Arenium ion

Ball-and-stick model of the benzenium ion

An arenium ion in organic chemistry is a cyclohexadienyl cation that appears as a reactive intermediate in electrophilic aromatic substitution. For historic reasons this complex is also called a Wheland intermediate or a sigma complex or σ-complex. The smallest arenium ion is benzenium ion C₆H₇, which is protonated benzene.

单词	Arenium ion
释义	Arenium ion 英语百科 Arenium ion An arenium ion in organic chemistry is a cyclohexadienyl cation that appears as a reactive intermediate in electrophilic aromatic substitution. For historic reasons this complex is also called a Wheland intermediate or a sigma complex or σ-complex. The smallest arenium ion is benzenium ion C₆H₇, which is protonated benzene.
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