protic solvent in SN2

[datdat]

---

Members don't see this ad.

I'm just wondering why protic solvent is not good for Sn2 rxn..
could anybody tell me the reason/

?

 

[vinny13]

I'm just wondering why protic solvent is not good for Sn2 rxn..
could anybody tell me the reason/

?

Polar protic solvent is not used in SN2 because it will stabilize the nucleophile and slow down the reaction. For SN1 a carbocation intermediate is formed and a polar protic solvent is needed to stabilize the carbocation.