Cyclopropenyl Cation. Synthesis and Characterization

Ronald Breslow, John Taylor Groves

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118 Scopus citations


Three salts of cyclopropenyl cation (I) have been prepared from 3-chlorocyclopropene. The nmr spectrum of the cation is consistent with expectations, and the infrared spectrum has only four bands which have been assigned to the four allowed modes for a molecule with D3h symmetry. The PKR+ of I was determined to be –7.4 ± 0.1 by an nmr method. Comparison with an estimated pKR+ for allyl cation shows that I is 18 kcal/mole more stabilized. This compares well with a gas-phase value of 17–18 kcal/mole determined from appearance potentials.

Original languageEnglish (US)
Pages (from-to)984-987
Number of pages4
JournalJournal of the American Chemical Society
Issue number4
StatePublished - Feb 1 1970

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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