Most stable species:
General Organic Chemistry (GOC) · Class 11 · JEE Main Previous Year Question
Most stable species:
- a✓
Cyclopropyl cation
- b
Cyclopropyl anion
- c
Cyclopentadienyl cation
- d
Cyclohexadienyl
Cyclopropyl cation
Step 1: Identifying Aromatic Stability
- (a) Cyclopropenyl cation: electrons, in . It is Aromatic and highly stable.
- (b) Cyclopropenyl anion: electrons. Anti-aromatic. (Unstable).
- (c) Cyclopentadienyl cation: electrons. Anti-aromatic. (Unstable).
- (d) Cyclohexadienyl radical/cation: Non-aromatic.
Step 2: Conclusion The cyclopropenyl cation (a) is the only aromatic species among the choices.
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