Cyanoaurate - Cyanokinsanene
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A complex in which a gold ion is coordinated with a cyanide ion, there are two compounds, gold(I) and gold(III). The potassium salt is commonly called potassium gold cyanide. [Dicyanoaurate(I)] When gold cyanide(I) AuCN is dissolved in an aqueous cyanide solution, it produces the dicyanaurate(I) ion [Au(CN) 2 ] - . The most commonly known salt is potassium dicyanaurate(I) K [Au(CN) 2 ]. This can also be obtained from the aqueous solutions mentioned above, but a more commonly used method is to add ammonia to a solution of gold(III) chloride to precipitate the hydroxide, which is then dissolved in a potassium cyanide solution to synthesize it. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
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金イオンにシアン化物イオンが配位した錯体で，金(I)および金(III)の2種の化合物がある。カリウム塩は俗に金シアン化カリウムと呼ばれる。 ［ジシアノ金(I)酸塩］ シアン化金(I)AuCNをシアン化物水溶液に溶かすとジシアノ金(I)酸イオン[Au(CN)2]－を生ずる。塩としてはジシアノ金(I)酸カリウムK[Au(CN)2]が最もふつうに知られている。これは上記の水溶液からも得られるが，塩化金(III)の溶液にアンモニアを加えて水酸化物を沈殿させ，これをシアン化カリウム溶液に溶かして合成する方法がよく使われる。 出典 株式会社平凡社世界大百科事典 第２版について 情報 |
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