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In an S(N)1reaction on chiral centres, t...

In an `S_(N)1`reaction on chiral centres, there is

A

`100%` retention

B

`100%` inversion

C

`100%` racemisation

D

inversion more than retention leading to partial racesmisation

Text Solution

Verified by Experts

The correct Answer is:
D
`S_(N)1` mechansim occurs in two steps:
Step 1:

Step 2:

Besides attacking the intermediate carbocation, the nucleophile can also attack the `TS`, Since this attack is always from the back side, there is more inversion than retention leading to partial racemisation.
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