For example , the thiocyanate ion ( SCN − ) may attack from either the or the . For this reason , the SN2 reaction of an alkyl halide with SCN − often leads to a mixture of RSCN ( an alkyl thiocyanate ) and RNCS ( an alkyl isothiocyanate ) .
For example , the thiocyanate ion ( SCN − ) may attack from either the S or the N. For this reason , the SN2 reaction of an alkyl halide with SCN − often leads to a mixture of RSCN ( an alkyl thiocyanate ) and RNCS ( an alkyl isothiocyanate ) .