Question

Why haloarenes are less reactive towards nucleophilic substitution reaction than haloalkanes?

Answer 1

Answer:

hey mate

Haloarenes are less reactive than haloalkanes towards nucleophilic substitution reaction. ... The sp2 hybridized carbon atom has more s-character because of which the electron pairs are more tightly held in the Haloarenes as compared to haloalkanes thus reducing the size of haloalkanes and making the Haloarenes stronger.

Answer 2

Aryl halides are less reactive towards nucleophilic substitution because of the following reasons: Resonance effect: In haloarenes there is delocalisation of electrons due to resonance. The short bond length (1.69A0) imparts stability to aryl halides and the bond cleavage becomes rather difficult.