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Mao PD, Zhang SH, Yao NT, Sun HY, Yan FF, Zhang YQ, Meng YS, Liu T. Regulating Magnetic Relaxations of Cyano-Bridged {Dy III Mo V } Systems by Tuning the N-Sites in β-Diketone Ligands. Chemistry 2023; 29:e202301262. [PMID: 37272418 DOI: 10.1002/chem.202301262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/28/2023] [Accepted: 05/30/2023] [Indexed: 06/06/2023]
Abstract
Cyano-bridged 4d-4f molecular nanomagnets have re-called increasing research interests in molecular magnetism since they offer more possibilities in achieving novel nanomagnets with versatile structures and magnetic interactions. In this work, four β-diketone ligands bearing different substitution N-sites were designed and synthesized, namely 1-(2-pyridyl)-3-(3-pyridyl)-1,3-propanedione (HL1 ), 1,3-Bis (3-pyridyl)-1,3-propanedione (HL2 ), 1-(4-pyridyl)-3-(3-pyridyl)-1,3-propanedione (HL3 ), and 1,3-Bis (4-pyridyl)-1,3-propanedione (HL4 ), to tune the magnetic relaxation behaviors of cyano-bridged {DyIII MoV } systems. By reacting with DyCl3 ⋅ 6H2 O and K4 Mo(CN)8 ⋅ 2H2 O, four cyano-bridged complexes, namely {[Dy[MoV (CN)8 ](HL1 )2 (H2 O)3 ]} ⋅ 6H2 O (1), {[Dy[MoV (CN)8 ](HL2 )(H2 O)3 (CH3 OH)]}2 ⋅ 2CH3 OH ⋅ 3H2 O (2), {[Dy[MoV (CN)8 ](HL3 )(H2 O)2 (CH3 OH)] ⋅ H2 O}n (3), and {[Dy[MoV (CN)8 ](HL4 )2 (H2 O)3 ]} ⋅ 2H2 O⋅CH3 OH (4) were obtained. Structural analyses revealed that 1 and 4 are binuclear complexes, 2 has a tetragonal structure, and 3 exhibits a stair-like polymer chain structure. The DyIII ions in all complexes have eight-coordinated configurations with the coordination spheres DyO7 N1 for 1 and 4, DyO6 N2 for 2, and DyO5 N3 for 3. Magnetic measurements indicate that 1 is a zero-field single-molecule magnet (SMM) and complexes 2-4 are field-induced SMMs, with complex 4 featuring a two-step relaxation process. The magnetic characterizations and ab initio calculations revealed that changing the N-sites in the β-diketone ligands can effectively alter the structures and magnetic properties of cyano-bridged 4d-4f nanomagnets by adjusting the coordination environments of the DyIII centers.
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Affiliation(s)
- Pan-Dong Mao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Shi-Hui Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Nian-Tao Yao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Hui-Ying Sun
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Fei-Fei Yan
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yi-Quan Zhang
- Jiangsu Key Lab for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing, 210023, China
| | - Yin-Shan Meng
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
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Peng G, Yang Q, Chen Y, Dong XT, Zhang Z, Ren X. Single molecule magnet behavior and luminescence of {Ln4} and {LnZn} complexes. Dalton Trans 2022; 51:12484-12493. [DOI: 10.1039/d2dt01365g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A serials of tetranuclear coordination clusters [Ln4L2(HL)2(μ3-OH)2(NO3)2](NO3)2 [Ln = Dy (1•3CH3CN•5H2O), Gd (2•4CH3CN•5H2O), H2L = 6,6'-dimethoxy-2,2'-[2,2-dimethylpropane-1,3-diylbis-(nitrilomethylidyne)] diphenol] and dinuclear complexes [LnZnL(NO3)3(H2O)]•2CH3CN [Ln = Dy (3), Er (4), Yb (5), Lu...
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4
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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.
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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.
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Chang YX, Gao N, Wang MY, Wang WT, Fan ZW, Ren DD, Wu ZL, Wang WM. Two phenoxo-O bridged dinuclear Dy(III) complexes exhibiting distinct slow magnetic relaxation induced by different β-diketonate ligands. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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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]
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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.
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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
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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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Wang YJ, Wu DF, Gou J, Duan YY, Li L, Chen HH, Gao HL, Cui JZ. Modulation of the properties of dinuclear lanthanide complexes through utilizing different β-diketonate co-ligands: near-infrared luminescence and magnetization dynamics. Dalton Trans 2020; 49:2850-2861. [DOI: 10.1039/c9dt04093e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Four Dy2 complexes based on the ligand H2L display various slow magnetic relaxation behaviors through utilizing different β-diketonate co-ligands.
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Affiliation(s)
- Yun-Juan Wang
- Department of Chemistry
- Tianjin University
- Tianjin
- China
| | - Dong-Fang Wu
- Department of Chemistry
- Tianjin University
- Tianjin
- China
| | - Jian Gou
- Department of Chemistry
- Tianjin University
- Tianjin
- China
| | - Yao-Yao Duan
- Department of Chemistry
- Tianjin University
- Tianjin
- China
| | - Ling Li
- 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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Li L, Gou J, Wu DF, Wang YJ, Duan YY, Chen HH, Gao HL, Cui JZ. Near-infrared luminescence and magnetic properties of dinuclear rare earth complexes modulated by β-diketone co-ligands. NEW J CHEM 2020. [DOI: 10.1039/d0nj00164c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The magnetic properties of complexes based on a Schiff base ligand H2L can be modulated by subtle changes in the coordination environment resulting from changes in the co-ligand substituents.
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Affiliation(s)
- Ling Li
- Department of Chemistry
- Tianjin University
- Tianjin
- China
| | - Jian Gou
- Department of Chemistry
- Tianjin University
- Tianjin
- China
| | - Dong-Fang Wu
- Department of Chemistry
- Tianjin University
- Tianjin
- China
| | - Yun-Juan Wang
- 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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Wang WM, Zhang L, Li XZ, He LY, Wang XX, Shi Y, Wang J, Dong J, Wu ZL. Structures, fluorescence properties and magnetic properties of a series of rhombus-shaped LnIII4 clusters: magnetocaloric effect and single-molecule-magnet behavior. NEW J CHEM 2019. [DOI: 10.1039/c9nj02872b] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family LnIII4 clusters were successfully synthesized and structurally characterized. Magnetic studies show that Gd4 cluster displays magnetic refrigeration, while Dy4 cluster demonstrates two distinct slow magnetic relaxation processes.
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Affiliation(s)
- Wen-Min Wang
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
| | - Li Zhang
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Xian-Zhen Li
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Li-Yuan He
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Xin-Xin Wang
- Department of Chemistry
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Ying Shi
- Department of Biology
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Jie Wang
- Department of Biology
- Taiyuan Normal University
- Jinzhong 030619
- China
| | - Jie Dong
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Nankai University
- Tianjin 300071
- China
- Department of Chemistry
| | - Zhi-Lei Wu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Nankai University
- Tianjin 300071
- China
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