aminium ions

https://doi.org/10.1351/goldbook.A00277
Cations HR3N+ formed by hydronation of an amine R3N . 'Non-quaternary ammonium ions' is a synonymous term, e.g. prolinium, PhN+HMe2 , N,N-dimethylanilinium.
See also:
onium compounds
Note:
If a class X can be hydronated to Xium ions the class Xium ions commonly includes the derivatives formed by the replacement of the added @H02904@ with a hydrocarbyl group. Aminium ions form an exception, made possible by the availability of the class name ammonium ions.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1316 [Terms] [Paper]