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Aromaticity

Q. Why is cyclobutadiene dianion aromatic. Aren't the two carbon anions sp^3 hyberdized thus don't have a conjugated-p orbital making the molecule non-aromatic?

Solved • Jun 7, 2019

Aromaticity

Q. MAXALT (R) is a drug used to treat migraines. For each of the rings in the structure, indicate whether they are aromatic or not. For each of the nitrogen atoms in the rings, is the lone pair contributing to the pi system or not? Briefly explain your choices.

Solved • May 16, 2019