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EntityQ3333706· pop 10· linked from 197 articles

Also known as methyl cation, methylium, protonated methylene, carbenium, trihydridocarbon(1+), carbanylium, [CH3](+), CH3(+)

In organic chemistry, methenium (also called methylium, carbenium, methyl cation, or protonated methylene) is a cation with the formula . It can be viewed as a methylene radical (:) with an added proton (), or as a methyl radical (•) with one electron removed. It is a carbocation and an enium ion, making it the simplest of the carbenium ions.

Wikidata facts

Mass
15.023475
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canonical SMILES
[CH3+]
Commons category
Methyl cation
chemical formula
CH₃⁺
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6 sections
Contents
  • Structure
  • Preparation and reactions
  • Detection
  • Origins of life
  • See also
  • References

In organic chemistry, methenium (also called methylium, carbenium, methyl cation, or protonated methylene) is a cation with the formula . It can be viewed as a methylene radical (:) with an added proton (), or as a methyl radical (•) with one electron removed. It is a carbocation and an enium ion, making it the simplest of the carbenium ions.

==Structure== Experiments and calculations generally agree that the methenium ion is planar, with threefold symmetry. The carbon atom is a prototypical (and exact) example of sp2 hybridization.

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