Difference between revisions of "Onium ion"

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Positively charged higher-valency (higher-coordination) ions of the nonmetallic elements. More common types are the carbonium, oxonium, sulfonium, nitronium, diazonium, phosphonium, and halonium ions. Classical examples are the methonium ion CH<sub>5</sub><sup>+</sup>, the hydrogenonium ion H<sub>3</sub><sup>+</sup> and and the hydronium ion H<sub>3</sub>O<sup>+</sup>. Onium ions are not limited to monopositive ions, and multiply-charged onium ions exist such as H<sub>4</sub>O<sup>2+</sup> and the distonic oxonium dication H<sub>2</sub>O<sup>+</sup>-CH<sub>2</sub>-CH<sub>2</sub>-OH<sub>2</sub><sup>+</sup>. 
rel=[[onium compounds]]
== Related Terms ==
[[ylium Ion]]

Latest revision as of 16:38, 4 April 2014

Onium ion
Related Term(s): onium compounds
This is an unofficial draft definition presented for information and comment.

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