Issue 28, 2015
From the journal:

CrystEngComm

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

Vincent J. Smith,a   Charl G. Marais,a   Kinga Suwińska,b   Janusz Lipkowski,b   Agnieszka Szumna,c   Catharine Esterhuysena  and  Leonard J. Barbour*a  

* Corresponding authors

a Department of Chemistry and Polymer Science, University of Stellenbosch, Matieland, South Africa
E-mail: ljb@sun.ac.za
Fax: +27 (0)21 808 3849
Tel: +27 (0)21 808 3335

b Cardinal Stefan Wyszynski University in Warsaw, Faculty of Mathematical and Natural Sciences, Wojcickiego 1/3, 01-938 Warszawa, Poland

c Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland

Abstract

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

DOI
https://doi.org/10.1039/C5CE00362H
Article type
Communication
Submitted
19 Feb 2015
Accepted
11 Mar 2015
First published
11 Mar 2015
This article is Open Access
Creative Commons BY license

CrystEngComm, 2015,17, 5129-5133

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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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