Q7 / 90 · JEE Main 2013 (07 Apr) · Chemistry

A solution of (-)1-chloro-1-phenylethane in toluene racemises slowly in the presence of a small amount of SbCl5, due to the formation of :

  • Correct answer
    A
    Carbocation
  • B
    Free radical
  • C
    Carbanion
  • D
    Carbene

Solution

(-) - 1 - chloro-1-phenylethane is:

 Figure.

Figure

With SbCl5 carbocation is formed. As the carbocation is planar, Cl ⊖ can again attack from both sides giving racemic mixture. (d, l mixture formed)

Hence, the correct answer is option: 'A'.

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