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Nitroxyl free radical metal complex with naphthalene ring structure and preparation method of complex

A technology of nitroxide free radicals and metal complexes, applied in the direction of cobalt organic compounds, organic materials/organic magnetic materials, etc., can solve problems that have not been widely concerned by scientists, and achieve simple crystal growth conditions and synthesis temperature The effect of low cost and simple process

Inactive Publication Date: 2014-12-03
NANKAI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] In the 1970s, Ullman first reported organic molecules of nitroxide radicals, but they did not receive widespread attention from scientists.

Method used

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  • Nitroxyl free radical metal complex with naphthalene ring structure and preparation method of complex
  • Nitroxyl free radical metal complex with naphthalene ring structure and preparation method of complex
  • Nitroxyl free radical metal complex with naphthalene ring structure and preparation method of complex

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Embodiment

[0020] A kind of nitroxide radical metal complex of naphthalene ring structure, its chemical formula is: {Co(hfac) 2 (NIT-2-OMe-naph)} n , where hfac is hexafluoroacetylacetone, NIT-2-OMe-naph is 2-(2-methoxy-1-naphthyl)-4,4,5,5-tetramethylimidazoline-3-oxide- 1-oxygen free radical, its preparation method step is as follows:

[0021] 1) Synthesis of NIT-2-OMe-naph

[0022] Add 20 mL of anhydrous methanol to 4 mmol 2,3-dimethyl-2,3-dihydroxyaminobutane, stir the mixture for 20 minutes, then add 4 mmol 2-methoxynaphthaldehyde under stirring, room temperature Stirring and reacting for 1 day, a large amount of light yellow precipitates precipitated in the solution, and a light yellow powder was obtained after suction filtration; the powder was dissolved in 100 mL of chloroform and stirred in an ice bath for 10 minutes, then 1 g of sodium periodate was added and dissolved in Sodium periodate solution prepared in 50 mL of water was reacted at 0°C for 15 minutes, the purple organi...

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Abstract

The invention discloses a nitroxyl free radical metal complex with a naphthalene ring structure. A chemical formula of the nitroxyl free radical metal complex is as follows: {Co(hfac)2(NIT-2-OMe-Naph)}n, wherein hfac is hexafluoro-acetylacetone, and NIT-2-OMe-Naph is a 2-(2-methoxy-1-naphthyl)-4,4,5,5-tetramethyl imidazoline-3-oxy-1-oxy free radical; a crystal is a cubic crystal system and a space group is P212121. The nitroxyl free radical metal complex has the advantages that the metal complex is a novel nitroxyl free radical ligand with greater electron density and steric hindrance; after the nitroxyl free radical containing a benzene ring is widely reported, the nitroxyl free radical with the benzene ring structure is expected to become a new concerned nitroxyl free radical main body, so that great possibility is provided for synthesizing various nitroxyl free radicals. A preparation method for the metal complex is simple in process, low in synthesis temperature, simple in crystal growth condition and high in synthesis yield which can be over 80%.

Description

technical field [0001] The invention relates to a metal complex of nitrogen-oxygen free radicals and a preparation technology, in particular to a metal complex of nitrogen-oxygen free radicals with a naphthalene ring structure and a preparation method thereof. Background technique [0002] In the 1970s, Ullman reported the nitroxide free radical organic molecule for the first time, but it did not receive widespread attention from scientists. Until the past ten years, with the rapid development of molecular nanomaterials, scientists focused on the organic small molecule ligands of nitroxide radicals with unpaired electrons. As a pure organic small molecule ligand, nitroxide radicals have a spin center themselves, which may become the basis of magnetic materials; they can also form complexes with metal ions that have one or more spin centers, making their own The distance between the spinophores is shortened, and the magnetic interaction is more significant, resulting in a ma...

Claims

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Application Information

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IPC IPC(8): C07F15/06H01F1/42
Inventor 程鹏张媛刘晓庆师唯
Owner NANKAI UNIV
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