Definition of aminiumyl radical ions

1. Radicals cations, R3N.+, derivable from aminium ions, R3NH+, by removal of a hydrogen atom. Aminiumyl radical ions are, except for H3N.+, synonymous with the ammoniumyl radical ions. As the term ammonium is well known, ammoniumyl radical ions is the more desirable class name. Cf. ammoniumyl radical ions. RNRI Rule RC-85-3.1.