High-nuclear zinc cluster compound based on sulfur-containing triazole ligand and preparation method thereof

A technology of clusters and triazoles, which is applied in the field of complex synthesis, can solve the problems of difficulty in obtaining single crystals, low solubility of complexes, and easy precipitation, etc., and achieve the effect of improving solubility and wide application prospects

Inactive Publication Date: 2016-07-13

GUANGXI NORMAL UNIV

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AI-Extracted Technical Summary

Problems solved by technology

However, the solubility of complexes formed by sulfur-containing triazoles and transition metals is very small, and precipi...

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Abstract

The invention discloses a high-nuclear zinc cluster compound based on a sulfur-containing triazole ligand and a preparation method thereof. According to the molecular structural graph, the high-nuclear zinc cluster compound is the 3-thioketone-5-mercapto methyl-1,2,4-triazole 24-nuclear zinc cluster compound. In the preparation process, by the adoption of the method of adding the second kind of metal salt cadmium nitrate, the solubleness of the indissolvable sulfur-containing triazole cluster compound is improved; the zinc cluster compound has the potential application value in the aspects of modern medicine, optics, magnetics, and ion selective absorption and separation. The method has the wide application prospect in the aspect of preparation of indissolvable cluster compound monocrystals.

Application Domain

Organic chemistry methods

Technology Topic

IonSolubility +11

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Examples

Experimental program(1)
Effect test(1)

Example Embodiment

[0016] Example

[0017] Synthesis of high nuclear zinc cluster based on sulfur-containing triazole ligand:

[0018] Weigh 0.2mmol (0.0294g) H 3 L, 0.2mmol (0.0745g) Zn(ClO 4 ) 2 ·6H 2 O,0.2mmol(0.0617g)Cd(NO 3 ) 2 ·4H 2 O was mixed in 10 mL of DMF, the resulting mixture was stirred and reacted at room temperature for 6 hours, and then filtered to obtain a colorless solution. The filtrate was allowed to stand and volatilized slowly. After 25 days, colorless cubic crystals were separated from the mother liquor, which was separated, washed, and dried.

[0019] See figure 1 In the molecular structure diagram of the zinc cluster compound of the present invention, for the convenience of observation, the peripheral guest solvent molecules are deleted. It can be clearly observed from the figure that the zinc cluster compound of the present invention is a 24-core double-layer cyclic cluster compound composed of twenty-four zinc ions, twenty-four ligands and six coordinated water molecules. There is also a nitrate ion in the center. The ring center of the cluster unit is in the shape of an equilateral triangle, and there are two coordinated water molecules on each side. The cluster compound is composed of three asymmetric units, with a crystallographic triplet passing through the center of the structure.

[0020] See figure 2 The simplified structure diagram of the Zn framework in the zinc cluster compound of the present invention can be seen more intuitively from the figure that the metal framework is formed by a hexagonal combination of six zinc ions.

[0021] See image 3 The smallest asymmetric unit diagram of the zinc cluster compound of the present invention, as can be seen from the figure, each asymmetric unit contains eight zinc ions, eight ligand molecules and two coordinated water molecules. The bridges form a large metal ring structure. It can be seen from the figure that Zn1, Zn2, Zn3, and Zn5 present a five-coordination distortion tetragonal pyramid configuration, Zn4, Zn6 present a five-coordination triangular bipyramid geometry configuration, and Zn7, Zn8 present a four-coordination distortion tetrahedral configuration. Body configuration.

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Description & Claims & Application Information

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