imidonium ions [obsolete]

https://doi.org/10.1351/goldbook.I02952
A term, which is not recommended, for @N04146@.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1343 [Terms] [Paper]