An allylic carbocation is a resonance-stabilized carbocation in each of the two resonance forms of which the formal charge of +1 is on an allylic carbon. eg. 1: eg. 2: The lightest allylic carbocation (1) is called the allyl carbocation. see also primary allylic carbocation, secondary allylic carbocation, tertiary allylic carbocation
1. Using curved arrows draw at least one resonance structure for each of the following species. Note: all the charges are as shown but the lone pairs of electrons might be omitted so, add the lone pairs to help you track the movement of electrons.