Sat November 19, 2011 By:

why is the reactiviy of tertiary alkyl halide more in SN1 mechanism?

Expert Reply
Mon November 21, 2011
 SN1 reaction involves a carbocation intermediate and is commonly seen in reactions of secondary or tertiary alkyl halides under strongly basic conditions or, under strongly acidic conditions, with secondary or tertiary alcohols.
the carbocation intermediate formed in case of tetiary carbocation is stablised by inductive effect of three alkyl groups attached to the tertiary carbocation.For example in the case given below formation of the intermediate is stablised by inductive effect .Hence the reactivity of this reaction is more by SN1 mecanism.
We can also say that those reactions in which the intermediate formation is not stable occur by SN2 mecanism.
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