BECAUSE of the unusual geometry, bonding and reactivity of some lithiated molecules, they (poly lithiated hydrocarbons in particular) have attracted interest from organic, organometallic and theoretical chemists1-7. Calculations by Schleyer et al.3 have predicted that the hypervalent carbon-lithium molecules CLi5 and CLi6 should be stable with respect to dissociation to CLi4 and Li2. Here I report the observation of CLi6, which forms in the gas phase over solid Li2C2 and is identified by Knudsen-effusion mass spectrometry8. I confirm that the dissociation reaction above is significantly endothermic, indicating that carbon can expand its octet of electrons to form this relatively stable molecule. © 1992 Nature Publishing Group.
CITATION STYLE
Kudo, H. (1992). Observation of hypervalent CLi6 by Knudsen-effusion mass spectrometry. Nature, 355(6359), 432–434. https://doi.org/10.1038/355432a0
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