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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.
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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
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Zhang L, Chen P, Li HF, Tian YM, Yan PF, Sun WB. From zero-dimensional to one-dimensional chain N-oxide bridged compounds with enhanced single-molecule magnetic performance. Dalton Trans 2019; 48:4324-4332. [DOI: 10.1039/c9dt00210c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of zero-dimensional dinuclear dysprosium complexes bridged by pyridine-NO ligands were extended by double N-oxide bridged ligand to series of one-dimensional chain complexes with repeated Dy2 unit, they were structurally and magnetically characterized in this work.
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Affiliation(s)
- Ling Zhang
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education
- School of Chemistry and Material Science Heilongjiang University
- Harbin 150080
- P. R. China
| | - Peng Chen
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education
- School of Chemistry and Material Science Heilongjiang University
- Harbin 150080
- P. R. China
| | - Hong-Feng Li
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education
- School of Chemistry and Material Science Heilongjiang University
- Harbin 150080
- P. R. China
| | - Yong-Mei Tian
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education
- School of Chemistry and Material Science Heilongjiang University
- Harbin 150080
- P. R. China
| | - Peng-Fei Yan
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education
- School of Chemistry and Material Science Heilongjiang University
- Harbin 150080
- P. R. China
| | - Wen-Bin Sun
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education
- School of Chemistry and Material Science Heilongjiang University
- Harbin 150080
- P. R. China
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