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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 Roussin's black salt ： ウィキペディア英語版 Roussin's black salt Roussin's black salt is a chemical compound with the formula NaFe4S3(NO)7 first described by Zacharie Roussin. It consists of the sodium salt of the ()− anion and is classified as metal nitrosyl compound. The cluster anion has the geometry of an incomplete cubane with ''C''3v symmetry. The dark colour of the complex is attributed to a number of charge-transfer interactions. ==Synthesis== Roussin’s Black Salt is produced by the reaction of nitrous acid, potassium hydroxide, potassium sulfide, and iron(II) sulfate in aqueous solution. It can also be formed by the conversion of Roussin's Red Salt in mildly acidic conditions. This reaction is reversible and Roussin’s Red Salt is reformed upon alkalization of the reaction solution. 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「Roussin's black salt」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.