Hückel's Rule · 4n+2 = Aromatic
unseel.com · Frost circle → MO ladder · 2, 6, 10, 14…
π electrons 6
Verdict aromatic
Stage a ring of p orbitals
Ring carbon (sp²)
p orbital / MO level
π electron
Closed shell (4n+2)
Unpaired e⁻ (4n)
Unseel.com · Hückel's Rule