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Ch 6: Ionic Rxns

Substitution reactions and elimination reaction both deal with: Alkyl halides --> RX (F, Br, Cl, I)
What halogen is electronegative? Chlorine
Halogens don't like sharing ___. Electrons
Halogens want to do what with electrons? Steal them away and break themselves away.
Substitution reactions are similar to what kinds of reactions? Acid-base reactions
Nucleophile (def.) Likes positive particles
Sub. Rxn - What does "RX" represent? Substrate
Sub. Rxn - What does "Nu: ¯" represent? Nucleophile
Sub. Rxn - What does "X: ¯" Leaving Group
Substrate of Sn1 3º or 2º (requires formation of a relatively stable carbocation)
Substrate of Sn2 Methyl > 1º > 2º (requires unhindered substrate)
Nucleophile of Sn1 Weak Lewis base, neutral molecule, nucleophile may be the solvent (solvolysis)
Nucleopphile of Sn2 Strong Lewis base, rate favored by high concentration of nucleophile
Solvent in Sn1 Polar protic (e.g., alcohols, water)
Solvent in Sn2 Polar aprotic (e.g., DMF, DMSO)
Leaving group in both Sn1 and Sn2 I > Br > Cl > F (the weaker the base after the group departs, the better the leaving group
Carbocation (def.) Positively charged organic compound
Most stable substrate:
Least stable substrate: Methyl
What are the only type of hydrocarbons involved in Sn1 and Sn2 reactions? Alkyl Halides
The strongest base will be the _______ leaving group. Worst
The weakest base will be the ________ leaving group. Best
Created by: CBaney

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