Crystal structure of an inclusion complex between dibenzo-24-crown-8 and tropylium tetrafluoroborate
Abstract
The dibenzo-24-crown-8 encapsulates the non-disordered tropylium ion (C7H7+) with charge-transfer type π–π-interactions with average bond distances of 1.35 Å and C–C–C angles of 129° confirming a regular delocalised heptagon structure.