Complexation properties and characterization of four conformers of a []metacyclophane

Tsuyoshi Sawada, Akihiko Tsuge, Thies Thiemann, Shuntaro Mataka, Masashi Tashiro

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Cone, partial cone, 1,2-alternate, and 1,4-alternate conformers of tetrakis[(ethoxycarbonyl)-methoxy] []metacyclophane (MCP, 2) were isolated and characterized by1H-NMR and an X-ray crystal structure analysis of the 1,4-alternate conformer. Of the four conformers, only the cone conformer 2d forms a complex with alkali metals. The stability constants of 2d with alkali metal ions were determined by the direct1H-NMR method and UV spectra, and the order observed as potassium ≪cesium, sodium ions.

Original languageEnglish
Pages (from-to)301-313
Number of pages13
JournalJournal of Inclusion Phenomena and Molecular Recognition in Chemistry
Issue number1-4
Publication statusPublished - Mar 1994
Externally publishedYes


  • Metacyclophane
  • calixarenes
  • conformational isomers
  • ion-selectivity

ASJC Scopus subject areas

  • Food Science
  • General Chemistry
  • Condensed Matter Physics


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