https://doi.org/10.1351/goldbook.C00804
Generic name for anions containing an even number of electrons and having an unshared pair of electrons on a tervalent carbon atom (e.g. Cl3C− or HC≡C− ) or — if the ion is mesomeric (see ![Not defined](/img/inline/C00804-1.png)
mesomerism
) — having at least one significant contributing structure
with an unshared pair of electrons on a tervalent carbon atom, for example: ![Not defined](/img/inline/C00804-1.png)
See also:
radical ion