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An ion that has a positively charged carbon atom.

References in periodicals archive ?
But the silicon cation proved more difficult to make than the carbocation.
Like water, methanol is expected to have a similar inhibiting effect by transferring with the propagating carbocation and solvating pho-toacids [37].
The nitrogen stabilized carbocation is the conjugate acid of the imine and transfer of the hydrogen atom, attached to the nitrogen, to water yields the imine.
In fact the co-condensation proceeds as electrophilic substitution by carbocation, sources of which can be MCL or ether, or both.
The reaction occurs in three steps: (1) a carbocation is formed through the reaction of halogenated alkane with aluminium chloride; (2) the carbocation (acting as an electrophile) hits the benzene ring to form an arenium ion; (3) the arenium ion loses a proton to produce the alkylated benzene.
The rearrangement most likely occurs from the non-classical carbocation intermediate of the first reaction.
With this system, complexation of the Lewis acid coinitiator with the acetate group of IBEA dissociates the carbon-oxygen bond to produce a carbocation at the oxygen-stabilized secondary carbon atom of IBEA.
Its biosynthesis involves the reaction of 3-methyl-2-buten-1-ol pyrophosphate (7) to generate a transient allylic cation intermediate (8), which rapidly reacts with the electron-rich 3-methyl-3-buene-1-ol pyrophosphate (9) to form a carbon-carbon chemical bond and a second carbocation intermediate (10).
McClelland's research has run the gambit from physical organic chemistry, where his group pioneered the direct study of reactive intermediates of the tetrahedral intermediate and carbocation class, to biological and medicinal organic chemistry, where his group examined the properties of several important classes of drugs.