The Syntheses of New Hosts-thiazoleazo Calixarenes Derivatives and Its Application in Recognition Analysis of Heavy Metal Ions

Abstract

Abstract: The synthesis of 5,11,17,23-tetrakis(2-thiazole)azo-25,26,27,28-tetrahydroxy calixarene(Ⅰ) and 5,11,17,23,29,35-hexa(2-thiazole)azo-37,38,39,40,41,42-hexahydroxy calixarene(Ⅱ) was described. The structures were confirmed by IR, ¹H NMR and elemental analysis. It was found that the synthesized derivatives have a good solubility in basic aqueous medium and posses molecular binding properties. It was showed that the derivatives exhibit a high selectivity for Ag⁺, Hg²⁺ and other ions compared with Na⁺, K⁺ and NH₄⁺, which is because metal ions such as Ag⁺ and Hg²⁺ display a great affinity for soft coordination center of nitrogen and sulfur atoms.

Key words: Thiazole, Calixarene derivatives, Synthesis, Metal ion, Recognition

CLC Number:

O614.1

TrendMD:

LÜ Jian-Quan, HE Xi-Wen. The Syntheses of New Hosts-thiazoleazo Calixarenes Derivatives and Its Application in Recognition Analysis of Heavy Metal Ions[J]. Chem. J. Chinese Universities, 2002, 23(2): 191.

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The Syntheses of New Hosts-thiazoleazo Calixarenes Derivatives and Its Application in Recognition Analysis of Heavy Metal Ions

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