If you look at any organic reaction shows that break bonds in the reactants and forming new bonds in products. The breaking of bonds can be symmetrical, also called asymmetric or homolytic and heterolytic. The first originates neutral species with unpaired electrons called free radicals and the second produces ionic species .
1.1. homolytic cleavage: in this case, each species maintains the electron initially supplied to form the link. each of species formed are called free radicals, which are very unstable particles, energy and electrically neutral. For this breakdown is necessary for the presence of ultraviolet light (hv) or heat.
example of homolytic breaking.
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This image was made using the program ACD / ChemSketch 10.0
find in this direction a simulation of a homolytic break:
To apply and reflect:
- Does the presence of free radicals its effects on the formation of mutations in DNA?
- How do ultraviolet rays on your skin?
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