Английская Википедия:Gold(I) cyanide

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Шаблон:Chembox

Gold(I) cyanide is the inorganic compound with the chemical formula AuCN. It is the binary cyanide of gold(I). It is an odourless, tasteless yellow solid.[1] Wet gold(I) cyanide is unstable to light and will become greenish.[1] Gold(I) cyanide itself is only of academic interest, but its derivative dicyanoaurate is an intermediate in gold cyanidation, the extraction of gold from its ores.[2]

Preparation

Solid gold(I) cyanide precipitates upon reaction of potassium dicyanoaurate with hydrochloric acid:

<math>\mathrm{K[Au(CN)_2] + HCl \longrightarrow AuCN + HCN + KCl}</math>

It can also be produced by the reaction of gold(III) chloride and potassium cyanide.[3]

Reactions

The solid dissolves to form water-soluble adducts with a variety of ligands: cyanides, hydroxide, ammonia, thiosulfate and hydrosulfide.[3]

Like most gold compounds, it converts to metallic gold upon heating.Шаблон:Cn

Structure

Gold(I) cyanide's is a coordination polymer consisting of linear chains of AuCN such that each Au(I) center is bonded to carbon and nitrogen. The structure is hexagonal with the lattice parameters a = 3.40 Å and c = 5.09 Å.[3] T[4]

References

  1. 1,0 1,1 Meyers Konversations-Lexikon, 1888: Goldcyanid
  2. Шаблон:Ullmann
  3. 3,0 3,1 3,2 Ошибка цитирования Неверный тег <ref>; для сносок Handbook не указан текст
  4. Шаблон:Cite journal

Шаблон:Gold compounds Шаблон:Cyanides