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MHT CET202415 May 2024Evening ShiftChemistryHaloalkanes and HaloarenesActual

Which among the following is NOT a feature of S _ N 2 mechanism?

Options

  1. ASingle step mechanism.
  2. BBackside attack of nucleophile.
  3. CFormation of planar carbocation intermediate.
  4. DInvolves simultaneous bond breaking and bond forming.

Correct answer

C. Formation of planar carbocation intermediate.

Step-by-step solution

The (S_N 2 ) mechanism proceeds through a transition state where the nucleophile and the leaving group are both partially bonded to the central carbon atom. A carbocation intermediate is not formed; this is a characteristic of the (S_N 1 ) mechanism.

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