Structures of Solvent-Free,Monomeric LiCCH,NaCCH, and KCCH |
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Authors: | Douglas B Grotjahn Aldo J Apponi Matthew A Brewster Ju Xin Lucy M Ziurys |
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Abstract: | 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 rCM 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. |
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Keywords: | Alkali metals Alkynes Gas-phase chemistry Rotational spectroscopy |
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