Which of the following is not one of Hückel's criteria for aromaticity?
A) The compound must be cyclic
B) The compound must have one p-orbital on each atom of a ring
C) The compound must be planar or nearly planar so that there is a continuous overlap of p orbitals
D) The compound must have a closed loop of six pi electrons

Question

Quizplus · Accepted Answer

Hückel's criteria for aromaticity include that the compound must be cyclic, must have one p-orbital on each atom of the ring, and must be planar or nearly planar to allow continuous overlap of p orbitals. However, the requirement is not for a closed loop of six pi electrons specifically, but for a closed loop of 4n+2 pi electrons, where n is a non-negative integer (Hückel's rule).

Which of the Following Is Not One of Hückel's Criteria