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Unformatted text preview: electrons, and the orbitals of the nonbonding electron pairs, in the two heterocycles below. N . . N H . . pyridine pyrrole N sp 2 N H Six electrons satisfy the Huckel rule for an aromatic system. The two nonbonding electrons are orthogonal to the system in a sp 2 orbital. .. The two nonbonding electrons on nitrogen are part of the six electrons that comprise an aromatic system....
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- Organic chemistry