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An azobenzene 1,3-alternate calix[4]-bis-crown and its 1:1 complex with cesium

✍ Scribed by Mohamed Saadioui; Zouhair Asfari; Pierre Thuéry; Martine Nierlich; Jacques Vicens

Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
203 KB
Volume
38
Category
Article
ISSN
0040-4039

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✦ Synopsis

The preparation of azoealix[4]-bis-crown 1 combining one polyether crown-6 and one azobenzene modified crown-4 O-attached on each side of a calix[4]arene in the 1,3-alternate conformation is reported. The X-ray structures of t and of the 1:1 complex I.CsNO3 as solvates with nitromethane are also presented.

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Azo calix[4] crownsl-[2,2'] and 1-[4,4'] have been synthetized consisting in unsymmetrical 1,3-calix[4]-bis-crowns combining one polyether crown-6 and one azobenzene modified crown-6, Oattached at each side of a calix[4]arene in the 1,3-alternate conformation. Preliminary complexation of alkalis an