An organic cation in which the positive charge is located on a carbon atom.
- The key step in a unimolecular reaction is the formation of the carbon cation, or carbonium ion, by the departure of the leaving group.
- This paper reviews the concept of carbonium ions, their formation, stability and reactions.
- If a carbonium ion is involved in lysozyme catalysis then the TS structure will involve a planar, sp-hybridized C - 1.
Early 20th century: carbonium from carbo- 'carbon', on the pattern of ammonium.
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Line breaks: car|bo¦nium ion
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