Aromatic Chemistry - Benzene

208

actual enthalpy of hydrogenation of benzene

bromine

benzene does not react in an aqueous solution with ___________

electron density

benzene has a high ____________ ___________ so attracts electrophiles

119

enthalpy of hydrogenation of cyclohexene

sigma bonds

in benzene, each carbon forms ___ ________ with the adjacent carbon atoms

pi bond

in benzene, the carbons 4th electron is shared in a ___ __________

stability

it is the ring of delocalisation which explains carbon's stability

stable

it is too ___________ to undergo electrophilic addition

0.14nm

length of all carbon-carbon bonds in benzene

C6H6

molecular formula of benzene

delocalisation energy

name of extra stability of benzene

cylcohexa-1,3,5-triene

name of theoretical structure that was benzene suspect

electrophiles

the _________________ cannot be added to benzene, they need to be produced in reactions with conditions which are usually severe

delocalised

the pi bonds overlap, causing benzene to have a ring of ________________ electrons

double

the theoretical structure of cyclohexa-1,3,5-triene would have 3 single and 3 _________ bonds

electrophilic substitution

the type of reaction which arenes undergo

357

theoretical enthalpy of hydrogenation of cyclohexa-1,3,5-triene