季铵阳离子 Quaternary ammonium cation
（重定向自Tetraalkylammonium）
季铵阳离子可以看作铵离子的四个氢被烃基取代后形成的阳离子。由季铵阳离子形成的盐称为季铵盐。
Tetraalkylammonium
中文百科
英语百科
Quaternary ammonium cation 季铵阳离子
（重定向自Tetraalkylammonium）
Quaternary ammonium cations, also known as quats, are positively charged polyatomic ions of the structure NR4, R being an alkyl group or an aryl group. Unlike the ammonium ion (NH4) and the primary, secondary, or tertiary ammonium cations, the quaternary ammonium cations are permanently charged, independent of the pH of their solution. Quaternary ammonium salts or quaternary ammonium compounds (called quaternary amines in oilfield parlance) are salts of quaternary ammonium cations.
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