Question

In halogenation of aromatic hydrocarbon, a halogen carrier is used which is generally a Lewis acid. The main function of this reagent is to generate the species :

• A. $X$
• B. $X^{-}$
• C. $X^{+}$
• D. $X^{\bullet }$

Answer 1

The correct option is C $X^{+}$

Halogen carrier generates an electrophile with the help of halogen. e.g. during chlorination ${Cl}^{+}$ is generated.

$Al{X}_3+X_2⟶{Al{X}_4}^{-}+X^{+}$