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Что (кто) такое méthylène - определение
WIKIMEDIA DISAMBIGUATION PAGE
Methene; Methylenes; Methylene (disambiguation)
Methylene
·noun A hydrocarbon radical, CH2, not known in the free state, but regarded as an essential residue and component of certain derivatives of methane; as, methylene bromide, CH2Br2;
- formerly called also methene.
methylene
['m???li:n]
¦ noun [as modifier] Chemistry of or denoting the divalent radical ?CH2?.
Origin
C19: from Fr. methylene (formed irregularly from Gk methu 'wine' + hule 'wood') + -ene.
Methylene group
![Acidity of [[diethyl malonate]], a 1,3-dicarbonyl compound](https://commons.wikimedia.org/wiki/Special:FilePath/Diethyl malonate acidity vectorized.svg?width=200 "Acidity of [[diethyl malonate]], a 1,3-dicarbonyl compound")
FUNCTIONAL GROUP
Activated methylene
In organic chemistry, a methylene group is any part of a molecule that consists of two hydrogen atoms bound to a carbon atom, which is connected to the remainder of the molecule by two single bonds. The group may be represented as , where the '<' denotes the two bonds.
Википедия
Methylene
Methylene may refer to:
- Methylene group or methylene bridge (CH2< or equivalently -CH2-), a part of a molecule connected to the rest of the molecule by two single bonds.
- An older name for methylidene (=CH2), a part of a molecule connected to another atom by a double bond.
- Methylene (compound) (CH2), an organic compound.
