CBSE Class 12 Chemistry Notes: Haloalkanes and Haloarenes – Nomenclature of Halogen

NOMENCLATURE OF HALOGEN COMPOUNDS:-

i)  Nomenclature of haloalkanes (Alkyl halides)

• Selection of the longest carbon chain containing the halogen atom.
• Giving least possible no. to the halogen atom.
• If having double or triple bond between carbon atom least no. is given them
• Placing suitable suffixdi, tri and tetra for 2, 3, 4 halogen atoms.
• Giving suitable names haloalkanes, haloalkenes, haloalkynes.

Example:

i) Nomenclature of Haloarenes:- (IUPAC)

• They are named as aryl halides in commonsystem.
• We use numerical prefixes (1, 2), (1, 3), (1, 4) respectively for position of substituent w.r.t to halogen atom.
• Give least possible no. to the halogen atom.
• The compound we named as halo Benzenes.

Examples:

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