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Conformational behaviour of tetramethoxythiacalix[4]arenes: solution versus solid-state study

✍ Scribed by Pavel Lhoták; Michal Himl; Ivan Stibor; Jan Sýkora; Hana Dvořáková; Jan Lang; Hana Petřı́čková

Book ID
104205704
Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
732 KB
Volume
59
Category
Article
ISSN
0040-4020

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✦ Synopsis

The conformational behaviour of simple thiacalix[4]arene derivatives was studied using a combination of NMR spectroscopy and X-ray diffraction analysis. The 25,26,27,28-tetramethoxythiacalix[4]arene was found to adopt an unprecedented solid-state structure, where the cone and 1,3-alternate conformers co-exist in the crystal lattice in the 3:1 ratio. This phenomenon reflects the basically distinct conformational behaviour of thiacalix[4]arene skeleton as compared with classical calixarenes.

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Synthesis and solid state structural ana
Synthesis and solid state structural analysis of conformers of tetrakis((ethoxycarbonyl)methoxy)tetrathiacalix[4]arene
✍ Huriye Akdas; Gilles Mislin; Ernest Graf; Mir Wais Hosseini; André De Cian; Jean 📂 Article 📅 1999 🏛 Elsevier Science 🌐 French ⚖ 299 KB

The role of alkaline metal cations in the synthesis and in determining the conformer distribution of tetrakis((ethoxycarbonyl)methoxy)tetrathiacalix[4]arene obtained by treatment of tetrathiacalix [4]arene 1 in acetone by ethyl bromoacetate in the presence of M2CO 3 was systematically investigated.