Issue 9, 2007

Nonregular structure–property relationships for inclusion parameters of tert-butylcalix[5]arene

Abstract

The effect of macrocycle size on the structure–property relationships was studied for inclusion compounds of tert-butylcalix[n]arenes (n = 4,5) with volatile organic guests having various molecular size and group composition. Vapor-sorption isotherms, guest-inclusion stoichiometry and Gibbs energy, thermostability parameters and decomposition enthalpies were determined for host–guest compounds (clathrates) obtained using saturation of solid calixarene powder with guest vapor. The increase of the host macrocycle in the studied calixarene pair changes the observed structure–property relationship from the guest-binding selectivity mostly seen in inclusion Gibbs energy to the high sensitivity for guest structure in inclusion stoichiometry. The host with the larger macrocycle has more clathrates with stepwise formation and decomposition. Specific types of guest binding with solid hosts are discussed.

Graphical abstract: Nonregular structure–property relationships for inclusion parameters of tert-butylcalix[5]arene

Supplementary files

Article information

Article type
Paper
Submitted
23 Jan 2007
Accepted
19 Mar 2007
First published
04 Apr 2007

Org. Biomol. Chem., 2007,5, 1472-1478

Nonregular structure–property relationships for inclusion parameters of tert-butylcalix[5]arene

M. A. Ziganshin, A. V. Yakimov, G. D. Safina, S. E. Solovieva, I. S. Antipin and V. V. Gorbatchuk, Org. Biomol. Chem., 2007, 5, 1472 DOI: 10.1039/B701082F

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