Английская Википедия:Iron(III) sulfide

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Шаблон:Short description Шаблон:Chembox

Iron(III) sulfide, also known as ferric sulfide or sesquisulfide (Шаблон:Chem), is one of the several binary iron sulfides. It is a solid, black powder that degrades at ambient temperature.[1]

Reactions

Шаблон:Chem precipitates from solutions containing its respective ions:[1]

2Fe3+ + 3S2− → Fe2S3

The resulting solid decays at a temperature over 20 °C into iron(II) sulfide (FeS) and elemental sulfur:[2]

Fe2S3 → 2 FeS + S

With hydrochloric acid it decays according to the following reaction equation:[3]

Fe2S3 + 4 HCl → 2 FeCl2 + 2 H2S + S

Greigite

Greigite, with the chemical formula Шаблон:Chem2, is a mixed valence compound containing both Fe(III) and Fe(II). It is the sulfur equivalent of the iron oxide magnetite (Fe3O4). As established by X-ray crystallography, the S anions form a cubic close-packed lattice, and the Fe cations occupy both tetrahedral and octahedral sites.[4]

References

Шаблон:Reflist

Шаблон:Iron compounds

  1. 1,0 1,1 Шаблон:Greenwood&Earnshaw2nd
  2. Шаблон:Cite book
  3. H. Roempp, Chemie (1997), S. 1099; Шаблон:ISBN
  4. Vaughan, D. J.; Craig, J. R. "Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge: 1978. Шаблон:ISBN.