Delocalization and Resonance

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Chapter 6 Delocalization and
Resonance
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How we Draw Resonance Contibutors
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How we Draw Resonance Contibutors

• The only electrons can move are the
• nonbonding electrons
• - p - electrons

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Move the nonbonding pair toward a p bond
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Move a single nonbonding electron toward a p
bond
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Judgment For Resonance Contributors
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Some Chemical Consequences of Elelectron
Delocalization
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Some Chemical Consequences of Elelectron
Delocalization
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Some Chemical Consequences of Elelectron
Delocalization
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Effect OF Delocalized Electrons ON pKa
CH3C OH CH3CH2OH pKa 4.76 pKa 15.9
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A Molecular Orbital Description OF Stability
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An Introduction
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The Allyl Cation, the Allyl Radical, and
Allyl anion
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1,3,5-Hexatriene and Benzene
H2CCH-CHCH-CHCH2
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