Why is benzene less reactive than alkenes?

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A-Level Chemistry (Module 6) FlashCards sobre Why is benzene less reactive than alkenes?, criado por Fauzia Ali em 08-02-2017.
Fauzia Ali
FlashCards por Fauzia Ali, atualizado more than 1 year ago
Fauzia Ali
Criado por Fauzia Ali quase 8 anos atrás
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Questão Responda
Why is benzene less reactive than alkenes?
In cyclohexene the pi bond is made by sideways overlap of p orbitals on adjacent carbon atoms. Whereas for benzene, the pi bond is made by the sideways overlap of p orbitals on all 6 carbons atoms adjacent to each other Therefore on benzene the 6 pi electrons are delocalised over 6 carbon atoms On cyclohexane the two pi electrons are localised between the two carbon atoms
Therefore cyclohexene has a higher pi electron density than benzene and will attract electrophiles more strongly as it induces a bigger dipole So alkenes are more reactive than benzene

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