Aromaticity For each of the species below, identify any cyclic conjugated system

Question

Aromaticity

For each of the species below, identify any cyclic conjugated system, then A. Detemine the number of electrons in a system of cyclic conjugation (zero if no cyclic conjugation) B. Specify whether the species is "a"-aromatic, "aa"-anti aromatic, or na non-aromatic (neither aromatic nor anti aromatic) (Presume rings to be planar unless structure obviously prevents planarity. If there is more than one conjugated ring. count electrons in the largest.) S: H3C A Electrons in a cyclic conjugated system. B.The compound is (a, aa, or na A Electrons in a cyclic conjugated system. B.The compound is (a, aa, na 3 more group attempts remaining Submit Answer Retry Entire Group

Explanation / Answer

1) compound 1 is aromatic a

it having 6 pi electrons in ring system and cyclic conjugation.

2) anti aromatic. aa

it is cyclic conjugated system. but not following 4n+2 pi electron system. only 4pi electrons present in ring.

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