Post on 13-Dec-2018
Bond dissociation energies for the cleavage of C–H bonds are used as a measure of radical stability.
Radicals are formed from covalent bonds by adding energy in the form of heat (Δ) or light (hv).
Ruptura HomolíGca
radical iniGator (e.g. peroxides)
Common ReacGons of Radicals Reaction of a Radical X• with a C–H Bond
Reaction of a Radical X• with a C=C
Radical AddiGon ReacGons to Double Bonds
AddiGon of HBr
HBr adds to alkenes to form alkyl bromides in the presence of light, heat, or peroxides.
Awarded jointly to Paul J. Crutzen, Mario J. Molina and F. Sherwood Rowland "for their work in atmospheric chemistry, par5cularly concerning the forma5on and decomposi5on of ozone".
The Nobel Prize in Chemistry 1995