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A circle inside a hexagon, standing for delocalised electrons.
Also known as: Aromatic circle, Delocalisation circle
A circle inside a hexagon shows the six electrons of benzene spread evenly around the ring rather than in three fixed double bonds. It is the more accurate picture and the less useful one for mechanism, which is why chemists still draw alternating double bonds when pushing electrons.
Represents the delocalised electrons of an aromatic ring, drawn as a circle within the hexagon.
Contexts: Laboratory
Is preferred as a description of the real structure but avoided in mechanisms, because a circle cannot be used to push a specific pair of electrons.
Contexts: Laboratory
A regular hexagon of six lines with a plain circle drawn inside it, not touching the sides.