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Issue 59, 2014
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Synthesis and inclusion behavior of a heterotritopic receptor based on hexahomotrioxacalix[3]arene

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Abstract

A heterotritopic hexahomotrioxacalix[3]arene receptor with the capability of binding two alkali metals and a transition metal in a cooperative fashion was synthesized. The binding model was investigated by using 1H NMR titration experiments in CDCl3–CD3CN (10 : 1, v/v), and the results revealed that the transition metal was bound at the upper rim and the alkali metals at the lower and upper rims. Interestingly, the alkali metal ions Li+ and Na+ bind at the lower and upper rim respectively depending on the dimensions of the alkali metal ions versus the size of the cavities formed by the calix[3]arene derivative. The hexahomotrioxacalix[3]arene receptor acts as a heterotritopic receptor, binding with the transition metal ion Ag+ and the alkali metals ions Li+ and Na+. These findings were not applicable to other different sized alkali metals, such as K+ and Cs+.

Graphical abstract: Synthesis and inclusion behavior of a heterotritopic receptor based on hexahomotrioxacalix[3]arene

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Supplementary files

Article information


Submitted
15 May 2014
Accepted
03 Jul 2014
First published
04 Jul 2014

RSC Adv., 2014,4, 31469-31475
Article type
Paper
Author version available

Synthesis and inclusion behavior of a heterotritopic receptor based on hexahomotrioxacalix[3]arene

C. Jin, H. Cong, X. Ni, X. Zeng, C. Redshaw and T. Yamato, RSC Adv., 2014, 4, 31469
DOI: 10.1039/C4RA04566A

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