Английская Википедия:Chromium(III) sulfide

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Chromium(III) sulfide is the inorganic compound with the formula Cr2S3. It is a brown-black solid. Chromium sulfides are usually nonstoichiometric compounds, with formulas ranging from CrS to Cr0.67S (corresponding to Cr2S3).

Preparation

Chromium(III) sulfide can be prepared through the reaction of a stoichiometric mixture of the elements at 1000 °C[1]

<math>\mathrm{2 \ Cr + 3 \ S \longrightarrow Cr_2S_3}</math>

It is a solid that is insoluble in water. According to X-ray crystallography, its structure is a combination of that of nickel arsenide (1:1 stoichiometry) and Cd(OH)2 (1:2 stoichiometry). Some metal-metal bonding is indicated by the short Cr-Cr distance of 2.78 Å.[2]

See also

References

Шаблон:Reflist

Шаблон:Chromium compounds Шаблон:Sulfides

Шаблон:Inorganic-compound-stub

  1. Georg Brauer: Handbuch der präparativen anorganischen Chemie. 3., umgearb. Auflage. Band III. Enke, Stuttgart 1981, Шаблон:ISBN, S. 1493
  2. Jellinek, F. "The structures of the Chromium Sulphides" Acta Crystallographica 1957, volume 10, p620-p628 Шаблон:Doi