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Salen-like and diketone-base dysprosium tetranuclear cluster compound type monomolecular magnetic material and preparation method thereof

A single-molecule magnetic, diketo-dysprosium technology, applied in the direction of organic material/organic magnetic material magnetism, chemical instruments and methods, compounds containing periodic table group 3/13 elements, etc., can solve the effective spin inversion Problems such as low energy barrier, to achieve the effect of high effective spin inversion energy barrier, easy operation and simple method

Inactive Publication Date: 2011-06-08
HEILONGJIANG UNIV
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Problems solved by technology

[0005] The present invention solves the technical problem of low effective spin inversion energy barrier of existing dysprosium tetranuclear cluster single-molecule magnetic materials; and provides salen-like and diketone-based dysprosium tetranuclear cluster single-molecule magnetic materials and their preparation method

Method used

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  • Salen-like and diketone-base dysprosium tetranuclear cluster compound type monomolecular magnetic material and preparation method thereof
  • Salen-like and diketone-base dysprosium tetranuclear cluster compound type monomolecular magnetic material and preparation method thereof
  • Salen-like and diketone-base dysprosium tetranuclear cluster compound type monomolecular magnetic material and preparation method thereof

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specific Embodiment approach 1

[0015] Specific implementation mode 1: The molecular formula of the salen-like and diketodysprosium tetranuclear cluster type single-molecule magnetic material in this implementation mode is [Dy 4 (μ 3 -OH) 2 L 2 (acac) 4 ]·H 2 LCH 3 CN, is a dysprosium cluster with a zero-dimensional, tetranuclear and coplanar structure, with an effective spin-inversion energy barrier U eff is 20.72K, and the magnetization relaxation time is τ 0 4.55×10 -6 s.

specific Embodiment approach 2

[0016] Specific embodiment two: the preparation method of the salen-like and diketodysprosium tetranuclear cluster single-molecule magnetic material in this embodiment is carried out through the following steps: step 1, at room temperature, 1,2-cyclohexane Amine salicylaldehyde and acetylacetone are dissolved in an aprotic polar solvent, the amount of acetylacetone is three times the mass of 1,2-cyclohexanediamine salicylaldehyde, and the mass of 1,2-cyclohexanediamine salicylaldehyde The volume ratio with the aprotic polar solvent is 0.33g: 10mL, add an organic base, and the amount of the organic base is twice the amount of cyclohexanediamine glycaldehyde, to obtain mixture A; step 2, adding dysprosium chloride to the protic polar In the neutral solvent, the amount of dysprosium chloride salt is the same as the quality of 1,2-cyclohexanediamine salicylaldehyde, and the mass of dysprosium chloride salt and the volume ratio of the protic polar solvent are 0.33g: 10mL to obtain m...

specific Embodiment approach 3

[0018] Embodiment 3: This embodiment is different from Embodiment 2 in that: the aprotic polar solvent in step 1 is acetonitrile. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention provides a salen-like and diketone-base dysprosium tetranuclear cluster compound type monomolecular magnetic material and a preparation method thereof and relate to a cluster compound and a preparation method thereof. The invention aims at solving the technical problem that the existing dysprosium tetranuclear cluster compound type monomolecular magnetic material has low effective revolving and inverting energy barrier. The molecular formula of the salen-like and diketone-base dysprosium tetranuclear cluster compound type monomolecular magnetic material is [Dy4(mu3-OH)2L2(acac)4].H2LCH3CN. The method comprises the following steps of: firstly, at a room temperature, dissolving 1,2-hexamethylene diamine salicylaldehyde and diacetone in an aprotic polar solvent, and adding organic base to obtain a mixture A; secondly, adding dysprosium chloride salt to a protonic polar solvent to obtain a mixture B; and thirdly, dripping the mixture B in the mixture A, then agitating, reacting, filtering, and settling filtrate for 14 days. The cluster compound is used in the fields of high density information storage, quantum computer and the like.

Description

technical field [0001] The invention relates to a cluster compound and a preparation method thereof. Background technique [0002] Single-molecule magnets can be viewed as the intersection of molecular-based ferromagnets and nanomagnetic materials. It provides the first truly monodisperse nanomagnets composed of a single molecule. Due to its very slow magnetic relaxation phenomenon at low temperature, it can be applied in the fields of high-density information storage and quantum computers. The study of single-molecule magnets also contributes to the understanding of the physics of nanoscale magnetic particles. [0003] Since Friedman et al. (J.Appl.Phys.1996, 79, 6031) reported the single-molecule magnet containing Mn12 atomic cluster complex for the first time in 1996, people began extensive research on single-molecule magnets containing transition metals. However, there are few reports on rare earth single-molecule materials. Compared with transition metals, the high s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/42C07F5/00
Inventor 孙文彬闫鹏飞田永梅李洪峰李光明
Owner HEILONGJIANG UNIV
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