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AM⚡ SN1 vs SN2 – The Ultimate Nucleophilic Showdown! ⚡
In the world of Organic Chemistry, substitution reactions rule the game — and two stars dominate the stage: SN1 and SN2 🔥
🧪 SN1 (Substitution Nucleophilic Unimolecular)
• Two-step mechanism
• Formation of a carbocation intermediate
• Rate depends only on substrate → Rate = k[RX]
• Favored by tertiary alkyl halides
• Works best in polar protic solvents
• Leads to racemization (mixture of configurations)
⚡ Slow first step, stable carbocation, then nucleophile attacks — patience wins here!
🧪 SN2 (Substitution Nucleophilic Bimolecular)
• One-step, concerted mechanism
• No intermediate formed
• Rate depends on both substrate & nucleophile → Rate = k[RX][Nu⁻]
• Favored by primary alkyl halides
• Works best in polar aprotic solvents
• Leads to inversion of configuration (Walden inversion)
⚡ Fast, backside attack, single transition state — one clean powerful strike!
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