A kind of mononuclear dysprosium complex and its preparation method and application

A complex and mononuclear technology, applied in the field of magnetic materials, achieves the effect of simple preparation method, low cost and good repeatability

Active Publication Date: 2019-03-12
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the in-depth study of the relaxation mechanism of single-molecule magnets by scientific researchers and the rapid development of characterization technology, more and more rare-earth single-molecule magnets with practical value have been synthesized, but no chemical formula [ Dy(C 10 h 7 NOBr 2 ) 2 (CH 3 OH)Cl 3 ] Related reports on magnetic materials

Method used

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  • A kind of mononuclear dysprosium complex and its preparation method and application
  • A kind of mononuclear dysprosium complex and its preparation method and application
  • A kind of mononuclear dysprosium complex and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 45 mg (about 0.2 mmol) ligand 2-methyl-5,7-dibromo-8-hydroxyquinoline and 46 mg (about 0.1 mmol) DyCl 3 ·6H 2 Add O to a Pyrex tube with one end closed and about 18cm in length, add 1.0mL CH 3 OH and 0.20mL CH 3 CN, the mixed solvent of composition, dropwise add 2 drops of Et 3 N (the pH value of the solution at this time is 7.1), vacuumize the Pyrex tube, and seal the other end. Place the sealed Pyrex tube at 80°C for 80 hours of heat preservation, take it out, and cool it down to room temperature naturally. Yellow strip crystals can be observed at the bottom of the Pyrex tube. The yield is about 48.9%.

[0034] Characterize the product obtained above:

[0035] 1) Crystal structure analysis:

[0036] The yellow strip crystals with a good surface structure were measured by single crystal diffraction to determine their crystal structure. The obtained crystal structure data are shown in the aforementioned Table 1, and the bond length and bond angle data are shown in...

Embodiment 2

[0050] Repeat Example 1, except that the volume ratio of methanol and acetonitrile in the mixed solvent is changed to 4:1, and the total amount of the mixed solvent added remains unchanged.

[0051] After the Pyrex tube was taken out and naturally cooled to room temperature, yellow strip crystals were precipitated at the bottom of the Pyrex tube. Yield 49%.

[0052] Structural characterization of the resulting product was determined to be the target complex [Dy(HL) 2 (CH 3 OH)Cl 3 ]. Characterization of the magnetic properties of the obtained product shows that the obtained product exhibits field-induced single-molecule magnet behavior at low temperature.

Embodiment 3

[0054] Repeat Example 1, except that the volume ratio of methanol and acetonitrile in the mixed solvent is changed to 3:1, and the total amount of the mixed solvent added remains unchanged.

[0055] After the Pyrex tube was taken out and naturally cooled to room temperature, yellow strip crystals were precipitated at the bottom of the Pyrex tube. Yield 47%.

[0056] Structural characterization of the resulting product was determined to be the target complex [Dy(HL) 2 (CH 3 OH)Cl 3 ]. Characterization of the magnetic properties of the obtained product shows that the obtained product exhibits field-induced single-molecule magnet behavior at low temperature.

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Abstract

The invention discloses a mononuclear dysprosium complex and a preparation method and application thereof. The chemical formula of the complex is [Dy(HL)2(CH3OH)Cl3], wherein HL is 2-methyl-5,7-dibromo-8-hydroxyquinoline. The complex belongs to a monoclinic system and P21 / n space groups. The preparation method of the mononuclear dysprosium complex includes the steps that DyCl3.6H2O and 2-methyl-5,7-dibromo-8-hydroxyquinoline are taken and dissolved with a mixed solvent, the pH of the obtained solution is adjusted to range from 6.5 to 7.8, the obtained mixed liquid reacts under the heating condition, and then the complex is obtained, wherein the mixed solvent is a composition of methyl alcohol and acetonitrile. The preparation method of the complex is simple, the cost is low, good repeatability is achieved, magnetic properties of the complex are shown as field-induced single-molecular magnet behaviors, and the complex can be used for preparing magnetic materials.

Description

technical field [0001] The invention relates to a mononuclear dysprosium complex and its preparation method and application, belonging to the technical field of magnetic materials. Background technique [0002] Due to the special structure, single-molecule magnets exhibit unique magnetic phenomena such as slow relaxation, quantum tunneling, and quantum interference effects, which make them have potential application prospects in quantum computers and ultra-high-density information storage materials. [0003] With the in-depth study of the relaxation mechanism of single-molecule magnets by scientific researchers and the rapid development of characterization technology, more and more rare-earth single-molecule magnets with practical value have been synthesized, but no chemical formula [ Dy(C 10 h 7 NOBr 2 ) 2 (CH 3 OH)Cl 3 ] related reports on magnetic materials. Contents of the invention [0004] The technical problem to be solved by the present invention is to provi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F5/00H01F1/42
CPCC07B2200/13C07F5/00H01F1/42
Inventor 邹华红陈琦梁福沛
Owner GUANGXI NORMAL UNIV
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