Multi-core single-molecule magnet
阅读说明：本技术 一种多核单分子磁体 (Multi-core single-molecule magnet ) 是由 仝佳平 庄佳佳 邵锋 罗刚 陈明光 于 2019-11-16 设计创作，主要内容包括：本发明提供一种多核单分子磁体,所述单分子磁体为下述配合物或其溶剂合物：Co<Sub>5</Sub>Eu<Sub>4</Sub>(OCH<Sub>3</Sub>)<Sub>8</Sub>(OAc)<Sub>12</Sub>(NO<Sub>3</Sub>)<Sub>2</Sub>(CH<Sub>3</Sub>OH)<Sub>6</Sub>,其中Ac表示乙酰基。本发明提供的多核单子磁体可用于制备信息存储材料,尤其是磁存储材料。(The invention provides a multi-core monomolecular magnet, which is a complex or a solvate thereof as follows: co 5 Eu 4 (OCH 3 ) 8 (OAc) 12 (NO 3 ) 2 (CH 3 OH) 6 Wherein Ac represents an acetyl group. The multi-core single-element magnet provided by the invention can be used for preparing information storage materials, especially magnetic storage materials.)
1. A multi-core single molecule magnet, characterized in that: the monomolecular magnet is a complex or a solvate thereof as follows:
Co5Eu4(OCH3)8(OAc)12(NO3)2(CH3OH)6wherein Ac represents an acetyl group.
2. The multinuclear single molecule magnet according to claim 1, wherein: the monomolecular magnet is
[Co5Eu4(OCH3)8(OAc)12(NO3)2(CH3OH)6]·4CH3OH, wherein Ac represents acetyl.
3. The multinuclear single molecule magnet according to claim 1, wherein: the monomolecular magnet is
Co5Eu4(OCH3)8(OAc)12(NO3)2(CH3OH)6]·8H2O, wherein Ac represents acetyl.
4. The multinuclear single molecule magnet according to claim 1, wherein: the structure of the single-molecule magnet is shown in figure 1.
5. A method for producing the multinuclear single-molecule magnet according to claim 2, characterized in that: mixing of Co (OAc)2·4H2O and Eu (NO)3)3·6H2Dissolving O in methanol, and reacting the obtained mauve solution at 75-95 ℃ for 1-10 days to obtain orange hexagonal flaky crystals; wherein Ac represents acetyl, Co (OAc)2·4H2O and Eu (NO)3)3·6H2The molar ratio of O is 2-1: 1.
6. The method for producing a multinuclear single-molecule magnet according to claim 5, characterized in that: the molar ratio of the Co (OAc) 2.4H 2O to Eu (NO3) 3.6H 2O is 1.5: 1.
7. The method for producing a multinuclear single-molecule magnet according to claim 5 or 6, characterized in that: the reaction time was 7 days.
8. A method for preparing the multi-nuclear single-molecule magnet as claimed in any one of claims 5 to 7, which is characterized in that the multi-nuclear single-molecule magnet Co as claimed in claim 3 is used5Eu4(OCH3)8(OAc)12(NO3)2(CH3OH)6]·4CH3And placing OH in air, and stabilizing to obtain the product.
9. Use of the multinuclear single-seed magnet according to any one of claims 1 to 4 for the production of an information storage material.
10. The use of claim 9, wherein: the information storage material is a magnetic storage material.
Technical Field
The invention relates to a multi-core single-molecule magnet.
Background
A monomolecular magnet is a special organometallic compound. At a certain low temperature, it can be switched between two states of "0" (such as the direction of molecular orientation paramagnetic field) and "1" (the direction of molecular orientation counter magnetic field) like a tiny magnet, and can be used to store information. Compared to conventional magnets, single molecule magnets are significantly smaller, which means that storage devices made with such magnets have greater data storage capabilities.
Disclosure of Invention
The invention provides a multi-core monomolecular magnet, which is a complex or a solvate thereof as follows:
Co5Eu4(OCH3)8(OAc)12(NO3)2(CH3OH)6wherein Ac represents an acetyl group.
Further, the monomolecular magnet is [ Co ]5Eu4(OCH3)8(OAc)12(NO3)2(CH3OH)6]·4CH3OH, wherein Ac represents acetyl.
Further, the monomolecular magnet is Co5Eu4(OCH3)8(OAc)12(NO3)2(CH3OH)6]·8H2O, wherein Ac represents acetyl.
Further, the structure of the monomolecular magnet is shown in fig. 1.
The invention also provides the multi-core single-molecule magnet Co5Eu4(OCH3)8(OAc)12(NO3)2(CH3OH)6]·8H2O preparation method, namely preparing multi-core monomolecular magnet Co5Eu4(OCH3)8(OAc)12(NO3)2(CH3OH)6]·4CH3And placing OH in air, and stabilizing to obtain the product.
Preferably, the aforementioned Co (OAc)2·4H2O and Eu (NO)3)3·6H2The molar ratio of O is 1.5: 1.
Preferably, the time period of the aforementioned reaction is 7 days.
The invention also provides application of the multi-core single-photon magnet in preparation of an information storage material.
Further, the information storage material is a magnetic storage material.
The invention provides a monomolecular magnet with a brand-new structure, which can be used for preparing data storage materials, in particular magnetic storage materials.
Drawings
FIG. 1 is [ Co ]5Eu4(OMe)8(OAc)12(NO3)2(MeOH)6]Results of X-ray single-crystal structural analysis of 4MeOH
FIG. 2 to FIG. 5 show [ Co ]5Eu4(OMe)8(OAc)12(NO3)2(MeOH)6]·8H2And detecting the performance of the monomolecular magnet of O.
FIG. 2 shows that the susceptibility of the complex measured at 2-300K changes to 21.96cm at room temperature3K mol-1With decreasing temperature, χMThe value of T decreases slowly and starts to decrease rapidly after 150K and reaches a minimum value (16.14 cm) around 25K3K mol-1) And then rises rapidly.
Fig. 3 shows MH on the left and zero field splitting on the right.
Fig. 4 and 5 illustrate the properties of a single molecule magnet.
Detailed Description
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