| 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 |  |  |  |  |
Themonohalomethanes are organic compounds in which a hydrogen atom inmethane is replaced by ahalogen. They belong to thehaloalkanes or to the subgroup ofhalomethanes.
The four common[a] members arefluoromethane,chloromethane,bromomethane andiodomethane.
Historical name for this group ismethyl halides; it's still widely used. The compounds of this class are often described asCH3X or MeX (X - any halogen, Me -methyl group).
There are analogs with more than one hydrogen atom in methane is replaced by a halogen:
Analogs with carbon atom replaced with a heaviergroup 14 element are also known:
