Ch. 6 Aromatic compounds
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| any compound that is not aromatic | aliphatic, or "fatty"
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| Huckel's rule | 4n+2pi electrons is an aromatic compound
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| compound that fits characteristics of aromatic except Huckel's rule | antiaromatic
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| aromatic compounds referred to as | aryl and arenes
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| ortho or 0 | 1,2 disubstituted
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| meta or m | 1,3 disubstituted
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| para or p | 1,4 disubstituted
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| benzene characteristics | all 6 C atoms are sp2 hybridized, each of the six orbitals overlaps equally with its two neighbors. as a result delocalized e- form 2 pi e- clouds, one above plane, one below
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| aromatic rings react with bromine or chlorine in the presence of what | a Lewis acid such as FeCl3, FeBr3, AlBr3, AlCl3
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| types of substitution reactions benzene can undergo | halogenation, sulfonation, nitration, alkylation, and acylation
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| what is the least reactive substituted aromatic compound | Nitro compound.
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| activators | substituent groups that donate electron density
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| deactivators | substituent groups that withdraw electron density
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