[lenumber1]

hello I have a question from my review of organic chemistry.
But I do not understand what it's encoding method.

the observed amount of heat evolved when Cyclooctatétraène is hydrogenated in 110 kcal/mol. what does this tell you about the possible resonance energy of this compound?

can you tell me the answer or give me a link to understand how to answer this question.

[AlphaScent]

Cyclooctatetraene, is it aromatic?

[lenumber1]

le cyclooctatétraène n'est pas aromatique, mais il n'est pas non plus anti-aromatique. Sa réactivité est caractéristique d'un polyène ordinaire, c'est-à-dire qu'il suit des réactions d'addition. En revanche, le benzène, aromatique, suit caractéristiquement des réactions de substitution, pas d'addition. voila la réponse de wikipedia. merci

[Dan]

Please post in English.

Do you understand the concepts covered by the text you pasted in from Wikipedia?

[lenumber1]

cyclooctatetraene is not aromatic, but is not non-aromatic. Its reactivity is a characteristic of ordinary polyene, that is to say it follows addition reactions. However, benzene, aromatic, characteristically following substitution reactions, no addition. here is the response from wikipedia. thank you

[clarkstill]

cyclooctatetraene is not aromatic, but is not non-aromatic.

hmmm....

Cyclooctatetraene has 8 pi electrons; does that satisfy the (4n+2) rule for aromaticity?  If not, it is antiaromatic and therefore not subject to the increased stability that aromatic compounds experience.