7589768
Description
Flashcards by Fauzia Ali, updated more than 1 year ago
|
Created by Fauzia Ali
almost 8 years ago
|
|
| Question | Answer |
| 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 |
Want to create your own Flashcards for free with GoConqr? Learn more.