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Mononuclear-binuclear eutectic rare earth magnetic complex and preparation method thereof

A complex and magnetic technology, which is applied in the field of single and double-nuclear eutectic rare earth complexes and their preparation, can solve problems such as coordination environment sensitivity, and achieve high purity, simple and easy preparation methods, and good controllability

Active Publication Date: 2019-01-01
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetic relaxation behavior of rare-earth single-molecule magnets is extremely sensitive to the coordination environment of the metal, and it remains a challenging task to efficiently predict the magnetic properties of such complexes.

Method used

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  • Mononuclear-binuclear eutectic rare earth magnetic complex and preparation method thereof
  • Mononuclear-binuclear eutectic rare earth magnetic complex and preparation method thereof
  • Mononuclear-binuclear eutectic rare earth magnetic complex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of mononuclear eutectic magnetic complex {[Tb(thd) 4 ][Tb 2 (thd) 6 (CH 3 COO)][Tmim] 2} The preparation method is specifically prepared according to the following steps:

[0039] 1. The 148.9 mg Tb(thd) 3 2H 2 O and 50.4 mg of TmimI were dissolved in 10 ml of n-pentane and stirred at room temperature for 10 minutes.

[0040] 2. Dissolve 3 mg of glacial acetic acid in 5 ml of n-pentane, slowly add it dropwise into the solution obtained in step 1, and stir and react for 10 minutes at room temperature.

[0041] 3. The reaction solution obtained in step 2 was stirred and reacted at 30°C for 60 minutes.

[0042] 4. Filter the reaction solution obtained in step 3, and slowly volatilize the filtrate at room temperature to obtain the colorless transparent rod-shaped crystals of the mononuclear eutectic magnetic complex.

[0043] The yield of the magnetic complex prepared in this example was 41.2%.

Embodiment 2

[0045] A kind of mononuclear eutectic magnetic complex of the present embodiment {[Dy(thd) 4 ][Dy 2 (thd) 6 (CH 3 COO)][Tmim] 2} The preparation method is specifically prepared according to the following steps:

[0046] 1. Add 224.7 mg Dy(thd) 3 2H 2 O and 50.4 mg of TmimI were dissolved in 10 ml of n-pentane and stirred at room temperature for 10 minutes to obtain a mixed solution.

[0047] 2. Dissolve 3 mg of glacial acetic acid in 5 ml of n-pentane, and slowly add it dropwise into the mixed solution obtained in step 1, and stir and react for 10 minutes at room temperature.

[0048] 3. The reaction solution obtained in step 2 was continuously stirred and reacted at 50° C. for 120 minutes.

[0049] 4. Filter the reaction solution obtained in step 3, and slowly volatilize the filtrate at room temperature to obtain the colorless transparent rod-shaped crystals of the mononuclear eutectic magnetic complex.

[0050] The yield of the magnetic complex prepared in this examp...

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Abstract

The invention discloses mononuclear-binuclear eutectic rare earth magnetic complex and a preparation method thereof. Novel rare earth monomolecular magnetic bodies with different topological structures are synthesized which has an important meaning. A simple formula of the structure is as follows: {[Ln(thd)4][Ln2(thd)6(CH3COO)][Tmim]2}, wherein thd is 2,2,6,6-tetramethylheptanedione anion; Tmim is1,3,4,5-tetramethyl imidazolium cation; and Ln is terbium or dysprosium. According to the magnetic test, alternating-current magnetic susceptibility shows classical single-molecular magnet slow relaxation behaviours under zero fields, and the complex can be used as a molecule based magnetic material for high-density information storage equipment. Tetramethyl imidazolium salt is used for guiding balance ions into a reaction system, so that a self-assembly way between beta-diketone ligand thd and rare-earth ions is controlled; and the obtained mononuclear-binuclear eutectic rare earth magneticcomplex with a novel structure is simple in preparation method, is good in controllability and is high in purity.

Description

technical field [0001] The invention relates to a single-dinonuclear eutectic rare-earth complex with the behavior of a single-molecule magnet and a preparation method thereof. The complex is a trimetallic neutral complex jointly constructed by β-diketone, tetramethylimidazolium and acetate, which can exhibit the slow relaxation behavior of a single-molecule magnet under zero field, and can be used for new high density magnetic storage materials. Background technique [0002] Molecular-based magnetic materials are a class of magnetic compounds formed by chemically anisotropic metal ions and organic ligands through molecular self-assembly. Compared with traditional magnetic materials, these materials have the characteristics of low relative density, high transparency, small size, and easy modification and cutting. They may represent the miniaturization of the microelectronics industry. Used in the field of electronic devices. As one of the important branches of molecular-b...

Claims

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Application Information

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IPC IPC(8): C07F5/00H01F1/42
CPCC07B2200/13C07F5/003H01F1/42
Inventor 葛景园葛成芳陈忠研杜佳霍德璇
Owner HANGZHOU DIANZI UNIV
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