Question

Write the characteristics features of SN2 mechanisms with example​

Answer 1

Mechanism of Nucleophilic Substitution. The term SN2 means that two molecules are involved in the actual transition state: The departure of the leaving group occurs simultaneously with the backside attack by the nucleophile.

Answer 2

• Single step reaction.

• Rate of reaction = K [R — L] [Nu(:)]

• It is a second order reaction.

• Rate is dependent on concentration and strength of Nucleophile.

• Transition state is formed which is sp² hybridized, planar structure.

• No carbo-cation intermediate formation.

• Leaving group should be strong i.e. weak base