methyl

chemical radical

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June 30, 2026

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A methyl group is a fundamental structural unit in organic chemistry, consisting of one carbon atom bonded to three hydrogen atoms. This unit is attached to the rest of a molecule. The methyl radical (CH₃) is a highly reactive, transient intermediate in many chemical reactions. Radicals, in general, are molecules with at least one unpaired electron, making them unstable and prone to reacting with other molecules to form stable pairs. While most radicals exist only briefly, some can be stabilized by their structure.12

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carbonium ion
Classification.
…for these ions is the methyl cation, with the formula CH⁺₃. Schematically, the structure is as shown below (the solid lines representing bonds between atoms):
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…for these ions is the methyl cation, with the formula CH⁺₃. Schematically, the structure is as shown below (the solid lines representing bonds between atoms):
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radical
Unstable radicals
Simple free radicals such as methyl, ·CH₃, also exist and play key roles as transient intermediates in many chemical reactions. The existence of the methyl radical was first demonstrated by Friedrich A. Paneth and W. Hofeditz in 1929 by the following experiment. The vapours of tetramethyllead, Pb(CH₃)₄, mixed with gaseous…
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Simple free radicals such as methyl, ·CH₃, also exist and play key roles as transient intermediates in many chemical reactions. The existence of the methyl radical was first demonstrated by Friedrich A. Paneth and W. Hofeditz in 1929 by the following experiment. The vapours of tetramethyllead, Pb(CH₃)₄, mixed with gaseous…
Read More