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Dinuclear nickel coordination compound and preparation method and application thereof

A coordination compound and coordination technology are applied in the fields of binuclear nickel coordination compounds and their preparation, and binuclear metal coordination compounds and their preparation fields, which can solve the problems of difficult large-scale industrial production, harsh synthesis conditions, high prices and the like, Achieve the effect of high yield, simple preparation and stable structure

Active Publication Date: 2019-05-03
YUNNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high price and harsh synthesis conditions of these compounds, it is not easy to achieve large-scale industrial production
However, there are few reports on the use of cheap metal nickel to prepare photocatalysts for the reduction of carbon dioxide, especially the use of such cheap metal compounds for the conversion of carbon dioxide into methane is extremely rare

Method used

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  • Dinuclear nickel coordination compound and preparation method and application thereof
  • Dinuclear nickel coordination compound and preparation method and application thereof
  • Dinuclear nickel coordination compound and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 36.65 mg (0.2 mmol) of 4,4'-dimethyl-2,2'-bipyridine and 131.24 mg (0.2 mmol) of triphenylphosphine nickel dichloride into 50 mL of acetonitrile and mix well; Argon gas was introduced into the solution, and after stirring and reacting at 50° C. for 20 hours, a green precipitate was obtained; the above precipitate was dissolved with a mixed solution of acetonitrile and ethanol, wherein the volume of acetonitrile was 50%. After slowly volatilizing for 2 weeks, a green single crystal sample was obtained.

Embodiment 2

[0034] Add 36.65 mg (0.2 mmol) of 4,4'-dimethyl-2,2'-bipyridine and 65.62 mg (0.1 mmol) of triphenylphosphine nickel dichloride into 40 mL of acetonitrile and mix well; Argon was introduced into the solution, and after stirring and reacting at 60° C. for 15 hours, a green precipitate was obtained; the above precipitate was dissolved with a mixed solution of acetonitrile and ethanol, wherein the volume of acetonitrile was 50%. After slowly volatilizing for 2 weeks, a green single crystal sample was obtained.

Embodiment 3

[0036] Add 36.65 mg (0.2 mmol) of 4,4'-dimethyl-2,2'-bipyridine and 98.28 mg (0.15 mmol) of triphenylphosphine nickel dichloride into 60 mL of acetonitrile and mix well; Argon gas was introduced into the liquid, and after stirring and reacting at 70° C. for 15 hours, a green precipitate was obtained; the above precipitate was dissolved with a mixed solution of acetonitrile and ethanol, wherein the volume of acetonitrile was 60%. After slowly volatilizing for 2 weeks, a green single crystal sample was obtained.

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Abstract

The invention discloses a dinuclear nickel coordination compound and a preparation method and an application thereof. The coordination compound is [(dmbpy)2Ni2Cl4(H2O)2] and has molecular structure ofC24H28Cl4N4Ni2O2; wherein the dmbpy is 4,4'-dimethyl-2,2'-bipyridine and Ni is a bivalent nickel ion. The compound is in the form of solid crystal. The crystal of the coordination compound belongs totriclinic system and has P-1 space groups. The dinuclear molecular structure is formed with the 4,4'-dimethyl-2,2'-bipyridine and the nickel ion through a chlorine bridge bond. The preparation methodincludes: performing a reaction on nickel triphenylphosphine dichloride [NiCl2(PPh3)2] and the 4,4'-dimethyl-2,2'-bipyridine in an acetonitrile solution to obtain a green precipitate, dissolving theprecipitate in an acetonitrile / ethanol mixed solution for slowly volatilizing the liquid to obtain a green crystal. The product can be used as a photocatalyst in order to convert a greenhouse gas, CO2, into CH4 and CO having high additional value. The preparation method is easy to carry out and is high in product purity and yield. The coordination compound has excellent application prospect in thefield of photocatalytic conversion of CO2.

Description

technical field [0001] The invention relates to the technical field of coordination compound materials, in particular to a binuclear metal coordination compound and its preparation method and application, more specifically, to a binuclear nickel coordination compound and its preparation method and application. Background technique [0002] At present, most of the energy used by humans comes from fossil fuels, such as oil and coal. The combustion of fossil fuels releases large amounts of CO 2 , has brought serious challenges to global environmental issues. will CO 2 Reverting to the concept of chemical fuels with high added value is one of the effective ways to solve this problem. To achieve this, visible light can be used to catalytically reduce CO 2 , to obtain new fuels such as CO and methane. Searching for efficient photocatalysts is the key to solving CO 2 The key to recovery. Traditional photocatalysts generally use noble metal compounds, such as Ru, Ir, Pt, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/04B01J31/22C07C1/04C07C9/04
Inventor 徐全清聂小春刘然刘丰祎寇军锋
Owner YUNNAN NORMAL UNIV
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