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  2. Carbocation - Wikipedia

    en.wikipedia.org/wiki/Carbocation

    A carbocation is an ion with a positively charged carbon atom. Among the simplest examples are the methenium CH + 3, methanium CH + 5, acylium ions RCO +, and vinyl C ...

  3. Vinyl cation - Wikipedia

    en.wikipedia.org/wiki/Vinyl_cation

    The vinyl cation is a carbocation with the positive charge on an alkene carbon. Its empirical formula of the parent ion is C 2 H + 3.Vinyl cation are invoked as reactive intermediates in solvolysis of vinyl halides, [1] [2] as well as electrophilic addition to alkynes and allenes.

  4. Methenium - Wikipedia

    en.wikipedia.org/wiki/Methenium

    In organic chemistry, methenium (also called methylium, carbenium, [2] methyl cation, or protonated methylene) is a cation with the formula CH + 3.It can be viewed as a methylene radical (: CH

  5. Category:Carbocations - Wikipedia

    en.wikipedia.org/wiki/Category:Carbocations

    A carbocation is a compound containing a positively charged carbon atom. Subcategories. This category has only the following subcategory. C. Cycloheptatrienyl ...

  6. Carbenium ion - Wikipedia

    en.wikipedia.org/wiki/Carbenium_ion

    A carbocation may be stabilized by resonance by a carbon–carbon double bond or by the lone pair of a heteroatom adjacent to the ionized carbon. The allyl cation CH 2 =CH−CH + 2 and benzyl cation C 6 H 5 −CH + 2 are more stable than most other carbenium ions due to donation of electron density from π systems to the cationic center. [ 20 ]

  7. Carbonium ion - Wikipedia

    en.wikipedia.org/wiki/Carbonium_ion

    The 2-Norbornyl cation is one of the best characterized carbonium ion. It is the prototype for non-classical ions. As indicated first by low-temperature NMR spectroscopy and confirmed by X-ray crystallography, [1] it has a symmetric structure with an RCH 2 + group bonded to an alkene group, stabilized by a bicyclic structure.

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  9. Markovnikov's rule - Wikipedia

    en.wikipedia.org/wiki/Markovnikov's_rule

    The chemical basis for Markovnikov's Rule is the formation of the most stable carbocation during the addition process. The addition of the hydrogen ion to one carbon atom in the alkene creates a positive charge on the other carbon, forming a carbocation intermediate.