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Synthesis and cation complexation of calix[4]azacrowns and a spirobiscalix[4]azacrown

✍ Scribed by Abdelwaheb Hamdi; Mohamed Habib Noomen; Rym Abidi; A. Rim Woo; Jeong Hwan Cho; Yang Kim

Book ID
106389544
Publisher
Springer Netherlands
Year
2011
Tongue
English
Weight
408 KB
Volume
71
Category
Article
ISSN
0923-0750

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The synthesis and complexation properties of a novel type of calix[4]azacrown, in which two cone calix [4]arenes are linked via a spiro C-atom incorporated into polyaminoalkylene chains are presented.

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## Abstract A series of novel 1,3‐altemate calix[4]arene azacrowns having mono and bis crown ethers on the lower rim of the calix[4]arene framework were synthesized. Solid‐state structures confirmed the three dimensional conformation of compounds **1–3.**

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## Abstract Theoretical studies of 1,3‐alternate‐25,27‐bis(1‐methoxyethyl)calix[4]arene‐azacrown‐5 (**L~1~**), 1,3‐alternate‐25,27‐bis(1‐methoxyethyl)calix[4]arene‐__N__‐phenyl‐azacrown‐5 (**L~2~**), and the corresponding complexes M^+^/ **L** of **L~1~** and **L~2~** with the alkali‐metal cations: