slide3 - x Highly localized charge (+ or -) is not as...

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Where We Are Going Today x Chapter 3 – Reactions of Alkanes Reaction Mechanisms Radicals Hyperconjugation Petroleum Chemistry Radical Chain Mechanisms – Halogenation Synthetic Organic Chemistry Catalysis of Chemical Reactions Resonance Forms Practice with Resonance Forms
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An Orbital Description of Hyperconjugation x Neighboring C-H bonds can overlap with partially filled p -orbitals; a stabilizing factor c8.html
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Effect of Catalysis on Chemical Reactions x Δ G o does not change; E a changes as the pathway (mechanism) changes c8.html
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Rules for Resonance
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Unformatted text preview: x Highly localized charge (+ or -) is not as stabilizing as “delocalized” charge – that is, charge spread out over more than one atom x Resonance spreads out charge distribution – this is almost always a highly stabilizing factor x The more a charge is spread out (i.e., the more resonance forms), the more stable is the ion or molecule x All resonance forms of a given molecule have the same charge x The relative positions of atoms in resonance forms do not change position (i.e., they do not move)...
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This note was uploaded on 01/25/2010 for the course CHEM chem 140A taught by Professor Dr.yang during the Spring '07 term at UCSD.

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