Table 1.

Example of aromatic or non-aromatic choices made for the representation of several compounds with arguable aromaticity

Pyrrole	c1ccc[nH]1
Thyophene	c1cccs1
Cyclopentadiene	C1=CC=CC1
Cyclopentadienyl anion	[cH-]1cccc1
Cyclopentadienone	c1(=O)cccc1
2-pyridone	c1(=O)[nH]cccc1
Uracil	C1(=O)NC(=O)NC=C1
Pyridine oxide	c1ccccn=O
Quinone	O=C1C=CC(=O)C=C1
Anthraquinone	c12ccccc1C(=O)c1ccccc1C2(=O)
9-Methylene-fluorene	c12ccccc1C(=C)c1ccccc12
Imidazolidene metal carbene	[Ni]=C1N(C)C=CN1C
${\text{C}}_{60}$	c12c3c4c5c1c1c6c7c2c2c8c3c3c9c4c4c%10c 5c5c1c1c6c6c%11c7c2c2c7c8c3c3c8c9c4c4c 9c%10c5c5c1c1c6c6c%11c2c2c7c3c3c8c4c4c 9c5c1c1c6c2c3c41
A tetramethyl derivative of C${}_{60}$	C12(C)C3C4(C)c5c1c1c6c7c2c2C8(C)C=3C3 (C)c9c4c4c%10c5c5c1c1c6c6c%11c7c2c2c7c 8c3c3c8c9c4c4c9c%10c5c5c1c1c6c6c%11c2c 2c7c3c3c8c4c4c9c5c1c1c6c2c3c41