Entropy-Dominating Strong Binding of Carboxylate Anions to Protonated Aminocyclodextrin

Entropy-Dominating Strong Binding of Carboxylate Anions to Protonated Aminocyclodextrin

Protonated heptakis(6-amino-6-deoxy)-β-cyclodextrin complexes with p-methylbenzoate and N-acetyltryptophan anions more strongly than a monoamino-β-cyclodextrin cation. Such a strong association is dominated by large and positive entropy changes for complexation which might be due to extensive dehydr...

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Veröffentlicht in:Chemistry letters 1997-09, Vol.26 (9), p.899-900
Hauptverfasser: Kano, Koji, Kitae, Takashi, Takashima, Hiroshi, Shimofuri, Yoshiaki
Format: Artikel
Sprache:eng
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Zusammenfassung:Protonated heptakis(6-amino-6-deoxy)-β-cyclodextrin complexes with p-methylbenzoate and N-acetyltryptophan anions more strongly than a monoamino-β-cyclodextrin cation. Such a strong association is dominated by large and positive entropy changes for complexation which might be due to extensive dehydration from both host and guest upon complexation.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.1997.899