carbene radical cations

https://doi.org/10.1351/goldbook.C00810
Species R2C·+ having one non-bonding electron, formally derived by subtraction of an electron from a @[email protected], e.g. H2C·+ methyliumyl.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1324 [Terms] [Paper]