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methylene
(redirected from methylene group)

    Also found in: Dictionary/thesaurus, Wikipedia 0.03 sec.
methylene
of, consisting of, or containing the divalent group of atoms =CH2
methylene [′meth·ə‚lēn]
(organic chemistry)
‒CH2‒ A radical that contains a bivalent carbon.


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Since the polymer is composed almost completely of methylene groups, its infrared spectrum would be expected to consist solely of methylene stretches and bends.
Identification of polymers by IR spectroscopy by O'Keefe, Jerome F. / Rubber World
Introduction of methylene groups is just a first step," says coauthor Takashi Tatsumi of Yokohama National University.
Zeolites get an organic makeover. (Materials Science) by Science News
Of all isocyanates, only MDI as a constituent of the macromolecule is a suitable co-reactant for peroxide vulcanization; here we get radical formations through the central methylene group.
An introduction to the chemistry of polyurethane rubbers by Ahnemiller, Jim / Rubber World
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