Benzene

Benzene is an aromatic hydrocarbon with the formula C6H6. The bonds between the carbons have the bond order 1.5 due to a delocalized electron system based on its aromaticity. It can also be thought of as having three separate double bonds, which is known as the Kekulé form, after August Kekulé who proposed it. The molecule is completely flat. Benzene is used as a solvent and precursor to other chemicals.