Halogenation

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Halogenation - Alkene Reaction Mechanism
8:01 — by Leah F.

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Key Questions

  • Halogenation is used for making the halide of the respective chemical. In organic chemistry, we say that we can make an alkyl halide by the halogenation of the saturated or unsaturated hydro-carbon(s) as per our requirement.

  • It's the addition of an alkyne to a halogen. It can be partial or total.

    If you react an alkyne with 1 mol of Cl₂, for example, it'll be partial because only one pi bond will be broken and one Cl will attach to each of the carbons that had the double bond.

    If you react the product of a partial halogenation with another mole of Cl₂, you'll no longer have pi bonds — only sigma ones.

    It works like this:

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  • It's the addition of a halogen to the C=C double bond of an alkene.

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    An example is the addition of chlorine to ethylene.

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    The product has Cl atoms on adjacent carbon atoms.

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