Aromaticity

Aromaticity

1. The structure of benzene

   • C6H6
   • Carbon atoms form a flat hexagon
   • C-C-C bond angle of 120
   • Delocalised electron structure with a pie-cloud of electrons around the ring
   • The C-C bond has the same length and that this is the intermediate in size between lengths of the double and single bonds

2. The delocalised energy of benzene

   • Reaction of cyclohexane with hydrogen to produce cyclohexane, gives out 120 kJ mol