Azulene () exhibits a significantly high dipole moment despite being a hydrocarbon. Which of the following best explains this behavior?

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Question

Azulene ($C_10H_8$) exhibits a significantly high dipole moment despite being a hydrocarbon. Which of the following best explains this behavior?

Prashant Kotian · Accepted Answer

Correct answer: C. Azulene polarizes to form two highly stable, 6-pi-electron aromatic rings: a 7-membered tropylium cation fused to a 5-membered cyclopentadienyl anion, resulting in a large dipole moment.

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