methenium

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.

In the Vinony graph

Vinony's link graph records 197 inbound references to methenium, and connects out to outer space, acrylonitrile and methylene.

It is catalogued under topics including Carbocations, Chembox image size set and Ions.

Vinony links it to 10 Wikipedia language editions.

Chemical data

Formula: CH3+
Molecular weight: 15.035 g/mol
IUPAC name: carbanylium
SMILES: [CH3+]
InChIKey: JUHDUIDUEUEQND-UHFFFAOYSA-N
XLogP: 0.6
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 1

via PubChem

Wikidata facts

Subclass of: carbenium ion
Mass: 15.023475

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conjugate base: methylene
canonical SMILES: [CH3+]
Commons category: Methyl cation
chemical formula: CH₃⁺

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Encyclopedic overview

6 sections

Contents

Structure
Preparation and reactions
Detection
Origins of life
See also
References

==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.

Excerpted from Wikipedia’s “methenium” article, available under the CC BY-SA 4.0 licence.