Solventhermal synthesis method for L-tartaric acid rare earth complexes

A rare earth complex, tartaric acid technology, applied in the preparation of organic compounds, chemical instruments and methods, carboxylate preparation and other directions, can solve the problem that the rare earth complex of tartrate has not been reported in the literature, etc., and achieves convenient operation, concise process flow, The effect of good thermal stability

Inactive Publication Date: 2010-12-22
ZHEJIANG NORMAL UNIVERSITY
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Some synthetic methods of tartrate rare earth complexes have been reported in the literature at pre...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solventhermal synthesis method for L-tartaric acid rare earth complexes
  • Solventhermal synthesis method for L-tartaric acid rare earth complexes
  • Solventhermal synthesis method for L-tartaric acid rare earth complexes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Put 0.3g of cerium oxide and 0.3g of L-tartaric acid into a 20ml reaction kettle, add 2ml of ethanol, and mix evenly with 16ml of water.

[0039] Crystallize at a constant temperature of 140°C for 3 days and then cool to room temperature at a rate of 5°C per hour to obtain millimeter-sized cerium L-tartrate crystals. The molecular formula of the synthesized product L-cerium tartrate is: [Ce 2 (L-TAR) 3 (H 2 O) 4 ]·H 2 O, the space group is P2(1)2(1)2(1), and the unit cell parameter is a=7.9273(3) b=15.5871(6) c=17.5573(6) α=β=γ=90°, V=2169.44(14) Z=4, Dc=2.494g / cm 3 , which has a structure like figure 1 , figure 2 As shown, under the excitation of excitation light with a wavelength of 250nm, fluorescence with a wavelength of 355nm is emitted.

Embodiment 2

[0041] Put 0.3g of dysprosium oxide and 0.3g of L-tartaric acid into a 20ml reaction kettle, add 2ml of ethanol and 16ml of water and mix evenly. Crystallize at a constant temperature of 140°C for 3 days and then cool to room temperature at a rate of 5°C per hour to obtain millimeter-sized L-dysprosium tartrate complex crystals. The molecular formula of the synthesized product L-dysprosium tartrate is: [Dy 2 (L-TAR) 3 (H 2 O) 2 ]·3H 2 O, the space group is P1, and the unit cell parameter is a=5.9841(2) b=7.3983(2) c=13.2347(5) α=102.7500(10)°, β=101.669(2)°, γ=90.682(2)°, V=558.69(3) Z=1, Dc=2.554g / cm 3 , which has a structure like image 3 , Figure 4 As shown, under the excitation of the excitation light with the wavelength of 265nm, the fluorescence with the wavelength of 480nm can be emitted.

Embodiment 3

[0043] Put 0.3g of europium oxide and 0.3g of L-tartaric acid into a 20ml reaction kettle, add 2ml of ethanol and 16ml of water and mix evenly. Crystallize at a constant temperature of 140°C for 3 days and then cool down to room temperature at a rate of 5°C per hour to obtain millimeter-sized europium-tartrate complex crystals. In the method for solvothermally synthesizing chiral microporous fluorescent material L-europium tartrate of the present invention, L-europium tartrate, it is characterized in that, the molecular formula of the product L-europium tartrate synthesized is: [Eu 2 (L-TAR) 3 (H 2 O) 2 ]·3H 2 O, the space group is P1, and the unit cell parameter is a=6.0211(1) b=7.4575(1) c=13.2224(2) α=102.666(1)°, β=101.384(1)°, γ=90.894(1)°, V=566.795(15) Z=1, Dc=2.456g / cm3 , which has a structure like Figure 5 , Figure 6 As shown, under the excitation of the excitation light with the wavelength of 260mm, the fluorescence with the wavelength of 560nm can be ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a solventhermal synthesis method for L-tartaric acid rare earth complexes, which belongs to the field of synthesis of chiral compounds. The method has the advantages of controlling the particle sizes and shapes of products by changing the proportion of raw materials, crystallization temperature and temperature reduction rates, along with simple process flow and convenient operation. The synthesized L-tartaric acid rare earth complexes have high thermal stability, keep stable under alkaline condition and can be used for photoactivation materials or chiral resolving agents.

Description

technical field [0001] The invention relates to a synthesis method of a chiral material L-tartrate rare earth complex. It belongs to the field of synthesis of chiral compounds. Background technique [0002] Organometallic complexes have abundant and tunable crystal structures, and the synthesis and study of organometallic complexes is an active field. Tartaric acid, also known as 2,3-dihydroxysuccinic acid, is a simple and common α-hydroxy diacid, widely used in chemical and food industries; it has two mutually symmetrical chiral carbon , has three optical isomers, namely: D-tartaric acid (L-tartaric acid), L-tartaric acid (L-tartaric acid), meso-tartaric acid (meso-tartaric acid). Tartaric acid and its derivatives are not only commonly used chiral synthesis raw materials and chiral resolution agents, but also added to food as antioxidants. Some tartrates have important physical properties such as piezoelectricity and ferroelectricity and can be used in the electronics in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07C59/255C07C51/347
Inventor 吕耀康王晓娟陈静苏虹冯云龙
Owner ZHEJIANG NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products