Concept explainers
Interpretation:
Whether azulene, an isomer of naphthalene, is
Concept introduction:
According to Huckel’s rule a planar, cyclic conjugated system will be aromatic if it contains (4n+2)Ï€ electrons. Systems with 4nÏ€ electrons will be antiaromatic.
Resonance structures differ only in the position of lone pair or its π electrons. The position of atoms in different resonance forms do not differ. They do not represent the actual structure of the molecule. The actual structure is a hybrid of all the resonance forms possible.
To state:
Whether azulene, an isomer of naphthalene, is aromatic.
To draw:
Another resonance form of azulene in addition to that shown.
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Chapter 15 Solutions
Organic Chemistry
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- Label the following as aromatic, antiaromatic, or nonaromatic.arrow_forwardWhich compound is not aromatic? A. only A and D B. A, B and C C. only B D. only Aarrow_forwardResveratrol is an antioxidant found in the skin of red grapes. Its anticancer, anti-inammatory, and various cardiovascular effects are under active investigation. (a) Draw all resonance structures for the radical that results from homolysis of the OH bond shown in red. (b) Explain why homolysis of this OH bond is preferred to homolysis of either OH bond in the other benzene ring.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning