Arrange the carbanions, $(C H_{3})_{3} ¯ ¯¯ ¯ C, ¯ ¯¯ ¯ C C l_{3}, (C H_{3})_{2} ¯ ¯¯ ¯ C H, C_{6} H_{5} ¯ ¯¯ ¯ C H_{2}$ , in order of their decreasing stability:

C_{6} H_{5} ¯ ¯¯ ¯ C H_{2} > ¯ ¯¯ ¯ C C l_{3} > (C H_{3})_{3} ¯ ¯¯ ¯ C > (C H_{3})_{2} ¯ ¯¯ ¯ C H

No worries! We‘ve got your back. Try BYJU‘S free classes today!

(C H 3)_{2} ¯ ¯¯ ¯ C H > ¯ ¯¯ ¯ C C l_{3} > C_{6} H_{5} ¯ ¯¯ ¯ C H_{2} > (C H_{3})_{3} ¯ ¯¯ ¯ C

No worries! We‘ve got your back. Try BYJU‘S free classes today!

¯ ¯¯ ¯ C C l_{3} > C_{6} H_{5} ¯ ¯¯ ¯ C H_{2} > (C H_{3})_{2} ¯ ¯¯ ¯ C H > (C H_{3})_{3} ¯ ¯¯ ¯ C

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

(C H_{3})_{3} ¯ ¯¯ ¯ C > (C H_{3})_{2} ¯ ¯¯ ¯ C H > C_{6} H_{5} ¯ ¯¯ ¯ C H_{2} > ¯ ¯¯ ¯ C C l_{3}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $¯ ¯¯ ¯ C C l_{3} > C_{6} H_{5} ¯ ¯¯ ¯ C H_{2} > (C H_{3})_{2} ¯ ¯¯ ¯ C H > (C H_{3})_{3} ¯ ¯¯ ¯ C$
Due to the $- I$ effect of three chlorine atoms and due to $p π - d π$ bonding $C C l_{3}^{-}$ is extra stable.
Carbanion follow stability order.
$¯ ¯¯ ¯ C C l_{3} > C_{6} H_{5} ¯ ¯¯ ¯ C H_{2} > (C H_{3})_{2} ¯ ¯¯ ¯ C H > (C H_{3})_{3} ¯ ¯¯ ¯ C$

In $C_{6} H_{5} C H_{2}^{-}$ the $- M$ effect delocalizes the -ve charge on carbon. The $C H_{3}$ group in $1^{s t}$ and $3^{r d}$ destabilizes the -ve charge on carbon.

Suggest Corrections

Similar questions

The correct order of stability of the following carbanions is:

$(C H_{3})_{3} C^{-},^{-} C C l_{3}, (C H_{3})_{2} C H^{-}, C_{6} H_{5} - C H_{2}^{-}$

The arrangement of $(C H_{3})_{3} C -, (C H_{3})_{2} C H -, C H_{3} C H_{2} -$ When attached to a benzene or an unsaturated group in increasing order of inductive effect is:

The correct order of stability of the following carbanions is:

$(C H_{3})_{3} C^{-},^{-} C C l_{3}, (C H_{3})_{2} C H^{-}, C_{6} H_{5} - C H_{2}^{-}$

Q. The order of decreasing stability of the following carbanion is:
(i)

{(C H_{3})}_{3} C^{-}

(ii)

C {H_{3}}^{-}

(iii)

C H_{3} C {H_{2}}^{-}

(iv)

{(C H_{3})}_{2} C H^{-}

Q. Rank the transition states that occur during the following reaction steps in order of increasing stability

(l e a s t \to m o s t s t a b l e)

H_{3} C - + O H_{2} \to C H_{3}^{+} + H_{2} O

(C H_{3})_{3} C - + O H_{2} \to - (C H_{3})_{3} C + H_{2} O

(C H_{3})_{2} C H - + O H_{2} \to (C H_{3})_{2} C H^{+} + H_{2} O

Join BYJU'S Learning Program

Arrange the carbanions, (CH3)3¯¯¯¯C,¯¯¯¯CCl3,(CH3)2¯¯¯¯CH, C6H5¯¯¯¯CH2 , in order of their decreasing stability:

Arrange the carbanions, $(C H_{3})_{3} ¯ ¯¯ ¯ C, ¯ ¯¯ ¯ C C l_{3}, (C H_{3})_{2} ¯ ¯¯ ¯ C H, C_{6} H_{5} ¯ ¯¯ ¯ C H_{2}$ , in order of their decreasing stability: