Structures of solvent-free, monomeric liCCH, naCCH, and KCCH

Douglas B. Grotjahn, Aldo J. Apponi, Matthew A. Brewster, Ju Xin, Lucy M. Ziurys

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The simplest alkali metal acetylides MCCH were made in the gas phase for the first time (see drawing), and their bond lengths were determined by millimeter/submillimeter spectroscopy of their isotopomers. The M-C bond lengths r(CM) are the shortest known for organoalkali metal compounds. In the case of LiCCH, the experimentally determined Li-C distance of 1.888 Å has an estimated accuracy of ±0.0005 Å, which should allow a rigorous test of theoretical methods.

Original languageEnglish (US)
Pages (from-to)2678-2681
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number19
StatePublished - Oct 16 1998


  • Alkali metals
  • Alkynes
  • Gas-phase chemistry
  • Rotational spectroscopy

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry


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