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Cyclopropenyl
cation Two pi electrons n = 0 |
Benzene Six pi electrons n = 1 |
Pyrrole Six pi electrons n = 1 |
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Furan Six pi electrons n = 1 |
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Pyridine Six pi electrons n = 1 |
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Imidazole Six pi electrons n = 1 |
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Naphthalene Ten pi electrons n = 2 |
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Cyclobutadiene Four pi electrons |
Cyclopentadienyl
cation Four pi electrons |
Cyclooctatetraene Eight pi electrons |