Six-nuclear dysprosium cluster cyclic complex unimolecular magnetic body and preparation method thereof

A single-molecule magnet and complex technology, applied in the field of hexanuclear dysprosium cluster cyclic complex single-molecule magnet and its preparation, can solve the problems of poor repeatability, complex synthesis method of single-molecule magnet, low controllability, etc., and achieve performance Excellent, reducing quantum tunneling effect, high controllability effect

Active Publication Date: 2019-10-01
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex synthesis method, low controllability and poor repeatability in the rare earth complex single-molecule magnet prepared by the existing method

Method used

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  • Six-nuclear dysprosium cluster cyclic complex unimolecular magnetic body and preparation method thereof
  • Six-nuclear dysprosium cluster cyclic complex unimolecular magnetic body and preparation method thereof
  • Six-nuclear dysprosium cluster cyclic complex unimolecular magnetic body and preparation method thereof

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specific Embodiment approach 1

[0020] Specific implementation mode 1: This implementation mode is a hexanuclear dysprosium cluster ring complex single-molecule magnet whose chemical formula is [Dy 6 (H 2 sh) 6 (2-pyca) 6 (2-pyca-) 6], molecular formula is C 114 h 90 Dy 6 N 18 o 42 ; The single-molecule magnet of the hexanuclear dysprosium cluster ring complex belongs to the monoclinic crystal system, the space group P21 / c, and the unit cell parameters are: a=14.52, b=18.11, α=90°, β=104.07°, γ=90°;

[0021] This embodiment [Dy 6 (H 2 sh) 6 (2-pyca) 6 (2-pyca - ) 6 ] in H 2 shi is salicylic hydroxamic acid that has lost a proton, 2-pyca is pyridine-2-carboxylic acid, and the structural formula of salicylic hydroxamic acid is The structural formula of pyridine-2-carboxylic acid is

specific Embodiment approach 2

[0022] Specific embodiment two: this embodiment is: a kind of preparation method of hexanuclear dysprosium cluster cyclic complex single-molecule magnet is completed according to the following steps:

[0023] Salicylhydroxamic acid, pyridine-2-carboxylic acid and Dy(NO 3 ) 3 ·6H 2 O is dissolved in the solvent, sonicated until the solution is clarified to obtain a mixed solution A; in the solution A, salicylhydroxamic acid, pyridine-2-carboxylic acid and Dy(NO 3 ) 3 ·6H 2 The molar ratio of O is 1:2:1; the volume ratio of the mass of salicylic hydroxamic acid in the solution A to the solvent is (0.0011g~0.0013g): 1mL; the mixed solution A is heated to reflux under stirring for 1h ~2h, the temperature of the heating and reflux reaction is 90℃~100℃, and the solution B is obtained; add pyridine to the solution B cooled to room temperature, and then heat and reflux for 10min~20min under the condition of stirring, and the temperature of the heating and reflux reaction is 90℃ A...

specific Embodiment approach 3

[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the solvent is a mixture of methanol and acetonitrile, and the volume ratio of methanol and acetonitrile is 1:3. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a unimolecular magnetic body and a preparation method thereof, in particular to a six-nuclear dysprosium cluster cyclic complex unimolecular magnetic body and a preparation method thereof, and aims to solve the problem that a rare earth complex unimolecular magnetic body prepared by using an existing method is complicated in synthesis method, low in controllability and poor in repeatability. The chemical formula of the six-nuclear dysprosium cluster cyclic complex unimolecular magnetic body is [Dy6(H2shi)6(2-pyca)6(2-pyca-)6], and the molecular formula is C114H90Dy6N18O42. The method comprises the steps that salicylhydroxamic acid, picolinic acid and Dy(NO3)3 6H2O are dissolved into a solvent, and a mixed solution is obtained through ultrasonic treatment; the mixedsolution is subjected to heating reflux, pyridine is added, and a preform is obtained; the preform is subjected to solvent evaporation, and the six-nuclear dysprosium cluster cyclic complex unimolecular magnetic body is obtained. By means of the preparation method, the six-nuclear dysprosium cluster cyclic complex unimolecular magnetic body can be obtained.

Description

technical field [0001] The invention relates to a hexanuclear dysprosium cluster ring complex single-molecule magnet and a preparation method thereof. Background technique [0002] Single-molecular magnets (Single–Molecular Magnets, SMMs) are new materials between molecular-based magnets and nanomagnetic materials. Because of its potential applications in high-density information processing and storage, quantum computing, and molecular spintronics, it has become a research hotspot in the fields of chemistry, physics, and materials science. Among the many branches of single-molecule magnets, the lanthanide atoms are [Ln]4f due to their special electronic structure arrangement. n 6s 2 and [Ln]4f n-1 5d 1 6s 2 (n=1–14), which reflects the characteristics of rare earth elements, such as large number of single electrons, significant anisotropy, and strong spin-orbit coupling, making them ideal for designing single-molecule magnets. At the same time, the study found that the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00H01F1/42
CPCC07F5/003H01F1/42C07B2200/13
Inventor 高婷孙鸥闫鹏飞李洪峰
Owner HEILONGJIANG UNIV
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