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Doubly bridged tetrahomodioxacalix[4]arenes. Synthesis and complexation of quaternary ammonium ions.

โœ Scribed by Gianluca De Iasi; Bernardo Masci


Book ID
103408768
Publisher
Elsevier Science
Year
1993
Tongue
French
Weight
224 KB
Volume
34
Category
Article
ISSN
0040-4039

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A conformationally preorganized, C s -symmetrical p-tert-butyl-calix[6]-1,4-crown-4-2,6-dioxo-diazacrown-4 with hard and soft ion binding sites at the lower rim is synthesized. The binding sites may complex alkali metal ions or transition metal ions selectively.