abstract:Annulenes are completely conjugated monocyclic hydrocarbons. They have the general formula CnHn (when n is an even number) or CnHn+1 (when n is an odd number).
With the increaseof the stress, the contents of 9 aromatic constituents like1,6-methylene annuleneincreased, whereas those of 8 constituents as linalooldecreased.