How many of the given compounds are aromatic?

Shouldn't d be aromatic because bond breaking and stuff?
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15 Replies
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Nimboi
Nimboi2mo ago
(d) is 12 electrons in conjugation innit so should be antiaromatic
SirLancelotDuLac
SirLancelotDuLacOP2mo ago
Oh we also have to check that?
Sheriff
Sheriff2mo ago
i think there's 12 pi electrons so it's antiaromatic (4n)
Nimboi
Nimboi2mo ago
there are criteria for aromaticity 1. should be planar 2. should be fully conjugated 3. should be cyclic 4. should follow Huckel's rule, (4n+2)pi electrons
SirLancelotDuLac
SirLancelotDuLacOP2mo ago
Can't we make like 2 rings with 6 pi electrons each?
Nimboi
Nimboi2mo ago
if the resonance of one ring bleeds into the other then i don't think you can consider them to be 2 separate systems eg. the minus charge could be in either ring thanks to the resonating double bond at the top
SirLancelotDuLac
SirLancelotDuLacOP2mo ago
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SirLancelotDuLac
SirLancelotDuLacOP2mo ago
Ah I see.
SirLancelotDuLac
SirLancelotDuLacOP2mo ago
This is aromatic tho?
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Mandy34
Mandy342mo ago
Every cyclic atom must be sp² hence d isn't aromatic This is azulene i think
Nimboi
Nimboi2mo ago
10 pi electrons in conjugation that fulfills the 4n+2 rule
SirLancelotDuLac
SirLancelotDuLacOP2mo ago
Oh right. +solved @Nimboi @Flame Tests Lover @Sheriff
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