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EspañolMETHYLENE
In chemistry, 'methylene' is a divalent functional group CH2 derived formally from methane. The name "methylene" is used for the following:
★ -CH2- group (bound by two single bonds) present e.g. in dichloromethane (alternative name is methylene chloride);
★ =CH2 group (bound by one double bond), present e.g. in formaldehyde (can be named methylene oxide, but it is not used/recommended). The better example is methylenecyclopropene.
★ :CH2 is a carbene known as methylene, carbenes are highly reactive organic molecules with a divalent carbon atom with only six valence electrons.
Increasing the number of methylene groups in a chain or ring increases the size and the lipid nature (lipophilicity) of the compound.
★ methyl
★ methylidyne
★ -CH2- group (bound by two single bonds) present e.g. in dichloromethane (alternative name is methylene chloride);
★ =CH2 group (bound by one double bond), present e.g. in formaldehyde (can be named methylene oxide, but it is not used/recommended). The better example is methylenecyclopropene.
★ :CH2 is a carbene known as methylene, carbenes are highly reactive organic molecules with a divalent carbon atom with only six valence electrons.
Increasing the number of methylene groups in a chain or ring increases the size and the lipid nature (lipophilicity) of the compound.
| Contents |
| See also |
See also
★ methyl
★ methylidyne
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