Why is pyrrole aromatic?

[Xo1991]

Isn't Nitrogen sp3?

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[trocha86]

pyrrole has lone pairs inside on the N which adds it to the electrons making it 6 pi idk if that helps im not great at explaining things lol

 

[bluemoon27]

Look at the nitrogens lone pairs. no technically its not sp3, cuz those electrons can be delocalized in the ring cuz its next to a double bond, so u can delocalize all those electrons around the ring. i remember chad mentioning that for every atom thats allylic like that, u count one of the electrons pair or the pi bond to help determine aromatic or not. basically, so for every atom like nitrogen, it can either contribute a lone pair or a pi bond (assuming it has them). in case it has both a lone pair and pi electrons, u will count only 1 of them.

not sure if that made sense. i recommend watching chads vid on aromaticity. hes really good at explainig it.

 

[trocha86]

I agree chad videos are the BEST!!!