50% inversion of configuration of molecules take place in a___________________?
Correct answer: C. SN1 - reaction
- A. E1 - reaction
- B. E2 - reaction
- C. SN1 - reaction
- D. SN2 - reaction
Explanation
SN1 reactions form a planar carbocation intermediate, allowing nucleophilic attack from either side and producing approximately equal retention and inversion, including about 50% inversion. SN2 gives nearly complete inversion because attack occurs only from the backside. Students may choose SN2 because inversion is its famous stereochemical feature, but SN2 does not give 50% inversion.
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About Nucleophilic Substitution
Nucleophilic substitution replaces a leaving group in an alkyl halide when an electron-rich nucleophile attacks the carbon atom. The topic compares SN1 and SN2 mechanisms, including reaction conditions, substrate structure, solvent effects, nucleophile strength, carbocation formation and stereochemical changes, and distinguishes substitution from elimination.
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