|Chapter 6: Reactions of Alkenes: Addition Reactions|
This is because alkyl groups are weakly electron donating
due to hyperconjugation and inductive effects.
Note that this is the same order as for carbocations. Resonance effects can further stabilise radicals when present.
|Alkyl radicals are sp2 hybridised, planar
systems at the radical C centre.
The p-orbital that is not utilised in the hybrids contains the single electron.
As they have an incomplete octet, radicals are excellent electrophiles and react readily with nucleophiles.
Alternatively, loss of H. can generate a π bond
Unlike carbocations, radicals do not tend to undergo rearrangements
Reactions involving radicals:
|© Dr. Ian Hunt, Department of Chemistry|