ammoniumyl radical ions

https://doi.org/10.1351/goldbook.A00293
H3N.+ and its @H02891@ derivatives, e.g. (CH3)3N.+ trimethylammoniumyl, PhN.+H2 phenylammoniumyl or benzenaminiumyl.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1317 [Terms] [Paper]