R3.4 Electron-pair sharing reactions
This section concerns the movement of electron pairs which can be represented by curly arrows. Nucleophiles donate an electron pair to form a new bond, as another bond breaks heterolytically producing a leaving group. Nucleophilic substitution reactions of halogenoalkanes are used as an example. Electrophiles, species which accept a pair of electrons, are also covered, exemplified by using the electrophilic addition...