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Cobalt complexes constructed based on 8-methoxyquinoline as well as preparation methods of two complexes and application of one complex

A technology of methoxyquinoline and cobalt complexes, which is applied to cobalt organic compounds, compounds containing elements of group 8/9/10/18 of the periodic table, organic chemical methods, etc., achieving good repeatability and simple synthesis methods easy to control effect

Active Publication Date: 2020-02-07
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, relevant examples of structural differences induced by solvents are extremely rare

Method used

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  • Cobalt complexes constructed based on 8-methoxyquinoline as well as preparation methods of two complexes and application of one complex
  • Cobalt complexes constructed based on 8-methoxyquinoline as well as preparation methods of two complexes and application of one complex
  • Cobalt complexes constructed based on 8-methoxyquinoline as well as preparation methods of two complexes and application of one complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1.1 Reagents used in the experiment

[0025] All reagents used in this experiment were of AR grade and were used directly without further purification. The reagents used are 8-methoxyquinoline (analytical pure), acetonitrile (analytical pure), anhydrous methanol (analytical pure), sodium thiocyanate (analytical pure).

[0026] 1.2 Test equipment

[0027] Elemental analysis for C, H and N was performed on a Vario Micro Cube. Thermogravimetric analysis (TGA) was performed using a NETZSCH TG 209F3 at a heating rate of 10°C / min in a nitrogen flow. By using PE Spectrum FT-IR spectrometer (400-4000cm -1 ) to test the infrared spectrum of the complex containing 0.5% of KBr particles. Magnetic susceptibility measurements were performed over the temperature range 2-300K using a QuantumDesign MPMS SQUID-XL-5 magnetometer equipped with a 5T magnet; the diamagnetic correction of these complexes was estimated using Pascal's constant and corrected for the diamagnetic contribution...

Embodiment 2

[0067] The preparation method of the complex Co1 in Example 1 was repeated, except that the reaction temperature was changed to 50°C. As a result, purple crystals were obtained. Yield 58% (based on Co(OAc) 2 4H 2 O). The obtained product was analyzed by single crystal diffraction, and the obtained purple crystal was determined to be the target product complex Co1.

[0068] The preparation method of the complex Co2 in Example 1 was repeated, except that the reaction temperature was changed to 50°C. As a result, red crystals were obtained. Yield 45% (based on Co(OAc) 2 4H 2 O). The obtained product was analyzed by single crystal diffraction, and the obtained red crystal was determined to be the target product complex Co2.

Embodiment 3

[0070] The preparation method of complex Co1 in Example 1 was repeated, except that potassium thiocyanate was used instead of sodium thiocyanate, and the reaction temperature was changed to 80°C. As a result, purple crystals were obtained. Yield 53% (based on Co(OAc) 2 4H 2 O). The obtained product was analyzed by single crystal diffraction, and the obtained purple crystal was determined to be the target product complex Co1.

[0071] The preparation method of the complex Co2 in Example 1 was repeated, except that sodium thiocyanate was replaced with potassium thiocyanate, and the reaction temperature was changed to 80°C. As a result, red crystals were obtained. Yield 41% (based on Co(OAc) 2 4H 2 O). The obtained product was analyzed by single crystal diffraction, and the obtained red crystal was determined to be the target product complex Co2.

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Abstract

The invention discloses two cobalt complexes constructed based on 8-methoxyquinoline as well as preparation methods of the two complexes and an application of one complex. The two complexes are respectively a complex Co1 and a complex Co2, a chemical formula of the complex Co1 is [Co(L)2(SCN)2], and a chemical formula of the complex Co2 is [Co2(L)2(SCN)(OAc)3], wherein L represents the 8-methoxyquinoline. According to the methods, the two cobalt complexes based on the 8-methoxyquinoline, namely the complex Co1 and the complex Co2, are constructed by simply changing a solvent, and the syntheticmethods are simple, easy to control, and repeatable; and in experiments, applicants find that the complex Co1 exhibits field-induced single ion magnet behavior and can be used to prepare a magnetic material.

Description

technical field [0001] The invention relates to a cobalt complex based on 8-methoxyquinoline and its preparation method and application, belonging to the technical field of magnetic materials. Background technique [0002] At present, the main methods for regulating the structure and function of complexes are: (1) Metal ions with specific functions participate in the construction of complexes. For example, a single-electron carrier (metal ion or free radical) is a prerequisite for the synthesis of magnetic complexes. (2) Ligand design. Organic ligands also play a vital role in the construction of complexes, and the coordination ability, coordination mode, flexibility / rigidity, and geometry of ligands are the main considerations in design. (3) Changes in bridging and terminal ligands. (4) Changes in external conditions such as reaction time, temperature, pH, etc. induce structural and functional changes. However, relevant examples of structural differences induced by solv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/06H01F1/42
CPCC07B2200/13C07F15/065H01F1/42
Inventor 邹华红汪海玲梁福沛
Owner GUANGXI NORMAL UNIV