formed by hydronation of an amine R3N
. 'Non-quaternary ammonium ions' is a synonymous term, e.g. prolinium, PhN+HMe2
See also: onium compounds
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.
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1316 (https://doi.org/10.1351/pac199567081307)