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Aromatic Compounds Aromaticity pleasant odor unusually low reactivity- substitution, not addition unusually stable characteristic ring structurewith delocalized pi bonding Benzene - stability C6H6 (1,3,5-cyclohexatriene ?) no typical C=C reactionsunreactive with HX, X2, KMnO4 reaction requires extreme conditions when reaction does occur, it is substitution not addition Benzene - structure all C are sp2 (trigonal, 120° angles) ideal for a planar hexagon all C-C bonds are the same (139 pm) compare C-C (154 pm), C=C (134 pm) cyclic conjugated pi bonds are unusually stable (resonance) Nomenclature of Aromatics monosubstituted
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submitted by rakesh61 (1840 m) on 19 Sep 2007 18:21:10 IST (13 comments 386 views)
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