Benzene rings

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Arenes:

Aromatic hydrocarbons containing one or more benzene ring.

A benzene molecule is made of 6 carbon atoms in a ring each of which are bonded to 1 hydrogen bond.

Aromatic Carbons have strong sents

Kekule's structure

Kekule suggested that benzene had 3 double bonds between the carbon atoms and that there are 2 forms, differing by the position of the double bonds.

However the Benzene does not react like a alkene which it should because of the double bonds for example, each c=c is expected to react in bromine water causing it to become decolourised.

The shape of benzene when observed does not fit the kekule model, because of the double bonds the shape would not be equilateral but when it is observed it is equilateral.

The deocalised model of benzene:

Benzene is a planar hexagonal ring in which each carbon atom is bonded to 2 other carbon atoms and 1 hydrogen atom

The shape around each carbon atom is trigonal planar with a bond angle of 120

P orbitals from each carbon are delocalised into 2 rings above and below the