Mononuclear dysprosium complex based on 2-methyl-5,7-dichloro-8-hydroxyquinoline as a ligand and its preparation method and application

A technology of hydroxyquinoline and complexes, which is applied in the directions of organic chemistry method, magnetism of organic materials/organic magnetic materials, organic chemistry, etc., to achieve the effects of good repeatability, simple preparation method and low cost

Active Publication Date: 2019-05-14
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 ...

Method used

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  • Mononuclear dysprosium complex based on 2-methyl-5,7-dichloro-8-hydroxyquinoline as a ligand and its preparation method and application
  • Mononuclear dysprosium complex based on 2-methyl-5,7-dichloro-8-hydroxyquinoline as a ligand and its preparation method and application
  • Mononuclear dysprosium complex based on 2-methyl-5,7-dichloro-8-hydroxyquinoline as a ligand and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0031] 45 mg (about 0.2 mmol) ligand 2-methyl-5,7-dichloro-8-hydroxyquinoline and 46 mg (about 0.1 mmol) Dy(NO 3 ) 3 ·6H 2 O was added to a Pyrex tube with a length of about 18 cm closed at one end, 2 mL of distilled water was added, and 2 drops of triethylamine was added dropwise (at this time, the pH value of the solution was 7.1), the Pyrex tube was evacuated, and the other end was sealed. Place the sealed Pyrex tube at 80°C for 72 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. Yield 63%.

[0032] Characterize the product obtained above:

[0033] 1) Crystal structure analysis:

[0034] The yellow strip crystal with perfect surface structure was measured by single crystal diffraction to determine its crystal structure. The obtained crystal structure data is shown in the aforementioned Table 1, and the bond length and bond angle data are shown in the aforementi...

Embodiment 2

[0048] Repeat Example 1, the difference is: 2-methyl-5,7-dichloro-8-hydroxyquinoline and Dy(NO 3 ) 3 ·6H 2 O was dissolved in 1 mL of distilled water respectively, and then mixed together, and the reaction was carried out after adjusting the pH.

[0049] 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 65%.

[0050] Structural characterization of the resulting product was determined to be the target complex [Dy(L) 3 (H 2 O)]. Characterization of the magnetic properties of the obtained product shows that the obtained product exhibits field-induced slow relaxation magnetic behavior at low temperature.

Embodiment 3

[0052] Repeat Example 1, except that ultrapure water is used instead of distilled water.

[0053] 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 61%.

[0054] Structural characterization of the resulting product was determined to be the target complex [Dy(L) 3 (H 2 O)]. Characterization of the magnetic properties of the obtained product shows that the obtained product exhibits field-induced slow relaxation magnetic behavior at low temperature.

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Abstract

The invention discloses a mononuclear dysprosium complex based on 2-methyl-5,7-dichloro-8-hydroxyquinoline as a ligand and a preparation method and application thereof. The chemical formula of the complex is [Dy (L) 3 (H2O)], wherein L refers to that a hydroxyl hydrogen atom of 2-methyl-5,7-dichloro-8-hydroxyquinoline is removed and 2-methyl-5,7-dichloro-8-hydroxyquinoline carries a negative charge; the complex belongs to a triclinic crystal system and a P-1 space group. The preparation method of the complex comprises the steps that Dy(NO3) 3.6H2O and 2-methyl-5,7-dichloro-8-hydroxyquinoline are obtained and dissolved with water, an obtained solution is adjusted to make the pH equal to 6.5-7.8, mixture liquid reacts under the heating condition, and the complex is obtained. The complex is simple in preparation method, low in cost and good in repeatability, a field-induced slow-relaxation magnetic behavior is presented at low temperature, and the complex can be used for preparing magnetic materials.

Description

technical field [0001] The invention relates to a mononuclear dysprosium complex based on 2-methyl-5,7-dichloro-8-hydroxyquinoline as a ligand, a preparation method and application thereof, and belongs 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 6 NOCl 2 ) 3 (H 2 O)] related reports on magnetic materials. Contents of the invention [0004] The technica...

Claims

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Application Information

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IPC IPC(8): C07D215/30H01F1/42
CPCC07B2200/13C07D215/30H01F1/42
Inventor 邹华红陈琦梁福沛
Owner GUANGXI NORMAL UNIV
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