Allyl cation [C3H5]+ Carbenium ion, allyl Carbenium ion, propenyl Prop-1-ene-3-ylium ion Propenyl cation 2 Reactions utilise: Allyl cation C 3 H 5   Charge = +1   Real ion. Gram formula weight (molecular mass) = 41.071 Allyl cation is defined with respect to the entities below: The entities below are defined with respect to: Allyl cation Allyl cation (generic) Allyl FMO (generic) Nucleophilic attack susceptible species (generic) pi-LUMO Lewis acid (generic) Real complex ion (generic) chemical compound molecule metal molecular science reaction mechanism ionic material acid base geometry reactivity synthesis science knowledge chemistry Lewis