A thiourea-functionalized benzo-15-crown-5 for cooperative binding of sodium ions and anions

Seiichi Nishizawa, Kazuki Shigemori, Norio Teramae

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

A new bifunctional receptor 1 for cooperative complexalion of cations and anions is synthesized on the basis of benzo-15-crown-5, functionalized with a thiourea moiety as anion binding sites. When Na+ is bound to the crown moiety of 1 , the association constants of I-, Br- and NO3 - in CD3CN are significantly increased, as compared with free 1 . Thermodynamic studies indicate that these large increases in complex stabilities can be ascribed primarily to the enthalpic effect.

Original languageEnglish
Pages (from-to)1185-1186
Number of pages2
JournalChemistry Letters
Issue number11
DOIs
Publication statusPublished - 1999 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)

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