iminium compounds
Salts in which the cation has the structure R2C=N+R2. Thus N-hydronated imines and their N-substituted derivatives. The synonymous terms imonium compounds and immonium compounds are irregularly formed and should not be used.
See: quaternary ammonium compounds
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1343 (