During reactions of this type, a complete inversion of configuration takes place and, in them, the substituent concertedly attacks opposite the leaving group.
This pathway has a vanishing small reaction rate for tertiary halides due to steric hindrance so an alternative carbocation pathway is strongly preferred. During reactions of this type, a complete inversion of configuration takes place and, in them, the substituent concertedly attacks opposite the leaving group. One example of them is the reaction of n-butyl bromide with iodide to produce a bromide and n-butyl iodide, while another example is the reaction of chloromethane and sodium hydroxide to produce methanol and sodium chloride. FTP, identify this type of chemical reaction initiated by the approach of an electron donor species and entailing a nucleophilic substitution with two species.
This pathway has a vanishing small reaction rate for tertiary halides due to steric hindrance so an alternative carbocation pathway is strongly preferred.
SN2 (accept bimolecular nucleophilic substitution before "nucleophilic;" prompt on it afterwards)