Issue 28, 2015

Concomitant polymorphs of p-iso-propylcalix[4]arene


Sublimation of p-iso-propylcalix[4]arene under reduced pressure results in the concomitant formation of two new polymorphs (forms IIP and IIIP). Both forms consist of interdigitated dimers of calixarene molecules, as does the known form IP. Despite similar inclusion behaviour to that of p-tert-butylcalix[4]arene, p-iso-propylcalix[4]arene does not appear to favour the formation of a transiently porous material.

Graphical abstract: Concomitant polymorphs of p-iso-propylcalix[4]arene

  • This article is part of the themed collection: Polymorphism

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Article information

Article type
19 Feb 2015
11 Mar 2015
First published
11 Mar 2015
This article is Open Access
Creative Commons BY license

CrystEngComm, 2015,17, 5129-5133

Author version available

Concomitant polymorphs of p-iso-propylcalix[4]arene

V. J. Smith, C. G. Marais, K. Suwińska, J. Lipkowski, A. Szumna, C. Esterhuysen and L. J. Barbour, CrystEngComm, 2015, 17, 5129 DOI: 10.1039/C5CE00362H

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