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I am a student. I recently studied resonance in Benzene. I know that π electrons in Benzene are involved in resonance this means the electrons somewhat move in the process of resonance.

I have a question :

If electrons are moving in Benzene there should be a current?

However I have not seen any such fact in the books i am currently studying. Please tell me if this thing happens in Benzene or not.

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  • $\begingroup$ The current is within the molecule, the more interesting question, is shouldn't there be a magnetic field? $\endgroup$ – A.K. Nov 16 '18 at 3:47
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    $\begingroup$ See en.wikipedia.org/wiki/Aromatic_ring_current $\endgroup$ – MaxW Nov 16 '18 at 6:54
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I can't comment, but benzene has a ring current and that creates a magnetic field perpendicular to the current. Conversely, a magnetic field will create an induced current (Ampere's Law) in the ring (delocalized electrons from the pi bonds).

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Resonance translate our inability to write the molecule correctly with one drawing.

And this is because of quantum mechanics, if you study 1,3-butadiene with huckel method you can see that electrons are "more" on some bounding than other : They are everywhere but you have more chance to find them in some part of molecule.

Resonance do not imply any form of energy : the different drawing are equivalent to the same molecule

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