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Chemistry LibreTexts

Quaternary Ammonium Ion

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A quaternary (4º) ammonium ion is an ammonium ion that has the following general structural formula.

quaternaryammoniumion1.png

R1, R2, R3, and R4 could be alkyl groups, aryl groups, or any combination thereof.

eg:

quaternaryammoniumion2.png

see also quaternary ammonium salt, primary ammonium ion, secondary ammonium ion, tertiary ammonium ion


This page titled Quaternary Ammonium Ion is shared under a All Rights Reserved (used with permission) license and was authored, remixed, and/or curated by Gamini Gunawardena via source content that was edited to the style and standards of the LibreTexts platform.

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