methyl

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methyl

(mĕth`əl), CH3, organic free radicalfree radical,
in chemistry, a molecule or atom that contains an unpaired electron but is neither positively nor negatively charged. Free radicals are usually highly reactive and unstable. They are produced by homolytic cleavage of a covalent bond (see chemical bond); i.e.
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 or alkyl groupalkyl group
, in chemistry, group of carbon and hydrogen atoms derived from an alkane molecule by removing one hydrogen atom (see radical). The name of the alkyl group is derived from the name of its alkane by replacing the -ane suffix with -yl, e.g.
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 derived from methanemethane
, CH4, colorless, odorless, gaseous saturated hydrocarbon; the simplest alkane. It is less dense than air, melts at −184°C;, and boils at −161.4°C;. It is combustible and can form explosive mixtures with air.
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 by the removal of one hydrogen atom.

methyl

[′meth·əl]
(organic chemistry)
The alkyl group derived from methane and usually written CH3‒. Also known as carbinyl.

methyl

1. of, consisting of, or containing the monovalent group of atoms CH3
2. an organometallic compound in which methyl groups are bound directly to a metal atom
References in periodicals archive ?
The dominant peaks are due to the methyl stretches at 2,954 and 2,897 [cm.sup.-1], the methyl/methylene deformation at 1473 [cm.sup.-1], the gem-dimethyl deformation at 1,390 and 1,367 [cm.sup.-1], and the mostly methyl rock vibration at 1,230 [cm.sup.-1].
While the methyl stretch at 2,970 [cm.sup.-1] is weak, it is noticeable due to the absence of other peaks in this region.
The methyl deformation band at 1,261 cm-1 is strong and sharp, and the methyl rock with contribution from the Si-C stretch at 798 [cm.sup.-1] is also strong.