27. An alternative step in the free radical chlorination mechanism, of methane might be as follows: What is the reason that this step is not observed? Consider the "propagation step-2" of th radical mechanism. Cl• + CH4 → CH3CI + H• 1. Cl• cannot approach the carbon atom close enough to form a bond because of steric interference from hydrogens 2. H• is not among the products of methane chlorination 3. Cl• can only bond to hydrogen atoms 4. this step is too endothermic as compared to alternatives 5. this step is too exothermic

27. An alternative step in the free radical chlorination mechanism, of methane might be as follows: What is the reason that this step is not observed? Consider the "propagation step-2" of th radical mechanism. Cl• + CH4 → CH3CI + H• 1. Cl• cannot approach the carbon atom close enough to form a bond because of steric interference from hydrogens 2. H• is not among the products of methane chlorination 3. Cl• can only bond to hydrogen atoms 4. this step is too endothermic as compared to alternatives 5. this step is too exothermic

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter8: Haloalkanes, Halogenation, And Radical Reactions

Section: Chapter Questions

Problem 8.21P

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