교과서 질문
Classify the following conjugated systems as having 4n or 4n + 2 π electrons.
(f)
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18. Aromaticity
Huckel's Rule
객관식
Is the following molecule aromatic?
A
Yes
B
No, there are not 4n + 2 π electrons.
C
No, it is not conjugated.
D
No; it is not cyclic.
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검증된 단계별 안내1
Identify the structure of the molecule: The image shows a bicyclic compound with one benzene ring and one cyclohexane ring.
Determine if the molecule is cyclic: The molecule is cyclic as it contains two rings.
Check for conjugation: The benzene ring is fully conjugated with alternating double and single bonds, but the cyclohexane ring is not conjugated as it contains only single bonds.
Apply Huckel's rule for aromaticity: Huckel's rule states that a molecule is aromatic if it is cyclic, planar, fully conjugated, and contains 4n + 2 π electrons, where n is a non-negative integer.
Count the π electrons: The benzene ring has 6 π electrons, which satisfies the 4n + 2 rule (n=1). However, the cyclohexane ring does not contribute to aromaticity as it lacks π electrons and conjugation.
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