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Chiral Spaces: Dissymmetric Capsules Through Self-Assembly

✍ Scribed by Rivera, J. M.

Book ID
121159035
Publisher
American Association for the Advancement of Science
Year
1998
Tongue
English
Weight
318 KB
Volume
279
Category
Article
ISSN
0036-8075

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A number of calix [6]arenes bearing ureas at the upper rim positions of alternate rings 1, 3 and 5 were prepared and studied in detail by NMR spectroscopy and gel permeation chromatography. N-Unsubstituted ureas were shown to dimerize through a cyclic array of hydrogen bonds to give cylindrical cavi