what are SN1 & SN2 rections?

Asked by  | 2nd Jul, 2008, 09:51: PM

Expert Answer:

The SN1 reaction is a substitution reaction in organic chemistry. SN stands for nucleophilic substitution and the 1 represents the fact that the rate-determining step is unimolecular.It involves a carbocation intermediate and is commonly seen in reactions of secondary or tertiary alkyl halides or, under strongly acidic conditions, with secondary or tertiary alcohols

SN2 reaction (also known as bimolecular nucleophilic substitution) is a type of nucleophilic substitution, where a lone pair from a nucleophile attacks an electron deficient electrophilic center and bonds to it, expelling another group called a leaving group. Thus the incoming group replaces the leaving group in one step.

Answered by  | 3rd Jul, 2008, 01:02: PM

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