The delocalized
carbenium ion, cycloheptatrienylium,
C7H7+,
derived formally by
detachment of one
hydride ion from the
CH2 group of cyclohepta-1,3,5-triene and substitution derivatives thereof.
Source:
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1373