“Cation‐π Interactions” Detected by Mass Spectrometry; Selective Recognition of Alkali Metal Cations by a π‐Basic Molecular Cavity

Fumiaki Inokuchi, Yuji Miyahara, Takahiko Inazu, Seiji Shinkai

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

A large, soft Cs+ ion nests in the cavity of [1.1.1]‐paracyclophane (1), giving rise to a stable [1 · Cs]+ complex (space‐filling model on the right), which can be detected in the gas phase by mass spectrometry. Crucial to the formation of this complex is the interaction of the Cs+ ion with all four arene rings. The somewhat smaller Rb+ ion also forms a stable complex with 1, but Li+, Na+, and K+ are too small to interact effectively with the cavity of 1. (Figure Presented.)

Original languageEnglish
Pages (from-to)1364-1366
Number of pages3
JournalAngewandte Chemie International Edition in English
Volume34
Issue number12
DOIs
Publication statusPublished - Jul 7 1995
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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