Propane, Propene and Their Radical Cations. Part 4: The structure of
propene radical cation.
This radical cation can be formed from propene via ionization of one of
the pi-electrons. The result is a significantly longer -HC-CH2
bond of 141.8 pm since the the pi-bond strength is reduced. The C-C
single bond is 145.1 pm long.
The propene radical cation can also be formed from the propane
radical cation by loss of two H-atoms as radicals.