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Cadmium (II) coordination compound including 5-bromoniacin and preparation method thereof

A complex, nicotinic acid technology, applied in cadmium organic compounds, chemical instruments and methods, organic chemistry and other directions, can solve problems such as unmanned registration, and achieve the effects of simple and easy operation, high yield and good thermal stability

Inactive Publication Date: 2011-01-19
TIANJIN NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially 5-bromonicotinic acid and d 10 Complexes formed by transition metal ions have not been reported so far

Method used

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  • Cadmium (II) coordination compound including 5-bromoniacin and preparation method thereof
  • Cadmium (II) coordination compound including 5-bromoniacin and preparation method thereof
  • Cadmium (II) coordination compound including 5-bromoniacin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 The preparation process of the cadmium (II) complex containing 5-bromonicotinic acid is as follows:

[0030] 0.1mmol Cd(NO 3 ) 2 4H 2 O is placed at the bottom of the test tube and dissolved with 5 mL of distilled water; 15 mL of a mixture of methanol and water at a volume ratio of 1:1 is added in the middle; 0.05 mmol HL is dissolved with 5 mL of methanol and placed on the upper layer of the test tube; then sealed and left for 20 days, the solution on the wall of the test tube Colorless blocky single crystal P2 appears at the junction of the interface 1 / c, the crystal is washed with distilled water and ethanol in sequence, and dried in vacuum to obtain the target product with a yield of about 75%.

[0031] The main infrared absorption peaks of the target product are: 1601vs, 1554vs, 1428w, 1385vs, 1294m, 1234w, 1188w, 1128m, 1094m, 1027w, 909w, 879m, 783s, 738s, 690s, 618w, 569w, 463w; the elemental analysis results For: theoretical value: H, 1.18; C, 28...

Embodiment 2

[0032] Example 2 The preparation process of the cadmium (II) complex containing 5-bromonicotinic acid is as follows:

[0033] 0.1mmol CdSO 4 Put it at the bottom of the test tube and dissolve it with 5 mL of distilled water; add 16 mL of a mixture of methanol and water with a volume ratio of 1:1 in the middle; dissolve 0.05 mmol HL with 5 mL of methanol and place it on the upper layer of the test tube; A colorless blocky single crystal appeared at the junction of , and the crystal was washed with distilled water and ethanol in sequence, and dried in vacuum to obtain the target product with a yield of about 72%.

[0034] The main infrared absorption peaks of the target product are: 1601vs, 1554vs, 1428w, 1385vs, 1294m, 1234w, 1188w, 1128m, 1094m, 1027w, 909w, 879m, 783s, 738s, 690s, 618w, 569w, 463w; the elemental analysis results For: theoretical value: H, 1.18; C, 28.02; N 5.45%, experimental value: H, 1.10; C, 28.17; N, 5.51%.

Embodiment 3

[0035] Example 3 The preparation process of the cadmium (II) complex containing 5-bromonicotinic acid is as follows:

[0036] 0.12mmol Cd(ClO 4 ) 2 ·6H 2 O is placed at the bottom of the test tube and dissolved with 4 mL of distilled water; 20 mL of a mixture of methanol and water with a volume ratio of 1:1.3 is added in the middle; 0.05 mmol HL is dissolved with 4 mL of methanol and placed on the upper layer of the test tube; then sealed and left for 25 days, the solution on the wall of the test tube A colorless blocky single crystal appeared at the junction of the interface, and the crystal was washed with distilled water and ethanol in sequence, and dried in vacuum to obtain the target product with a yield of about 70%.

[0037]The main infrared absorption peaks of the target product are: 1601vs, 1554vs, 1428w, 1385vs, 1294m, 1234w, 1188w, 1128m, 1094m, 1027w, 909w, 879m, 783s, 738s, 690s, 618w, 569w, 463w; the elemental analysis results For: theoretical value: H, 1.18; ...

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Abstract

The invention relates to cadmium (II) coordination compound including 5-bromoniacin and a preparation method thereof. The chemical formula of the coordination compound is [Cd(L)2]infinite, wherein L is the deprotonated 5-bromoniacin anion ligand of carboxyl. The synthesis method of the coordination compound comprises the steps of: placing the cadmium (II) metal salt at the bottom layer of a glass test tube under the normal pressure and temperature, and adding distilled water for dissolution; adding the mixture of methanol and water thereupon as a buffer layer; adding a methanol solution of 5-bromoniacin ligand (HL) to the uppermost layer; and standing for a plurality of weeks to obtain the coordination compound of the invention. The coordination compound has good thermal stability, and the synthesis method thereof has the advantages of simple and convenient operation, high yield, good reproducibility, and the like. The invention is hopeful to be widely applied in the field of fluorescent crystal materials.

Description

technical field [0001] The present invention relates to d 10 In the field of metal complex fluorescent materials, it is a 5-bromonicotinic acid-cadmium (II) complex and a preparation method thereof. The complex has a double node (3,5)-linked (4.6 2 )(4.6 7 .8 2 ) topological network structure, which can be further developed and applied as fluorescent materials. Background technique [0002] Coordination polymers are a new class of molecular aggregates with advanced ordered structures. Especially in recent years, through the cross-fusion with supramolecular chemistry, a large number of new materials with novel network structures have been assembled. The fields of adsorption, ion exchange, gas storage and biological activity show potential application prospects. Nicotinic acid is a multidentate ligand with dual functional groups (pyridine and carboxyl), the carboxyl group can provide a variety of coordination modes during the assembly process, and the pyridine ring provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/08C07D213/80C07D213/803C09K11/06
Inventor 李程鹏杜淼方少明伍靖民刘春森户敏
Owner TIANJIN NORMAL UNIVERSITY
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