,Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering , Guilin University of Technology , Guilin 541004 , P. R. China
| |
Collapse
|
21
|
Jiang Z, Sun L, Li M, Wu H, Xia Z, Ke H, Zhang Y, Xie G, Chen S. Solvent-tuned magnetic exchange interactions in Dy2 systems ligated by a μ-phenolato heptadentate Schiff base. RSC Adv 2019; 9:39640-39648. [PMID: 35541401 PMCID: PMC9076079 DOI: 10.1039/c9ra08754k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 11/25/2019] [Indexed: 12/02/2022] Open
Abstract
A series of binuclear dysprosium compounds, namely, [Dy(api)]2 (1), [Dy(api)]2·2CH2Cl2 (2), [Dy(Clapi)]2·2C4H8O (3), and [Dy(Clapi)]2·2C3H6O (4) (H3api = 2-(2-hydroxyphenyl)-1,3-bis[4-(2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazoline; H3Clapi = 2-(2′-hydroxy-5′-chlorophenyl)-1,3-bis[3′-aza-4′-(2′′-hydroxy-5′′-chlorophenyl)prop-4′-en-1′-yl]-1,3-imidazolidine), have been isolated by the reactions of salen-type ligands H3api/H3Clapi with DyCl3·6H2O in different solvent systems. Structural analysis reveals that each salen-type ligand provides a heptadentate coordination pocket (N4O3) to encapsulate a DyIII ion and all of the DyIII centers in 1–4 adopt a distorted square antiprism geometry with D4d symmetry. Magnetic studies showed that compound 1 did not exhibit single-molecule magnetic (SMMs) behavior. With the introduction of different lattice solvents, compounds 2–4 showed filed-induced slow magnetic relaxation with barriers Ueff of 18.2 K (2), 28.0 K (3) and 16.4 K (4), respectively. Ab initio calculations were employed to interpret the magnetization behavior of 1–4. The combination of experimental and theoretical data reveal the importance of the weak exchange interaction between the DyIII ions in the observation of slow magnetic relaxation, and a relaxation mechanism has been developed to rationalize the observed difference in the Ueff values. The different lattice solvents influence Dy–O–Dy bond angles and thus alter the torsion of the square antiprism geometry, consequently resulting in distinct magnetic interactions and the magnetic behavior. Solvent-tuning changes the magnetic exchange interaction and results in different magnetic relaxation dynamics in Dy2 systems ligated by a μ-phenolato heptadentate Schiff base.![]()
Collapse
Affiliation(s)
- Zhijie Jiang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Lin Sun
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Min Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Haipeng Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Zhengqiang Xia
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Hongshan Ke
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Yiquan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- China
| |
Collapse
|
22
|
Ma X, Chen B, Zhang YQ, Yang J, Shi Q, Ma Y, Liu X. Enhancing single-molecule magnet behaviour through decorating terminal ligands in Dy2 compounds. Dalton Trans 2019; 48:12622-12631. [DOI: 10.1039/c9dt02758k] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The alternation of terminal substituents on ligands results in different dynamic magnetic behaviors in two Dy2 single-molecule magnets.
Collapse
Affiliation(s)
- 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
| | - Bingbing Chen
- 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
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Jinhui Yang
- 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
| | - Quan Shi
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Yulong 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
| | - 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
| |
Collapse
|
23
|
Huang G, Yi X, Gendron F, Le Guennic B, Guizouarn T, Daiguebonne C, Calvez G, Suffren Y, Guillou O, Bernot K. A supramolecular chain of dimeric Dy single molecule magnets decorated with azobenzene ligands. Dalton Trans 2019; 48:16053-16061. [DOI: 10.1039/c9dt03540k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
DyIII dimers decorated with photo-isomerizable azobenzene ligands behave as single-molecule magnets and self-organize into a supramolecular chain. Ab initio calculations, magnetic and optical properties are reported.
Collapse
|
24
|
Lu J, Li XL, Zhu Z, Liu S, Yang Q, Tang J. Linear hexanuclear helical dysprosium single-molecule magnets: the effect of axial substitution on magnetic interactions and relaxation dynamics. Dalton Trans 2019; 48:14062-14068. [DOI: 10.1039/c9dt03101d] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Structural modification of the Dy6 cores of [Dy6L3(SCN)6(DMF)8]·4DMF (1) and [Dy6L3(NO3)6(DMF)4(H2O)2]·8DMF (2) results in the transition of magnetic relaxation behavior from single relaxation to multiple relaxation.
Collapse
Affiliation(s)
- Jingjing Lu
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Xiao-Lei Li
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Zhenhua Zhu
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Shuting Liu
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Qianqian Yang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| |
Collapse
|
25
|
Kalita P, Goura J, Manuel Herrera Martínez J, Colacio E, Chandrasekhar V. Homodinuclear {LnIII
2
} (LnIII
= GdIII
, TbIII
, HoIII
, and DyIII
) Complexes: Field-Induced SMM Behavior of the DyIII
and TbIII
Analogues. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801049] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Pankaj Kalita
- School of Chemical Sciences; National Institute of Science Education and Research, HBNI; 752050, Odisha Bhubaneswar Jatni, Khurda - India
| | - Joydeb Goura
- School of Chemical Sciences; National Institute of Science Education and Research, HBNI; 752050, Odisha Bhubaneswar Jatni, Khurda - India
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
| | - Juan Manuel Herrera Martínez
- Departamento de Química Inorgánica; Facultad de Ciencias, Universidad de Granada; Avenida de Fuentenueva s/n 18071 Granada Spain
| | - Enrique Colacio
- Departamento de Química Inorgánica; Facultad de Ciencias, Universidad de Granada; Avenida de Fuentenueva s/n 18071 Granada Spain
| | - Vadapalli Chandrasekhar
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
- Tata Institute of Fundamental Research; 500 107 Gopanpally, Hyderabad - India
| |
Collapse
|
26
|
Li LF, Zhang L, Xu Y, Zhu LL, Yang PP. Synthesis, crystal structure, and magnetic properties of a series of binuclear lanthanide compounds derived from the 4-Bromo-2-((quinolin-8-ylimino)methyl)phenol ligand. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.07.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
27
|
Guo M, Zhang YQ, Zhu Z, Tang J. Dysprosium Compounds with Hula-Hoop-like Geometries: The Influence of Magnetic Anisotropy and Magnetic Interactions on Magnetic Relaxation. Inorg Chem 2018; 57:12213-12221. [DOI: 10.1021/acs.inorgchem.8b01878] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mei Guo
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Zhenhua Zhu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| |
Collapse
|
28
|
Zhang WY, Chen P, Li HF, Zhang YQ, Yan PF, Sun WB. Dinuclear Dy 2 Single-Molecule Magnets: Functional Modulation on the Bridging Ligand and Different Relaxation Performances within the Single-Crystal to Single-Crystal System. Chem Asian J 2018; 13:1725-1734. [PMID: 29663704 DOI: 10.1002/asia.201800418] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/13/2018] [Indexed: 11/08/2022]
Abstract
Crystal structures, single-molecule magnetic behavior, and ab initio calculations of four new phenoxo-bridged dinuclear dysprosium complexes and their gadolinium(III) analogues are explored. Complexes [Dy2 (DMOMP)2 (DBM)4 ]2 ⋅CHCl3 (1; DMOMP=1-methyl-3,5-dimethoxy-4-hydroxybenzene, DBM=1,3-diphenylpropane-1,3-dione); [Dy2 (DMOAP)2 (DBM)4 ]2 ⋅CHCl3 (2; DMOAP=syringaldehyde); Dy2 (DMOEP)2 (DBM)4 (3; DMOEP=methyl syringate); and solvent-free Dy2 (DMOMP)2 (DBM)4 (4), which is obtained by the transformation of single crystal into single crystal from 1, have nearly identical core structures and only differ in the substituents at the para position of the phenol moieties of the bridging ligand. In this system, the electronic effects are efficiently implemented to significantly modify the ligand field strength and exchange coupling by modulating the substituents on the phenol backbone. The effective energy barrier (Ueff ) of magnetization reversal is improved significantly to fivefold magnitude, at most, and the hysteresis temperature up to 3.5 K by deliberately using the electron-withdrawing substituent to replace the electron-donating one. The origin of the two relaxation processes in 1 is mostly attributed to the existence of two molecules in one unit, which is illuminated by means of the transformation of single crystal into single crystal.
Collapse
Affiliation(s)
- Wan-Ying Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China
| | - Peng Chen
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China
| | - Hong-Feng Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, 210023, Nanjing, P.R. China
| | - Peng-Fei Yan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China
| | - Wen-Bin Sun
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China.,Key Laboratory of Chemical Engineering Process, & Technology for High-efficiency Conversion, College of Heilongjiang Province, P.R. China
| |
Collapse
|
29
|
Zhang K, Montigaud V, Cador O, Li GP, Le Guennic B, Tang JK, Wang YY. Tuning the Magnetic Interactions in Dy(III)4 Single-Molecule Magnets. Inorg Chem 2018; 57:8550-8557. [DOI: 10.1021/acs.inorgchem.8b01269] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kun Zhang
- School of Textile Science and Engineering, Xi’an Polytechnic University, Xi’an 710048, PR China
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, PR China
| | - Vincent Montigaud
- Université Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Olivier Cador
- Université Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Gao-Peng Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, PR China
| | - Boris Le Guennic
- Université Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Jin-Kui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, PR China
| |
Collapse
|
30
|
Structures and magnetic properties of phenoxo-O-bridged dinuclear lanthanide(III) compounds: Single-molecule magnet behaviour and magnetic refrigeration. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.01.037] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
31
|
Horii Y, Kishiue S, Damjanović M, Katoh K, Breedlove BK, Enders M, Yamashita M. Supramolecular Approach for Enhancing Single-Molecule Magnet Properties of Terbium(III)-Phthalocyaninato Double-Decker Complexes with Crown Moieties. Chemistry 2018; 24:4320-4327. [PMID: 29265595 DOI: 10.1002/chem.201705378] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Indexed: 11/10/2022]
Abstract
A TbIII -phthalocyaninato double-decker ([1]0 ) single-molecule magnet (SMM) having four 15-crown-5 moieties in one of the ligands was synthesized, and its dimerization and magnetic properties were studied in an attempt to utilize the supramolecular aggregation for enhancing the SMM properties. Aggregation of [1]0 to form [12 K4 ]4+ in the presence of K+ ions was studied by using UV/Vis-NIR absorption and NMR spectroscopies. For the magnetic measurements, [1]0 and [12 K4 ]4+ were dispersed in poly(methyl methacrylate) (PMMA). UV/Vis-NIR absorption measurements on the PMMA dispersed samples were used to track the formation of [12 K4 ]4+ . Direct current (DC) magnetic susceptibility measurements revealed that there were ferromagnetic Tb-Tb interactions in [12 K4 ]4+ , whereas there was no indication of ferromagnetic interactions in [1]0 . Upon the formation of [12 K4 ]4+ from [1]0 and K+ ions, the temperature at which the magnetic hysteresis occurred increased from 7 to 15 K. In addition, the area of magnetic hysteresis became larger for [12 K4 ]4+ , meaning that SMM properties of [12 K4 ]4+ are superior to those of [1]0 . Alternating current (AC) magnetic measurements were used to confirm this observation. Magnetic relaxation times at 2 K increased 1000-fold upon dimerization of [1]0 to [12 K4 ]4+ , demonstrating the effectiveness of using K+ ions to induce dimer formation for the improvement of the SMM properties.
Collapse
Affiliation(s)
- Yoji Horii
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Shuhei Kishiue
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Marko Damjanović
- Physikalisches Institut and Institute of Nanotechnology, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, Karlsruhe, 76131, Germany.,Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Brian K Breedlove
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Markus Enders
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 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
| |
Collapse
|
32
|
Ghosh S, Mandal S, Singh MK, Liu CM, Rajaraman G, Mohanta S. Experimental and theoretical exploration of magnetic exchange interactions and single-molecule magnetic behaviour of bis(η1:η2:μ2-carboxylate)GdIII2/DyIII2 systems. Dalton Trans 2018; 47:11455-11469. [DOI: 10.1039/c8dt02008f] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This investigation demonstrates differences in SMM properties and nature of magnetic exchange in closely related DyIII2/GdIII2 compounds.
Collapse
Affiliation(s)
- Sagar Ghosh
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | - Shuvankar Mandal
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | - Mukesh Kumar Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences
- Centre for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Gopalan Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | | |
Collapse
|
33
|
Wang WM, Kang XM, Shen HY, Wu ZL, Gao HL, Cui JZ. Modulating single-molecule magnet behavior towards multiple magnetic relaxation processes through structural variation in Dy4 clusters. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00214b] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Three Dy4 clusters based on a flexible and attractive Schiff base ligand HL have been synthesized, and they showed different tetranuclear core arrangements. Magnetic studies reveal that clusters 1–3 display distinct slow relaxation of magnetization.
Collapse
Affiliation(s)
- Wen-Min Wang
- Department of Chemistry
- Tianjin University
- Tianjin
- PR China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
| | - Xiao-Min Kang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Nankai University
- Tianjin 300071
- PR China
| | - Hai-Yun Shen
- Department of Chemistry
- Tianjin University
- Tianjin
- PR China
| | - Zhi-Lei Wu
- Department of Chemistry
- Tianjin University
- Tianjin
- PR China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
| | - Hong-Ling Gao
- Department of Chemistry
- Tianjin University
- Tianjin
- PR China
| | - Jian-Zhong Cui
- Department of Chemistry
- Tianjin University
- Tianjin
- PR China
| |
Collapse
|
34
|
Qin Y, Jing Y, Ge Y, Liu W, Li Y, Zhang YQ. Enhanced energy barriers triggered by magnetic anisotropy modulation via tuning the functional groups on the bridging ligands in Dy2 single-molecule magnets. Dalton Trans 2018; 47:15197-15205. [DOI: 10.1039/c8dt03506g] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two dinuclear dysprosium complexes of 1 and 2 have been synthesized and both of them exhibit SMM behavior. The energy barrier is enhanced ca. 35 K by elaborately tuning the backbones of the ligands.
Collapse
Affiliation(s)
- Yaru Qin
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Yu Jing
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Yu Ge
- 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
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| |
Collapse
|
35
|
Qin Y, Ge Y, Zhang S, Sun H, Jing Y, Li Y, Liu W. A series of Ln4III clusters: Dy4 single molecule magnet and Tb4 multi-responsive luminescent sensor for Fe3+, CrO42−/Cr2O72− and 4-nitroaniline. RSC Adv 2018; 8:12641-12652. [PMID: 35541266 PMCID: PMC9079637 DOI: 10.1039/c8ra01485j] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Accepted: 03/26/2018] [Indexed: 12/31/2022] Open
Abstract
Five tetranuclear lanthanide clusters were synthesized. Dy4 complex exhibits single molecule magnet (SMM) behavior and Tb4 compound shows sensing properties towards Fe3+, CrO42−, Cr2O72− and 4-nitroaniline (4-NA).
Collapse
Affiliation(s)
- Yaru Qin
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Yu Ge
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Shasha Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Hao Sun
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Yu Jing
- 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
| | - Wei Liu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| |
Collapse
|
36
|
|
37
|
Qin Y, Zhang H, Sun H, Pan Y, Ge Y, Li Y, Zhang YQ. Two Series of Homodinuclear Lanthanide Complexes: Greatly Enhancing Energy Barriers through Tuning Terminal Solvent Ligands in Dy 2 Single-Molecule Magnets. Chem Asian J 2017; 12:2834-2844. [PMID: 28840651 DOI: 10.1002/asia.201701065] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 08/23/2017] [Indexed: 11/10/2022]
Abstract
The utilization of 2-ethoxy-6-{[(2-hydroxy-3-methoxybenzyl)imino]methyl}phenol (H2 L) as a chelating ligand, in combination with the employment of alcohols (EtOH and MeOH) as auxiliary ligands, in 4 f-metal chemistry afforded two series of dinuclear lanthanide complexes of compositions [Ln2 L2 (NO3 )2 (EtOH)2 ] (Ln=Sm (1), Eu (2), Gd (3), Tb (4), Dy (5), Ho (6), Er (7)) and [Ln2 L2 (NO3 )2 (MeOH)2 ] (Ln=Sm (8), Eu (9), Gd (10), Tb (11), Dy (12), Ho (13), Er (14)). The structures of 1-14 were determined by single-crystal X-ray crystallography. Complexes 1-7 are isomorphous. The two lanthanide(III) ions in 1-7 are doubly bridged by two deprotonated aminophenoxide oxygen atoms of two μ2 :η0 :η1 :η2 :η1 :η1 :η0 -L2- ligands. One nitrogen atom, two oxygen atoms of the NO3- anion, two methoxide oxygen atoms of two ligand sets, and one oxygen atom of the terminally coordinated EtOH molecule complete the distorted dodecahedron geometry of each lanthanide(III) ion. Compounds 8-14 are isomorphous and their structures are similar to those of 1-7. The slight difference between 1-7 and 8-14 stems from purposefully replacing the EtOH ligands in 1-7 with MeOH in 8-14. Direct-current magnetic susceptibility studies in the 2-300 K range reveal weak antiferromagnetic interactions for 3, 4, 7, 10, 11, and 14, and ferromagnetic interactions at low temperature for 5, 6, 12, and 13. Complexes 5 and 12 exhibit single-molecule magnet (SMM) behavior with energy barriers of 131.3 K for 5 and 198.8 K for 12. The energy barrier is significantly enhanced by dexterously regulating the terminal ligands. To rationalize the observed difference in the magnetic behavior, complete-active-space self-consistent field (CASSCF) calculations were performed on two Dy2 complexes. Subtle variation in the angle between the magnetic axes and the vector connecting two dysprosium(III) ions results in a weaker influence on the tunneling gap of individual dysprosium(III) ions by the dipolar field in 12. This work proposes an efficient strategy for synthesizing Dy2 SMMs with high energy barriers.
Collapse
Affiliation(s)
- Yaru Qin
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Haifeng Zhang
- Department of Chemistry and Chemical Engineering, Jining University, Qufu, 273155, P.R. China
| | - Hao Sun
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yangdan Pan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yu Ge
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yahong Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing, 210023, P.R. China
| |
Collapse
|
38
|
Wang WM, Zhao XY, Qiao H, Bai L, Han HF, Fang M, Wu ZL, Zou JY. Modulating the single-molecule magnet behaviour in phenoxo-O bridged Dy2 systems via subtle structural variations. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.05.038] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
39
|
Li Y, Zhao P, Zhang S, Li R, Zhang YQ, Yang EC, Zhao XJ. A Rare Water and Hydroxyl-Extended One-Dimensional Dysprosium(III) Chain and Its Magnetic Dilution Effect. Inorg Chem 2017; 56:9594-9601. [DOI: 10.1021/acs.inorgchem.7b01058] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan Li
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Pu Zhao
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Shan Zhang
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Rui Li
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for
NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, People’s Republic of China
| | - En-Cui Yang
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Xiao-Jun Zhao
- College of Chemistry,
Key Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, People’s Republic of China
| |
Collapse
|
40
|
Boča R, Stolárová M, Falvello LR, Tomás M, Titiš J, Černák J. Slow magnetic relaxations in a ladder-type Dy(iii) complex and its dinuclear analogue. Dalton Trans 2017; 46:5344-5351. [PMID: 28382333 DOI: 10.1039/c7dt00069c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The complex {[Dy2(PDOA)3(H2O)6]·2H2O}n (1) (H2PDOA = 1,2-phenylenedioxydiacetic acid) was prepared from aqueous solution. Its crystal structure, built up of {-Dy-O-C-O-}n chains interlinked by PDOA ligands yielding a ladder-like arrangement, was determined at 173 K. 1 exhibits slow magnetic relaxation under a small magnetic field BDC = 0.2 T with two (LF and HF) relaxation channels. The LF relaxation time at BDC = 0.2 T and T = 1.85 K is as slow as τ(LF) = 46 ms whereas the HF channel is τ(HF) = 1.4 ms. The mole fraction of the LF species is xLF = 0.76 at 1.85 K and it escapes progressively on heating. In the dinuclear analogue [Dy2(PDOA)3(H2O)6]·3.5H2O (2) one PDOA ligand forms a bis(chelate) bridge between the two Dy(iii) atoms yielding a local structure analogous to that in 1; however its AC susceptibility data show slightly different quantitative characteristics of the single-molecule magnetic behaviour.
Collapse
Affiliation(s)
- R Boča
- Department of Chemistry, FPV, University of SS Cyril and Methodius, 917 01 Trnava, Slovakia
| | | | | | | | | | | |
Collapse
|
41
|
Zhang K, Guo FS, Wang YY. Synthesis, crystal structure and magnetic properties of a dinuclear dysprosium single-molecule magnet. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
42
|
Zhang K, Guo FS, Wang YY. Two {Dy2} single-molecule magnets formed via an in situ reaction by capturing CO2 from atmosphere under ambient conditions. Dalton Trans 2017; 46:1753-1756. [DOI: 10.1039/c6dt04751c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Under ambient conditions, CO2 was captured from the atmosphere, and then reduced and sequestrated into two {Dy2} single-molecule magnets.
Collapse
Affiliation(s)
- Kun Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry & Materials Science
- Northwest University
- Xi'an
| | - Fu-Sheng Guo
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry & Materials Science
- Northwest University
- Xi'an
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry & Materials Science
- Northwest University
- Xi'an
| |
Collapse
|
43
|
Machata M, Herchel R, Nemec I, Trávníček Z. Crystal structures and magnetic properties of two series of phenoxo-O bridged dinuclear Ln2 (Ln = Gd, Tb, Dy) complexes. Dalton Trans 2017; 46:16294-16305. [DOI: 10.1039/c7dt03441e] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different solvent molecules as ligands in the molecular structures of the dinuclear Ln(iii) Schiff base complexes (Ln = Gd, Tb, and Dy) influenced the magnetic properties of the Dy(iii) derivatives.
Collapse
Affiliation(s)
- Marek Machata
- 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
| | - Ivan Nemec
- 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
| |
Collapse
|