Halo alkanes are the compounds containing halogen atom attached to the sp3 hybridized carbon atom of an alkyl group. Haloarenes are the compounds. Do you know haloalkanes and haloarenes persist in the environment? Haloarenes were used as herbicides during Vietnam War for defoliating the jungles and. Haloalkanes and haloarenes contain halogens. In this lesson, we will learn what they are and some properties of them. We will also learn some.


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If hydrogen halides are used then only one halogen is added.


haloalkanes haloarenes If di-halogens are used then a di-halogen forms. Hydrogen halides are added by having the double bond attack the hydrogen halide such as HBr.

This puts the hydrogen onto one of the carbon atoms, and a haloalkanes haloarenes charge on the other carbon. The first steps puts a hydrogen haloalkanes haloarenes a carbon and a positive charge on the other carbon The negatively charged bromine can then be added to the carbon to form haloalkanes haloarenes haloalkane: The bromine is added to form the haloalkane When starting with a di-halogen it first needs to be primed, as with electrophilic substitution, to form partial negative and positive charges.


Haloalkanes haloarenes this occurs the double bond can attack adding one of the bromines to the compound like with electrophilic substitution. After this occurs the second bromine is also added forming a di-bromide haloalkane: By Halogenation of Aromatic Hydrocarbons It is haloalkanes haloarenes electrophilic substitution reaction.

By Side Chain Halogenation It involves free radical mechanism.

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From Benzene Diazonium Salt 4. Aryl halides are colourless liquids or colourless solids with characteristic odour.

Boiling point generally increases with increase in the size of aryl group or halogen atom. The melting point of p -isomer is haloalkanes haloarenes than 0- and m-isomer.


This is because of more symmetrical nature of p-isomer. Due to resonance in chlorobenzene, C-CI bond is shorter and hence, its dipole moment is less than that haloalkanes haloarenes.

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Chemical Properties of Aryl Halides 1. She is also an Indian Academy of Science fellow and has haloalkanes haloarenes publications from reputed journals to her haloalkanes haloarenes. At Tutorialspoint, she is managing chemistry content creation.

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