Coordination polymer with three-dimensional open framework structure and its preparation and application

A technology of coordination polymers and skeleton structures, applied in cadmium organic compounds, organic chemistry, chemical/physical processes, etc.

Inactive Publication Date: 2014-10-22
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently known coordination polymers with anion exchange properties often exhibit certain limitations (R. Custelcean, B.A. Moyer, Eur. J. Inorg. Chem. 2007, 1321–1340 )

Method used

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  • Coordination polymer with three-dimensional open framework structure and its preparation and application
  • Coordination polymer with three-dimensional open framework structure and its preparation and application
  • Coordination polymer with three-dimensional open framework structure and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Preparation and Discussion of Polypyridine Bridged Organic Ligand L Based on 1,2,4-Triazole

[0064] 1. Synthesis experiment and post-processing:

[0065] Dissolve N-(4-pyridyl)-2-pyridine-thioamide (21.5 g, 0.1 mol) and 2-pyridinecarbohydrazide (13.7 g, 0.1 mol) in 200 mL of n-butanol, and heat to reflux for 36 hours After that, the heating was stopped, cooled to room temperature, and filtered under reduced pressure. The obtained light yellow solid was washed three times with ethanol, and then recrystallized with ethanol to obtain a white powder product. Accurately weighed with an analytical balance, the calculated yield was 66%.

[0066] 2. Results and Discussion:

[0067] Analytical testing equipment:

[0068] Elemental analysis, C, H, N content determination using CE-440 (Leemanlabs) elemental analyzer

[0069] Infrared Spectroscopy, AVATAR-370 (Nicolet) Fourier Transform Infrared Spectrometer

[0070] Elemental Analysis: Theoretical Values ​​(C 17 h 12 N ...

Embodiment 2

[0073] Preparation and Discussion of Polypyridine Bridged Organic Ligand L Based on 1,2,4-Triazole

[0074] 1. Synthesis experiment and post-processing:

[0075] Dissolve N-(4-pyridyl)-2-pyridine-thioamide (21.5 g, 0.1 mol) and 2-pyridinecarbohydrazide (17.8 g, 0.13 mol) in 200 mL of n-butanol, and heat to reflux for 40 hours After that, the heating was stopped, cooled to room temperature, and filtered under reduced pressure. The obtained light yellow solid was washed three times with ethanol, and then recrystallized with ethanol to obtain a white powder product. Accurately weighed with an analytical balance, the calculated yield was 70%.

[0076] 2. Results and Discussion:

[0077] Analytical testing equipment:

[0078] Elemental analysis, C, H, N content determination using CE-440 (Leemanlabs) elemental analyzer

[0079] Infrared Spectroscopy, AVATAR-370 (Nicolet) Fourier Transform Infrared Spectrometer

[0080] Elemental Analysis: Theoretical Values ​​(C 17 h 12 N 6...

Embodiment 3

[0083] Preparation and Discussion of Polypyridine Bridged Organic Ligand L Based on 1,2,4-Triazole

[0084] 1. Synthesis experiment and post-processing:

[0085] Dissolve N-(4-pyridyl)-2-pyridine-thioamide (21.5 g, 0.1 mol) and 2-pyridinecarbohydrazide (20.5 g, 0.15 mol) in 200 mL of n-butanol, and heat to reflux for 38 hours After that, the heating was stopped, cooled to room temperature, and filtered under reduced pressure. The obtained light yellow solid was washed three times with ethanol, and then recrystallized with ethanol to obtain a white powder product. Accurately weighed with an analytical balance, the calculated yield was 73%.

[0086] 2. Results and Discussion:

[0087] Analytical testing equipment:

[0088] Elemental analysis, C, H, N content determination using CE-440 (Leemanlabs) elemental analyzer

[0089] Infrared Spectroscopy, AVATAR-370 (Nicolet) Fourier Transform Infrared Spectrometer

[0090] Elemental Analysis: Theoretical Values ​​(C 17 h 12 N ...

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Abstract

The invention relates to a coordination polymer with a three-dimensional open-framework structure as well as preparation and application thereof. The chemical formula of the coordination polymer is: [CdL2] (ClO4)2, wherein the L is 3, 5-bis (2-pyridyl)-4-(4-pyridyl)-1,2,4-triazole. The synthesis of the compound adopts a method of stirring at a normal temperature. The preparation comprises the steps of: mixing an aqueous solution of Cd (ClO4)2 with a methanol solution of the ligand L at the normal temperature and pressure, filtering the reaction solution after stirring, standing the filtrate, slowly volatilizing the solvent and obtaining colourless blocky monocrystal products after about one week. The preparation of the coordination polymer is simple in process, short in reaction time, easy in aftertreatment and higher in yield. The coordination polymer has the three-dimensional open-framework structure to ensure that perchlorate ion accommodated in the cavity can be selectively in anion exchange reaction with acetate ion. The coordination polymer has the advantages that the limitation of a conventional anion exchange material is overcome and the exchange process is simple and very easy to carry out and is expected to be used in practical applications in the field of ion exchange materials.

Description

technical field [0001] The invention belongs to the technical field of synthesis, structure and performance of novel inorganic-organic hybrid materials, in particular to the preparation of a Cd(II) coordination polymer with a three-dimensional open framework structure, more specifically 3,5- Preparation of bis(2-pyridyl)-4-(4-pyridyl)-1,2,4-triazole-cadmium(II)perchlorate and its application in selective ion exchange. Background technique [0002] In recent years, the research on coordination polymers has become one of the hotspots in the fields of chemistry and materials science (R.-Q. Zou, A. I. Abdel-Fattah, H.-W. Xu, Y.-S. Zhao, D. D. Hickmott, CrystEngComm 2010, 12 , 1337–1353; G. Férey, C. Serre, Chem. Soc. Rev. 2009, 38 , 1380). Many scientists at home and abroad have made a lot of significant achievements in the structural design and material properties of coordination polymers. At present, the research trend of coordination polymers is mainly reflected in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F3/08C07D401/14B01J41/08B01J41/13
Inventor 杜淼郭健李程鹏
Owner TIANJIN NORMAL UNIVERSITY
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