Monohalomethane
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The monohalomethanes are organic compounds in which a hydrogen atom in methane is replaced by a halogen. They belong to the haloalkanes or to the subgroup of halomethanes.
Structural formula | ||||
Name | Fluoromethane Methyl fluoride |
Chloromethane Methyl chloride |
Bromomethane Methyl bromide |
Iodomethane Methyl iodide |
Melting point | −137,8 °C[1] | −97,4 °C[2] | −93,7 °C[3] | −66 °C[4] |
Boiling point | −78,4 °C[1] | −23,8 °C[2] | 4,0 °C[3] | 42 °C[4] |
Space-filling model |
The four common[lower-alpha 1] members are fluoromethane, chloromethane, bromomethane and iodomethane.
Historical name for this group is methyl halides; it's still widely used. The compounds of this class are often described as CH3X or MeX (X - any halogen, Me - methyl group).