Destroyer orgo #27

[tgutberg]

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Hey
So i dont understand why b and d are not arromatic. b is basically benzene. That compound wont last a second and will transform into aromatic benzene. Same thing for d. Why dont they consider them aromatic?

 

[D.D.S.]

The solution has answers to your question... look at the sp3 carbons, electrons cannot delocalize, and therefore not aromatic. Each atom has to have an empty p orbital....