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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Quaternary compound ： ウィキペディア英語版 Quaternary compound In chemistry, a quaternary compound is a cation consisting of a central positively charged nitrogen atom with four substituents, especially organic (alkyl and aryl) groups, discounting hydrogen atoms. The best known quaternary compounds are quaternary ammonium salts, having a nitrogen atom at the centre. For example, in the following reaction, the nitrogen atom is said to be quaternized as it has gone from 3 to 4 substituents: :$\backslash mathrm$ Other examples include substituted phosphonium salts (R4P+), substituted arsonium salts (R4As+) like arsenobetaine, as well as some arsenic containing superconductors. Substituted stibonium (R4Sb+) and bismuthonium salts (R4Bi+) have also been described. ==See also== * Onium compounds 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Quaternary compound」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.