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Updated: Aug 17, 2026

Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
Two structural types of 1,3-alternate tetrapropoxycalix[4]arene derivatives in the solid state
Jan Sýkora1, Jan Budka, Pavel Lhoták
1Institute of Chemical Process Fundamentals, Rozvojova 135, 165 02 Prague 6, Czech Republic. sykora@icpf.cas.cz.
Abstract:
The solid state structures of seven tetrapropoxycalix[4]arene derivatives immobilised in a 1,3-alternate conformation were determined using single-crystal X-ray crystallography. The cavity shapes of investigated derivatives (upper rim unsubstituted, distally di-substituted and tetra-substituted) and the nature of intermolecular interactions in molecular packing were compared. The results indicate that there are only two structural types adopted by basic tetrapropoxycalix[4]arene derivatives in the 1,3-alternate conformation.
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