wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Write correct order of stability of following carbocations:

A
(I) > (II) > (III) < (IV)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
(III) > (II) > (I) > (IV)
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
(III) > (I) > (II) > (IV)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
(III) > (II) > (IV) > (I)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B (III) > (II) > (I) > (IV)
Stability of carbocation Number of α Hydrogens

Compound (I) has 1 α H .
α Hydrogens at bridge head carbon are not involved in hyperconjugation because it leads to a strained carbocation.
Thus, zero α H involved in hyperconjugation.

Compound (II) has 4 α H
But, 3 α H involved in hyperconjugation.



Compound (III) has 6 α H


In compound (IV), carbocation is at bridge head position, it is the least stable because presence of carbocation creates a strain at the already strained position.
Thus, the order of stability of carbocation is
(III) > (II) > (I) > (IV)

flag
Suggest Corrections
thumbs-up
4
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon