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Methylene is the chemical species, R2C:, named after methane, in which two of the carbon atom's valence electrons form no bonds. The word is applicable to:
- the −CH2− group present, for example, in dichloromethane (also known as methylene chloride),
- the =CH2 group, which occurs in methylenecyclopropene,
- and the :CH2 molecule, a carbene known as methylene. A carbene is a highly reactive organic molecule having a divalent carbon atom with six valence electrons.
Methylene groups in a chain or ring contribute to its size and lipophilicity.
See also
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- This page was last modified on 17 October 2008, at 14:12.
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