Which of the following are not used as catalyst in friedel craft reactions?

Question

Which of the following are not used as catalyst in friedel craft reactions? (A) AlCl 3 (B) SiCl 4 (C) BF 3 (D) SnCl 4

Tardigrade Admin · Accepted Answer

Si cannot expand its covalancy beyond 4 and hence; SiCl 4 cannot act as a catalyst. Because of big size of Cl atoms and weak interaction b / w lone pair of Cl and Si.

Q. Which of the following are not used as catalyst in friedel craft reactions?

$A lC l_{3}$

$S i C l_{4}$

$B F_{3}$

$S n C l_{4}$

$S i$ cannot expand its covalancy beyond $4$ and hence; $S i C l_{4}$ cannot act as a catalyst. Because of big size of $Cl$ atoms and weak interaction $b / w$ lone pair of $Cl$ and $S i$ .

Q. Which of the following are not used as catalyst in friedel craft reactions?

AlCl3​

SiCl4​

BF3​

SnCl4​

Si cannot expand its covalancy beyond 4 and hence; SiCl4​ cannot act as a catalyst. Because of big size of Cl atoms and weak interaction b/w lone pair of Cl and Si.

$A lC l_{3}$

$S i C l_{4}$

$B F_{3}$

$S n C l_{4}$

$S i$ cannot expand its covalancy beyond $4$ and hence; $S i C l_{4}$ cannot act as a catalyst. Because of big size of $Cl$ atoms and weak interaction $b / w$ lone pair of $Cl$ and $S i$ .