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Linear magnetic tetranuclear nickel complex as well as preparation method and application thereof

A nickel complex and magnetic technology, applied in nickel organic compounds, organic compound/hydride/coordination complex catalysts, organic chemical methods, etc., can solve the problems of high cost and low catalyst activity, and achieve high-efficiency reaction and coordination Low body consumption and energy saving effect

Active Publication Date: 2021-06-15
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a linear magnetic tetranuclear nickel complex and its preparation method and application. Through the preparation method with simple process and low cost input, a catalyst with high catalytic efficiency and stable Linear magnetic tetranuclear nickel complexes with excellent properties solve the problems of high cost and low catalyst activity

Method used

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  • Linear magnetic tetranuclear nickel complex as well as preparation method and application thereof
  • Linear magnetic tetranuclear nickel complex as well as preparation method and application thereof
  • Linear magnetic tetranuclear nickel complex as well as preparation method and application thereof

Examples

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Embodiment 1

[0047] 1.1 Linear magnetic tetranuclear nickel complex—[Ni 4 L2 (H 2 O) 3 CH 3 OH]·2CH 3 OH·2CH 3 CN·2H 2 Preparation of O.

[0048] Accurately weigh 0.05 mmol (13 mg) of ligand H with an analytical balance 2 L into a beaker, add 12mL of a mixed solution of methanol and acetonitrile (volume ratio 1:1), stir at room temperature 25°C for 10min, add 4mg of sodium hydroxide to deprotonate, add 0.05mmol (12mg) of nickel chloride hexahydrate and continue Stir for complexation reaction for 15 minutes to obtain a dark red solution, stand still, filter, put the filtrate in a glass bottle, and place it in a vacuum oven at 65°C for 36 hours to obtain a reddish-brown crystal-like nickel-based complex, which is The linear magnetic tetranuclear nickel complex has a crystal size of about 0.2mm×0.12mm×0.1mm.

[0049] In other specific embodiments, the nickel salt can also be nickel acetate (nickel acetate tetrahydrate), nickel nitrate (nickel nitrate hexahydrate), nickel sulfate (nick...

Embodiment 2

[0068] Linear magnetic tetranuclear nickel complex—[Ni 4 L 2 (H 2 O) 3 CH 3 OH]·2CH 3 OH·2CH 3 CN·2H 2 Preparation of O.

[0069] Accurately weigh 0.05 mmol (13 mg) of ligand H with an analytical balance 2 L into a beaker, add 14 mL of methanol and acetonitrile mixed solution (volume ratio 1:6), stir at 35°C for 10 min, add 13 μL of triethylamine for deprotonation, add 0.1 mmol (25 mg) of nickel acetate tetrahydrate and continue stirring After 10 minutes of complex reaction, a deep red solution was obtained, which was left to stand, filtered, and the filtrate was placed in a glass bottle, and left to stand in a vacuum oven at 60°C for 40 hours to obtain a reddish-brown crystal-like nickel-based complex, which is a linear The magnetic tetranuclear nickel complex has a crystal size of about 0.2mm×0.12mm×0.1mm.

Embodiment 3

[0071] Linear magnetic tetranuclear nickel complex—[Ni 4 L 2 (H2 O) 3 CH 3 OH]·2CH 3 OH·2CH 3 CN·2H 2 Preparation of O.

[0072] Accurately weigh 0.05 mmol (13 mg) of ligand H with an analytical balance 2 L into a beaker, add 16mL of a mixed solution of methanol and acetonitrile (volume ratio 1:3), stir at 15°C for 10min, add 5.6mg of potassium hydroxide for deprotonation, add 0.075mmol (20mg) of nickel sulfate hexahydrate and continue stirring The complexation reaction was carried out for 30 minutes to obtain a deep red solution, which was left to stand and filtered, and the filtrate was placed in a glass bottle and left to stand in a vacuum oven at 70°C for 30 hours to obtain a reddish-brown crystal-like nickel-based complex, which is the line Shaped magnetic tetranuclear nickel complex, the crystal size is basically about 0.2mm×0.12mm×0.1mm.

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Abstract

The invention discloses a linear magnetic tetranuclear nickel complex as well as a preparation method and application thereof, and belongs to the technical field of multifunctional new materials. The structural formula of the linear magnetic tetranuclear nickel complex is shown in the specification. According to the preparation method of the linear magnetic tetranuclear nickel complex, raw materials are easy to obtain, the preparation process is simple, and when the linear magnetic tetranuclear nickel complex is applied to catalysis of cyclic carbonate synthesis and methyl methacrylate polymerization, time consumption is low, reaction conditions are mild, and the yield is high. The linear magnetic tetranuclear nickel complex has a wide industrial application prospect, and has good catalytic activity and application value in catalyzing carbon dioxide to generate cyclic carbonate and catalyzing methyl methacrylate to polymerize.

Description

technical field [0001] The invention belongs to the technical field of multifunctional new materials, and relates to a linear magnetic tetranuclear nickel complex and its preparation method and application. Background technique [0002] CO 2 Not only is it considered to be the main greenhouse gas that causes global warming, but it also represents an inexhaustible, inexpensive, and non-toxic source of C1 that can be used as an alternative feedstock for fossil fuels. CO 2 Coupling reactions with epoxides to obtain cyclic carbonates are CO reduction 2 Environmentally friendly reactions that emit emissions and save energy are highly valued by industry and chemists. Especially under mild conditions, production costs and energy consumption can be reduced. Therefore, the catalysis of carbon dioxide to generate cyclocarbonate has become one of the research hotspots, and the synergy between metal centers in multinuclear complexes can be controlled to synthesize high-performance c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/04C08F120/14C08F4/70B01J31/22C07D317/36
CPCC07F15/045C08F120/14C08F4/7098B01J31/2243C07D317/36C08F2410/03B01J2531/847C07B2200/13Y02P20/584
Inventor 汪力武晋娣黄剑苏碧云赵赛迪王文珍代芳平
Owner XI'AN PETROLEUM UNIVERSITY
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