Compare the resonance energies of cyclohepta-1,3,5-triene (a) and 2-hydroxycyclohepta-2,4,6-trienone (b). Is the resonance energy of (a) greater than, less than or equal to that of (b) ?
(a)
(b)

Question

Compare the resonance energies of cyclohepta-1,3,5-triene (a) and 2-hydroxycyclohepta-2,4,6-trienone (b). Is the resonance energy of (a) greater than, less than or equal to that of (b) ? (a) (b)

TestHub · Accepted Answer

Tropolone can ionise to a hydroxy-tropylium-oxide form with a 6π aromatic ring, which is stabilised by an intramolecular H-bond. Cycloheptatriene has an s p 3 carbon. So a < b.

Chemistry - GOC Question with Solution | TestHub

Options:

Doubts & Discussion