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Dysprosium complex constructed with 8-hydroxyquinoline acylhydrazone derivative as a ligand and its synthesis method and application

A technology of hydroxyquinoline acylhydrazone and a synthetic method, which is applied in the fields of organic chemistry, magnetism of organic materials/organic magnetic materials, organic chemistry, etc., can solve problems such as no unified explanation of the magnetic action mechanism of single-molecule magnets, and achieve synthesis Simple method, good repeatability and low cost

Active Publication Date: 2019-06-28
广州清瑞生物科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the relevant research has made great progress, there is still no unified explanation for the magnetic mechanism of single-molecule magnets, and the relationship between the structure and magnetism of single-molecule magnets is still the mainstream in the field of single-molecule magnet research at this stage.
With the rapid development of information technology, scientists have put forward higher requirements for the research on nano-magnetic materials and their various performance parameters. More and more magnetic materials with practical value have been synthesized, but there is no molecular formula yet. for C 34 h 21 Cl 2 DyN 6 o 4 Related reports on dysprosium complexes constructed with 8-hydroxyquinoline acylhydrazone derivatives as ligands

Method used

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  • Dysprosium complex constructed with 8-hydroxyquinoline acylhydrazone derivative as a ligand and its synthesis method and application
  • Dysprosium complex constructed with 8-hydroxyquinoline acylhydrazone derivative as a ligand and its synthesis method and application
  • Dysprosium complex constructed with 8-hydroxyquinoline acylhydrazone derivative as a ligand and its synthesis method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take the ligand 2-formyl-8-hydroxyquinoline-2-chloro-benzoylhydrazone (0.025mmol, 8.1mg) and Dy(NO 3 ) 3 ·6H 2O (0.025mmol, 11.4mg), was added to a Pyrex tube with a length of about 18cm that was closed at one end, and 0.9mL of CH 3 OH and 0.3mL H 2 O, add 1 drop of triethylamine dropwise, shake gently (the pH of the solution at this time = 8.1), seal the other end of the tube under vacuum conditions, and then keep it at 80°C for 72 hours, take it out, and use Cotton wool wrapped the Pyrex tube tightly and let it cool down to room temperature slowly, and dark red strip crystals were precipitated, with a yield of about 17% (calculated by Dy). Elemental analysis (%) (C 34 h 21 Cl 2 DyN 6 o 4 ), experimental value: C, 50.28, H, 2.74, N, 10.35; theoretical value: C, 50.35, H, 2.61, N, 10.36.

[0035] The product obtained in Example 1 is characterized:

[0036] 1) Infrared characterization:

[0037] Use American Nicolet 360 FT-IR type Fourier transform infrared sp...

Embodiment 2

[0057] Repeat Example 1, the difference is:

[0058] 1) The ratio of methanol and water in the mixed solvent is 2:1, and the total amount of the mixed solvent remains unchanged;

[0059] 3) Adjust the pH value of the solution to 8.2.

[0060] Take out the Pyrex tube, wrap the Pyrex tube tightly with cotton wool and let it cool down to room temperature slowly, deep red strip crystals are precipitated at the bottom of the Pyrex tube. Yield 22%.

[0061] The resulting product was characterized for its structure, and it was determined that the product was the target product [Dy(HL)(L)], wherein L was 2-formyl-8-hydroxyquinoline-2-chloro-benzoylhydrazone to remove the hydroxyl hydrogen atom and A hydrogen atom on the acylhydrazone nitrogen carries two units of negative charge; HL is 2-formyl-8-hydroxyquinoline-2-chloro-benzoylhydrazone, which removes the hydroxyl hydrogen atom and carries one unit of negative charge.

[0062] Characterization of the magnetic properties of the ob...

Embodiment 3

[0064] Repeat Example 1, the difference is:

[0065] 1) The ratio of methanol and water in the mixed solvent is 1:3, and the total amount of the mixed solvent remains unchanged;

[0066] 2) adjust the pH value of the solution to 8.3;

[0067] 3) Change the reaction temperature to 60°C and the reaction time to 80h.

[0068] Take out the Pyrex tube, wrap the Pyrex tube tightly with cotton wool and let it cool down to room temperature slowly, deep red strip crystals are precipitated at the bottom of the Pyrex tube. Yield 25%.

[0069] The resulting product was characterized for its structure, and it was determined that the product was the target product [Dy(HL)(L)], wherein L was 2-formyl-8-hydroxyquinoline-2-chloro-benzoylhydrazone to remove the hydroxyl hydrogen atom and A hydrogen atom on the acylhydrazone nitrogen carries two units of negative charge; HL is 2-formyl-8-hydroxyquinoline-2-chloro-benzoylhydrazone, which removes the hydroxyl hydrogen atom and carries one unit ...

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Abstract

The invention discloses a dysprosium complex constructed by taking an 8-hydroxyquinoline hydrazone derivative as well as a synthesis method and application of the dysprosium complex. The chemical formula of the complex is [Dy(HL)(L)], wherein L is a 2-formyl-8-hydroxyquinoline-2-chloro-benzoyl hydrazinedehydroxylation hydrogen atom and a hydrogen atom on acylhydrazone carbon and carries two units of negative charges; HL is a 2-formyl-8-hydroxyquinoline-2-chloro-benzoyl hydrazinedehydroxylation hydrogen atom and carries one unit of negative charge. The synthesis method of the complex comprises the following steps: dissolving Dy(NO3)3.6H2O2 and 2-formyl-8-hydroxyquinoline-2-chloro-benzoyl hydrazine with a mixed solvent; adjusting the pH value of obtained solution to 7.9-8.5, performing a reaction on the obtained mixed liquor under a heating condition, cooling a reactant and separating crystals, so as to obtain the dysprosium complex. The complex provided by the invention has a field-inducedslow relaxation behavior under low temperature and can be used for preparing a magnetic material.

Description

technical field [0001] The invention relates to a dysprosium complex constructed with 8-hydroxyquinoline acylhydrazone derivatives as a ligand, a synthesis method and application thereof, and belongs to the technical field of magnetic materials. Background technique [0002] In recent years, with the rapid development of quantum computing and information technology revolution, nanomagnetic materials have attracted more and more attention from chemical researchers. Originating from the potential application of single-molecule magnets in high-density information processing and storage, quantum computers, and molecular spintronics, the design and synthesis of single-molecule magnets has become the focus of physics, chemistry, and materials science in the past two decades. research object. Among them, rare earth-based single-molecule magnets have become a research hotspot in the field of single-molecule magnets because of the relatively large number of single electrons and sign...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D215/30H01F1/42
CPCC07B2200/13C07D215/30H01F1/42
Inventor 邹华红黎玲玲梁福沛
Owner 广州清瑞生物科技有限责任公司
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