Английская Википедия:Iron(III) sulfide
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
- ↑ 1,0 1,1 Шаблон:Greenwood&Earnshaw2nd
- ↑ Шаблон:Cite book
- ↑ H. Roempp, Chemie (1997), S. 1099; Шаблон:ISBN
- ↑ Vaughan, D. J.; Craig, J. R. "Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge: 1978. Шаблон:ISBN.
